СПОСОБ И СИСТЕМА МОДУЛЬНОГО СОХРАНЕНИЯ ЭНЕРГИИ

Изобретение относится к области электротехники и направлено на продукт для сохранения энергии в форме системы узла батареи, которая может модульно использоваться на объекте сохранения энергии. Подсистема управления, выполненная с возможностью управления передачей энергии, включающая в себя: источник питания AC/DC; источник бесперебойного питания; процессор; переключатель Ethernet; первый интерфейс передачи данных, выполненный с возможностью передачи и/или приема данных из подсистемы сохранения, который отслеживает одну или больше батарей; первый интерфейс передачи, выполненный с возможностью передачи энергии в подсистему сохранения; второй интерфейс передачи данных, выполненный с возможностью передачи и/или приема данных из подсистемы питания, которая включает в себя преобразователь энергии, и подсистема питания выполнена с возможностью соединения с линией электропередач; и второй интерфейс передачи, выполненный с возможностью передачи энергии в подсистему электропередач, в которой процессор ...

РЕАГИРУЮЩЕЕ НА ЧАСТОТУ УПРАВЛЕНИЕ ПОДДЕРЖАНИЕМ ЗАРЯДА СИСТЕМ НАКОПЛЕНИЯ ЭЛЕКТРИЧЕСТВА ДЛЯ ВСПОМОГАТЕЛЬНЫХ УСЛУГ В ЭЛЕКТРОЭНЕРГЕТИЧЕСКОЙ СЕТИ

Использование: в области электроэнергетики. Технический результат - повышение надежности. Предложены системы, устройства и способы для поддержания состояния заряда устройства накопления энергии, таких как аккумуляторные батареи, маховики, конденсаторы или другие технологии, которые энергетически связаны с электросетью, для обеспечения вспомогательных услуг. Чтобы надежно реагировать на запросы регулировать сеть, заряд в устройстве накопления энергии поддерживается или восстанавливается до заданного диапазона некоторым образом, который оптимизирует готовность устройства накопления энергии обеспечивать вспомогательные услуги в свете состояния сети. Состояние заряда (SOC) устройства накопления энергии и частота сети могут контролироваться. Когда запрос от оператора регулировать частоту сети не обслуживается, заряд устройства накопления энергии может увеличиваться или уменьшаться, так что заряд может поддерживаться в пределах определенного диапазона. Как только SOC попадает вне первого диапазона ...

СИСТЕМА АККУМУЛИРОВАНИЯ ЭЛЕКТРОЭНЕРГИИ, КОТОРАЯ МАКСИМИЗИРУЕТ ИСПОЛЬЗОВАНИЕ ВОЗОБНОВЛЯЕМОЙ ЭНЕРГИИ

Изобретение относится к системам аккумулирования электроэнергии, пригодным для использования в обычных домах и офисах. Система аккумулирования электроэнергии, описываемая в этой заявке, может быть просто установлена в доме или офисе и может быть интегрирована с панелями солнечных батарей, ветротурбинами или другими возобновляемыми источниками энергии. Система аккумулирования электроэнергии содержит множество аккумуляторных модулей, электрически соединенных параллельно, причем каждое множество аккумуляторных модулей имеет преобразователь, электрически соединенный с ним для образования комбинации множества аккумуляторных модулей и преобразователя, при этом преобразователь имеет выход переменного тока, соединенный с одним или более устройствами, потребляющими электроэнергию, и вход переменного тока, соединенный с электрической сетью. Технический результат - экономия электроэнергии. 3 н. и 11 з.п. ф-лы, 10 ил., 3 табл.

УСТРОЙСТВО И СПОСОБ УПРАВЛЕНИЯ ДЛЯ ПЕРЕДАЧИ ЭЛЕКТРОЭНЕРГИИ

Использование: в области электротехники. Технический результат - повышение эффективности передачи электроэнергии. Устройство содержит: преобразователь (118), имеющий сторону переменного тока и сторону постоянного тока, переключатель (112), выполненный с возможностью подключения к линии (104) передачи на первой стороне и выполненный с возможностью подключения нагрузки (122) на второй стороне, причем вторая сторона также подключается к стороне переменного тока преобразователя, устройство (120) накопления энергии, подключенное к стороне постоянного тока преобразователя. В первом режиме работы переключатель замкнут таким образом, чтобы ток накопления энергии протекал к или от устройства накопления энергии для его заряда или разряда, соответственно, используя преобразователь для любых необходимых преобразований между переменным током и постоянным током. Во втором режиме работы переключатель разомкнут, предотвращая протекание тока от линии передачи к преобразователю, а устройство накопления энергии ...

СТАБИЛИЗАТОР НАПРЯЖЕНИЯ ДЛЯ СИСТЕМЫ ПИТАНИЯ

Изобретение относится к системам питания для использования в электрифицированном железнодорожном транспорте. Стабилизатор напряжения для системы питания, который стабилизирует нагрузку активной мощности, содержит первый AC-DC и DC-AC преобразователь для осуществления преобразования между мощностью переменного тока и мощностью постоянного тока; и никель-металлогидридную батарею, расположенную между и соединенную с кабелем высокого напряжения на стороне постоянного тока первого AC-DC и DC-AC преобразователя и кабелем низкого напряжения на стороне постоянного тока первого AC-DC и DC-AC преобразователя. Технический результат - снижение массогабаритных параметров устройства. 9 з.п. ф-лы, 12 ил.

УСТРОЙСТВО И СПОСОБ УПРАВЛЕНИЯ ИСТОЧНИКОМ ЭЛЕКТРОПИТАНИЯ ДЛЯ ПОДКЛЮЧАЕМОЙ К ЛИНИИ СИСТЕМЫ ТОПЛИВНОГО ЭЛЕМЕНТА

Настоящее изобретение раскрывает источник и способ электропитания для подключаемой к линии системы топливного элемента. Источник электропитания для подключаемой к линии системы топливного элемента включает в себя: запоминающий модуль для запоминания нормальной области и области предупреждения соответственно рабочим условиям и зависимости между выходным напряжением и выходным током топливного элемента; модуль детектирования для детектирования тока коллективного питания; и модуль управления для нахождения рабочей точки топливного элемента и выдачи управляющего сигнала для изменения выходного тока топливного элемента на основе положения найденной рабочей точки и детектирования или недетектирования тока коллективного питания. Технический результат - увеличение эффективности и стабильности работы топливного элемента. 2 н. и 18 з.п. ф-лы, 4 ил.

Система накопления и распределения энергии и способ ее эксплуатации

Изобретение относится к области электротехники, в частности к системам накопления и распределения энергии. Технический результат заключается в повышении стабильности работы системы. Достигается тем, что блок управления преобразователем имеет входы измерения мгновенных значений напряжения источника питания и нагрузки, тока нагрузки, тока звена переменного тока преобразователя, входы измерения тока и напряжения звена постоянного тока преобразователя, блок управления преобразователем выполнен с возможностью сохранять алгоритмы работы системы и объединен с двунаправленным преобразователем. К блоку управления преобразователем может быть функционально подключен электронный ключ и цепь измерения напряжения сети. Подсистема накопления может быть выполнена на суперконденсаторах или по комбинированной схеме. 2 н. и 3 з.п. ф-лы, 5 ил.

ВОЗБУДИТЕЛЬ БЛОКА ГЕНЕРИРОВАНИЯ МОЩНОСТИ, БЛОК ГЕНЕРИРОВАНИЯ МОЩНОСТИ И ОБОРУДОВАНИЕ ВЫВОДА ЭНЕРГИИ В ЭЛЕКТРИЧЕСКОЙ СЕТИ

... 1. Возбудитель блока генерирования мощности в электрической сети, отличающийся тем, что содержит:контроллер возбуждения для генерирования сигнала возбуждения согласно первому управляющему сигналу и второму управляющему сигналу, полученному таким образом;преобразователь для преобразования входной энергии из первого напряжения во второе напряжение согласно упомянутому сигналу возбуждения, и вывода его к электродвигателю, соединенному с упомянутым возбудителем блока генерирования мощности;в котором упомянутый первый управляющий сигнал является сигналом об информации текущего состояния упомянутого электродвигателя, и упомянутый второй управляющий сигнал включает в себя частоту электрической сети и/или амплитуду напряжения упомянутой электрической сети.2. Возбудитель блока генерирования мощности по п. 1, отличающийся тем, что информация текущего состояния упомянутого электродвигателя включает в себя одно или любую комбинацию из следующего: напряжение якоря электродвигателя, ток якоря электродвигателя ...

УСТРОЙСТВО АККУМУЛИРОВАНИЯ ЭНЕРГИИ И ПОТРЕБИТЕЛИ ПЕРЕМЕННОЙ НАГРУЗКИ

... 1. Устройство (8) аккумулирования энергии для электрической нагрузки (4), обменивающейся электрической мощностью с сетью (2) энергоснабжения,- с по меньшей мере двумя выводами (6а, b), служащими для параллельного подключения к нагрузке (4) и сети (2) энергоснабжения,- с подключенным между выводами (6а, b), сохраняющим напряжение, содержащим накопитель (12) энергии инвертором (10),- причем накопитель (12) энергии выполнен с возможностью накопления количества энергии (E+E+E), которое многократно превышает количество энергии, необходимое для регулярного режима работы инвертора (10),- причем накопитель (12) энергии содержит различные частичные накопители (14а-с) с различающимися друг от друга скоростями (V) заряда и накопительными емкостями для различных количеств энергии (Е),- причем накопитель (12) энергии включает в себя обычный накопительный конденсатор (16) и фоновый накопитель (18) в качестве частичных накопителей (14а-с), причем накопительный конденсатор (16) выполнен с возможностью ...

СИСТЕМА И СПОСОБ ПРЕОБРАЗОВАНИЯ ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ ДЛЯ ВОЗОБНОВЛЯЕМЫХ ИСТОЧНИКОВ ЭНЕРГИИ

... 1. Система преобразования электрической энергии, включающая:первый преобразователь электрической энергии, имеющий вход и выход, при этом первый преобразователь электрической энергии сконфигурирован для приема электрической энергии в первой форме на упомянутом входе и для обеспечения напряжения постоянного тока заранее заданной величины на упомянутом выходе;второй преобразователь электрической энергии, имеющий вход и выход, при этом второй преобразователь электрической энергии сконфигурирован для приема упомянутого напряжения постоянного тока заранее заданной величины на упомянутом входе и для обеспечения напряжения переменного тока на упомянутом выходе;шину постоянного тока, включенную между выходом первого преобразователя электрической энергии и входом второго преобразователя электрической энергии, при этом шина постоянного тока сконфигурирована для передачи напряжения постоянного тока заранее заданной величины; иустройство для накопления энергии, функционально соединенное с упомянутой ...

СПОСОБ И УСТРОЙСТВО ДЛЯ КОНТРОЛЯ ТОЧКИ ПОДВОДА ЭНЕРГИИ В СЕТИ ЭНЕРГОСБЕРЕЖЕНИЯ

... 1. Способ контроля точки (ESP) подвода энергии в сети энергоснабжения, в частности в области низкого напряжения, при этом несколько первых и вторых узлов (К11, К12, К13, К2) подключены или установлены с возможностью подключения к указанной точке подвода энергии, причем соответствующий узел (К11, К12, К13, К2) представляет собой производителя энергии, потребителя энергии или производящего потребителя, включающий этапы, на которых:a) регистрируют фактический ток, представляющий потребление или отдачу тока в точке (ESP) подвода энергии, с помощью устройства измерения и контроля;b) обрабатывают токовую информацию (SI), которая получена от одного из указанных первых узлов (К11, К12, К13) и представляет запланированное и/или максимально возможное потребление тока или отдачу тока указанным первым узлом, при этом проверяют, выполняется ли для величины тока в токовой информации (SI) заданный критерий в отношении допустимой величины (MW) тока в точке (ESP) подвода энергии;c) определяют допустимую ...

УПРАВЛЕНИЕ ЕМКОСТЬЮ АККУМУЛЯТОРНОЙ БАТАРЕИ

... 1. Способ обеспечения избирательной модуляции в электрической сети от резервной системы аккумуляторных батарей для установки, которая подключается к электрической сети, причем резервная система аккумуляторных батарей включает в себя одну или более аккумуляторных батарей, преобразователь для преобразования переменного тока (AC) в постоянный ток (DC) для зарядки аккумуляторных батарей от электрической сети и инвертор для преобразования DC-AC для питания нагрузки в установке и избирательного питания электрической сети, причем AC выход инвертора избирательно подключается к электрической сети и модулируется для обеспечения регулирования электрической сети, и по меньшей мере некоторые из аккумуляторных батарей назначаются для использования в качестве как резервного источника питания для упомянутой установки, так и для регулирования электрической сети, причем первая часть емкости таких аккумуляторных батарей назначается для использования в качестве резервного источника питания, а вторая часть ...

Hybrid power plant for improved efficiency and dynamic performance

Power supply system for radio base station

ENERGY MAINTENANCE DEVICE AND ITS ASSOCIATED METHOD

Autonomous distributed AC power system.

Autonomous distributed AC power system.

HYBRID POWER PLANT FOR IMPROVED EFFICIENCY AND DYNAMIC PERFORMANCE

ENERGY MAINTENANCE DEVICE AND ITS ASSOCIATED METHOD

ENERGY MAINTENANCE DEVICE AND ITS ASSOCIATED METHOD

Power supply system for radio base station

Autonomous distributed AC power system.

Hybrid power plant for improved efficiency and dynamic performance

Hybrid power plant for improved efficiency and dynamic performance

Autonomous distributed AC power system.

TAX PROCEDURE OF A SODIUM AND SULFIDE BATTERY

LIGHTING INSTALLATION WITH HIGH EFFICIENCY

ELECTRIC VEHICLE AS PEAK LOAD TENDER UNIT

ISLAND NET AND PROCEDURE FOR THE ENTERPRISE OF AN ISLAND NET

SPEISEEINRICHTUNG FÜR EIN WECHSELSTROMNETZ

Speiseeinrichtung (1) für ein, ein Batteriesystem (8) aufweisendes Wechselstromnetz (2), mit einem Wechselstromgenerator (4), zu dessen Antrieb ein im Bedarfsfall einschaltbarer Verbrennungsmotor (11) vorgesehen ist, um die Abgabe von Wechselstrom an das Netz (2) zu veranlassen, wobei in der Antriebskette (3) zum Wechselstromgenerator (4) weiters eine Elektromaschine (7,7') angeordnet ist, die direkt oder über einen Wechselrichter (14) mit dem Batteriesystem (8) und/oder einer Photovoltaikanlage (9) verbunden ist.

ELEKTRISCHER ENERGIESPEICHER UND VERFAHREN ZUM REGELN EINES SOLCHEN ENERGIESPEICHERS

In installations for generation of alternative energy, it is necessary because of the fluctuating availability of the alternating energy source to provide electrical energy stores which can temporarily store excess energy or can compensate for energy bottlenecks. The present invention relates to an electrical energy store such as this having a bidirectional DC/DC converter (DC) with a low-voltage side and a high-voltage side, which energy store can be connected via the high-voltage side to a DC bus (6) and has switching hysteresis (SH) with a charging and/or discharge curve, with the power consumption and/or the power output being dependent on the voltage on the high-voltage side.

Energiespeichersystem

Ein Energiespeichersystem fOr erneuerbare Energiequellen (1) ist zur Versorgung zumindest eines Verbrauchers (2) mit elektrischer Energie mit zumindest einem Anschluss fOr die erneuerbare Energiequelle (1), zumindest einem Netzanschluss (4) an ein externes Stromnetz (5) und zumindest einem elektrischen Energiespeicher (6) ausgestattet. Der elektrische Energiespeicher (6) ist Ober einen bidirektlonalen Isolierten DCIOC Konverter (8) und ein bldlrektlonales Lade/Entlademodul (9) in das System integriert. Die Aktlvierung bzw.Deaktivierung des vorzugsweise ungeregelten DC/DC· Konverters (8) und/oder die Umschaltung der BetriebsmodiLaden bzw. Entladen des Lade/Entlademoduls (9) erfolgt über eine elektronische Steuerung (10). Dabei wird bei Erreichen und/oder Oberschreiten einer definierten Leistung durch die Energiequelle (1) der Energiespeicher (6) Ober den DC-Ausgang der Energiequelle (1) aufgeladen.

Energiespeichersystem

Der Erfindung liegt daher die Aufgabe zu Grunde, ein Energiespeichersystem zu entwickeln, welches auf Fahrradakkus basiert und den Anschluss und die Entnahme dieser Fahrradakkus während des Betriebs des Energiespeichersystems gestattet. Erreicht wird dies bei einem derartigen Energiespeichersystem, bestehend aus mehreren Batteriezellen, dadurch, dass die Batteriezellen zu mehreren Fahrradakkus (3) zusammengefasst sind, welche in ein Gehäuse (1) mit passend geformten Aufnahmeschächten (2) eingeführt sind, wodurch über Kontakte ( 4) eine elektrische Verbindung zur Gleichstromseite (6) einer integrierten bidirektionalen Wechselrichter- und Ladegeräteinheit (5) hergestellt wird. Derartige Energiespeichersysteme werden an die Elektroinstallation von Gebäuden oder technischen Einrichtungen für stationäre Anwendungen angeschlossen und werden zur Speicherung von Energie eingesetzt.

PROCEDURE AND SWITCHING CONFIGURATION FOR THE COVERING OF ENERGY PEAK DEMAND WITH ELECTRICAL ALTERNATING CURRENT AND/OR THREE-PHASE CURRENT SUPPLY

MODULAR ACHIEVEMENT CONTROL SYSTEM AND - PROCEDURES

Power management device, power management method, and program

The present invention provides a power management device (10) that comprises: an acquisition unit (11) that acquires from a power generation vendor a power purchase request that includes a power unit price; a calculation unit (14) that calculates a power consignment fee unit price for each pair of the power generation vendor and a group from among a plurality of power consumer groups each composed of a plurality of power consumers within the purview of the same power substation; and a determination unit (12) that determines whether to purchase power from the power generation vendor for each power consumer on the basis of a total unit price, which is the total of the power unit price and the power consignment fee unit price, and a reference unit price of each power consumer.

Control device and control method for direct-current micro-grid, and direct current micro-grid system

Provided are a control device and control method for a direct-current micro-grid, and a direct-current micro-grid system. The control device for a direct-current micro-grid comprises: a detection module (100) for detecting a voltage change ratio on a direct-current bus; and a regulation module (200) for regulating energy compensation of an energy compensation apparatus for the direct-current bus according to the voltage change ratio, detected by the detection module, on a direct-current bus. The control device for the direct-current micro-grid detects, by means of a detection module, a voltage change on a direct-current bus in real time, and a control module regulates, according to a detection result of the detection module, energy compensation of an energy compensation apparatus for the direct-current bus in real time, thereby improving the stability of the voltage on the direct-current bus, and thus making the direct-current micro-grid operate stably.

Power conversion system, conversion circuit control method and program

The present disclosure addresses the problem of performing accurate output suppression control in a conversion circuit (100) in regard to the occurrence of various types of output suppression factors. This conversion circuit (100) includes an inverter (13). The conversion circuit (100) carries out power conversion, at least at the inverter (13), of direct-current power output from a direct-current power supply (solar cell (2) and power storage unit (3)), and outputs the converted power as alternating-current power to a load (5) or a power system (4). A control circuit (101), upon obtaining information indicating that two or more output suppression factors have occurred, causes the conversion circuit (100) to undergo output suppression at the maximum suppression amount among two or more suppression amounts that are based on the content of the two or more output suppression factors.

Uninterruptable power supply device

Provided is an uninterruptable power supply device capable of responding to a variety of system abnormalities other than frequency fluctuation and voltage drop including instantaneous voltage drop. An uninterruptable power supply device 100, which is provided between a commercial power system 10 and an essential service 30 and which provides AC power to the essential service 30, wherein the uninterruptable power supply device 100 is provided with: a power supply unit 2, which has a power converter 22 and a storage battery 21 and which is connected to a power line L1 for supplying power from the commercial power system 10 to the essential service 30; an open switch 3 for opening the power supply line L1, the open switch 3 being provided on the power line L1 on the commercial power system side of the power supply unit 2; a system abnormality detection unit 5 for detecting a system abnormality, which is at least one of voltage rise, phase fluctuation, voltage imbalance, harmonic abnormality ...

Power management method

Power management method The invention relates to a power management method comprising the following steps: - measuring voltages and currents of a power source (20), an electrical output (23) and a battery (21); - calculating a power generated by the power source (20), a power consumed by the electrical output (23) and a power exchanged with the battery (21); - connecting the power source (20), the electrical output (23), the battery (21) and an electrical grid (22); - transmitting, to a monitoring device, measurements of electrical generation and information on the consumption and control possibility of one or more remote systems to change priorities of power flow or to change options regarding the use of the power flow; - connecting the electrical output (23) to the power source (20), the battery (21) or the electrical grid (22) according to information on the tariff per kWh provided by the public electricity grid, such as peak and off-peak time. (Figure 1) 20 ICr -~rPFTR".Iao, C= WIArtcr ...

Distributed energy resource management system

A power distribution and control system for use with a bulk generation system having transmission and distribution systems, the power distribution and control system including a plurality of microgrids each including a power generation element and a load, a plurality of microgrid controllers each associated with one and only one of the plurality of microgrids, and a first communication network. A high-level controller is operable using the first communication network to communicate with the bulk generation system and each of the plurality of microgrid controllers, the high-level controller operable to coordinate the operation of the microgrids during normal system operation. A second communication network is separate from the first communication network, the second communication network providing peer to peer communication between each of the plurality of microgrid controllers when at least one of the high-level controller and the first communication network is not available, and a plurality ...

Apparatus and method of aggregating and supplying energy

An apparatus and method for aggregating and supplying energy includes a plurality of power modules for inverting a first type of electrical power, which is supplied to the power modules from multiple sources of power, to a second type of electrical power at an output of the power modules for delivery of the inverted power to a storage device for future use, or to an electrical load, or to a regional or central utility grid. A power microcontroller is carried by and incorporated within each of the power modules and each is configured fo controlling the power inversion operations. The power microcontrollers are configured for generating, from each of the plurality of power modules, controlled pulses of charge and discharge for increasing storage capacity of the energy storage device. A control microcontroller is configured for monitoring voltage levels within the at least one energy storage device and for rebalancing voltage within the energy storage device.

Systems, apparatus, and methods for load sharing between isochronous generators and battery energy storage systems in islanded microgrids

SYSTEMS, APPARATUS, AND METHODS FOR LOAD SHARING BETWEEN ISOCHRONOUS GENERATORS AND BATTERY ENERGY STORAGE SYSTEMS IN ISLANDED MICROGRIDS Embodiments provide for controlling power production in an islanded microgrid system while maintaining the system frequency and implementing desired load sharing between different types of generating resources and energy storage systems. Embodiments include a controller in communication with the resources to control operation of the resources and operative to determine an optimal load balance based on load and renewable generation forecast information; transmit load and generation schedules to a generation controller that operates the resources in accordance with the schedules; calculate a frequency set point for energy storage resources in the microgrid based on the optimal load balance of the energy storage resources, droop settings, rated power, and the frequency of the energy storage resources; and to control the frequency set point of the energy ...

Power grid photo-voltaic integration using distributed energy storage and management

Abstract Distributed energy storage within the distribution network of an electric power network at least partially supplied by time varying and unpredictable generation sources provides smoothing of energy flow within the distribution 5 network. The distribution energy storage may include a plurality of distributed energy storage units operating under the control of a single controller or regional controllers. The distributed energy storage units may operate as groups of units or as separate units. 3203446v1 ...

Fast acting distributed power system for trasmission and distribution system load using energy storage units

Methods and apparatus for coupling an energy storage system to a variable energy supply system

METHODS AND APPARATUS FOR COUPLING AN ENERGY STORAGE SYSTEM TO A VARIABLE ENERGY SUPPLY SYSTEM A method for coupling an energy storage system to a variable energy supply system 5 includes providing an energy storage system including at least one Vanadium redox battery and at least one battery charge controller ( 104). The method also includes electrically coupling the at least one battery charge controller to the variable energy supply system such that the at least one battery is configured to supply a substantially consistent energy output during fluctuating energy loads of the energy supply system. 2 -0 1F8F12 ...

Centralized power conditioning

A power plant for providing electric power to a power grid includes energy sources; power conditioning units and a controller configured to cause power provided to the grid to have selected electrical characteristics. The controller is in high speed real-time communication with the power conditioning units and programmed to provide instructions to the power conditioning units.

Centralized power conditioning

A power plant for providing electric power to a power grid includes energy sources; power conditioning units and a controller configured to cause power provided to the grid to have selected electrical characteristics. The controller is in high speed real-time communication with the power conditioning units and programmed to provide instructions to the power conditioning units.

Bidirectional DC converter

The invention relates to a DC converter for a first DC source (1.1) and a second DC source (1.2). An output capacitor (2.9) is connected to the positive contact of the first DC source (1.1) and the positive DC output (3.1) and to the negative contact of the second DC source (1.2) having the negative DC output (3.2). The DC converter comprises a first and a second storage inductor (2.4, 2.5), wherein the first storage inductor (2.4) is arranged between a positive connection of the second DC source (1.2) and a first contact of a first electronic switch (2.72), and wherein the second storage inductor (2.5) is arranged between a negative connection of the first DC source (1.1) and a second contact of the first electronic switch (2.72). A buffer capacitor (2.20) is arranged between the negative connection of the first DC source (1.1) and the positive connection of the second DC source (1.2). A second electronic switch (2.62) is arranged between the first contact of the first electronic switch ...

Modular power management system and method

SYSTEM AND METHOD OF FORMING CAPACITOR-BASED ELECTRICAL ENERGY STORAGE MODULES

Photovoltaic power generation system, wind power generation system and control methods thereof

It is provided a photovoltaic power generation system and a control method thereof according to the present disclosure. The photovoltaic power generation system includes a photovoltaic power generation system, a photovoltaic inverter, a bidirectional DC/DC converter, a storage battery and a control device. The photovoltaic inverter performs MPPT control on the photovoltaic power generation device, so that the generation power of the photovoltaic power generation device is maximized. In a case that the generation power of the photovoltaic power generation device is greater than the limited generation power of the power grid, the bidirectional DC/DC converter is controlled to run in the forward direction to charge the storage battery, so that the output power of the photovoltaic inverter is smaller than or equal to the limited generation power of the power grid. Therefore, the generation power of the photovoltaic power generation system does not need to be limited, which ensures that the ...

System and method of smart energy storage in a UPS

A method for controlling an uninterruptible power supply (UPS) having a battery includes powering a load coupled to the UPS using utility power, determining whether an energy cost associated with the utility power exceeds a threshold cost, determining whether a charge level of the battery exceeds a threshold charge level, and powering the load from the battery in response to determining that the energy cost exceeds the threshold cost and that the charge level of the battery exceeds the threshold charge level.

Power management method

The invention relates to a power management method, characterised in that it includes the following steps: a) measuring the voltage and current of a power source (20), of an electrical output (23) and of a battery (21); b) calculating the power produced by the power source (20), the power drawn by the electrical output (23) and the power exchanged with the battery (21); c) connecting the power source (20), the electrical output (23), the battery (21) and an electrical grid (22); and d) transmitting to a monitoring device electricity generation measurements and consumption information and information on whether it is possible to remotely control a number of systems. In a step e), the electrical output (23) is connected to the power source (20), the battery (21) or to the electrical grid (22) depending on information on the mains-grid kWh unit rate, such as whether it is peak or off-peak.

Energy systems, energy devices, energy utilization methods, and energy transfer methods

Audit method and system and supply method and system for PV power injection and consumption in a power grid system

A method of supplying power in a power grid, a system supplying power in a power grid, a method of consolidating power injection and consumption in a power grid, a system for consolidating power injection and consumption in a power grid, a metering system for a power grid, and a metering method for a power grid. The method of supplying power in a power grid, the method comprises determining an initial forward probabilistic power supply time profile of an aggregate intermittent power source connected to the power grid,; determining a target power demand time profile of at least one load connected to the power grid; and associating at least respective portions of the initial forward probabilistic power supply time profile and the target demand time profile such that a probability of supply of power from the intermittent power source to the load meets a specified criterion.

Control of multiple battery groups

A power conversion and control system includes a power battery group and an energy battery group. The energy battery group is connected to a DC converter, the DC converter output being connected to a bus, and the power battery group is connected directly to the bus, so that operatively the voltage of the bus is variable. The bus may be connected to an inverter for output to a load, via a transformer. A difference in response time is provided between the inverter and the DC converter. The bus may be connected to the grid via a grid rectifier, and to the load via a load inverter. In an alternative, a power conversion and control system, includes a battery group, connected to the input of a load inverter, and to the input of a grid rectifier, wherein the system is adapted to provide frequency regulation power to the grid, to supply load power to a load via the load rectifier, and to provide charging power to maintain the state of charge of the battery, wherein signals indicative of the load ...

Power management systems with dynamic target state of charge

A power management system includes an energy storage device and a control system coupled to the energy storage device. The control system is configured to execute a control routine to determine whether to charge or discharge the energy storage device using a target state of charge and a current state of charge of the energy storage device. The control system is configured to determine that an output signal, received from a power generator, is outside of a specified range. The control system is configured to modify the target state of charge of the energy storage device in response to determining that the output signal is outside of the specified range.

System and method for control of multiphase power converters

SYSTEM AND METHOD FOR CONTROL OF MULTIPHASE POWER CONVERTERS A control system for controlling a multiphase power converter includes a current control module, a voltage control module and a current command selector. The current control module generates grid voltage command signals for the multiphase power converter and the voltage control module generates reference converter current command signals for the current control module. The current command selector supplies active and reactive current command signals from a supervisory controller to the current control module when the multiphase power converter is connected to the grid and supplies the reference converter current command signals to the current control module when the multiphase power converter is unconnected to the grid. w (> 0 -o LL .0I =)IL -W LL~ -0it LL fLu .0 w (abc) -(ct-P) (abc) -(cc-3) z w : .0 0 11 LI LI I cv (ct-J) -(d-q) (aI)-(d-q) .0 LLu. z 0I M a z 0 u CURRENT COMMAND to AE E 00 0 0 >- X PPL >.- wD el. a (L z 000CD ...

Electrical energy storage system with constant state-of-charge frequency response optimization

A frequency response optimization system includes a battery configured to store and discharge electric power, a power inverter configured to control an amount of the electric power stored or discharged from the battery, and a frequency response controller. The frequency response controller includes receiving a regulation signal from an incentive provider, determining statistics of the regulation signal, using the statistics of the regulation signal to generate a frequency response midpoint, and using the frequency response midpoint to determine optimal battery power setpoints for the power inverter. The power inverter is configured to use the optimal battery power setpoints to control the amount of the electric power stored or discharged from the battery.

Behind-the-meter system and method for controlled distribution of solar energy in multi-unit buildings

A behind-the-meter system for controlled distribution of solar power to units in a multi-unit building connected to an electric power grid, the system comprising: a grid-tied inverter connectable between a solar power generator and the electric power grid; sensors configured to measure instantaneously: power demand and solar power consumption of the units; and solar power generation; switches configured to selectively connect and disconnect the units from the solar power generator; and at least one controller, connected to the sensors and the switches, configured to: determine relative values of power demand and solar power consumption of the units based on the instantaneous measurements of the power demand and the solar power consumption of the units; and selectively and individually control the switches to distribute solar power from the solar power generator between the units based on the relative values of the power demand and the solar power consumption of the units.

Hybrid energy system and method

A hybrid energy system includes a (GTG) configured to provide a full-load power 5 output and a storage device configured to store energy. The hybrid energy system includes a generator step-up transformer, wherein the GTG and the storage device are electrically co-located on a low side of the generator step-up transformer.

A unified power flow controller utilizing energy saving devices at a point of power consumption

A system and method are provided for regulating voltage received from an electric utility grid. A unified power flow controller is provided at a point of power consumption and includes a terminal electrically coupled to a power source, which receives a grid alternating current and a grid alternating voltage from the electric utility grid. A power converter is electrically coupled to the terminal and includes an active rectifier that converts substantially all of the grid alternating current to a direct current and an inverter that converts the direct current to a load alternating current and a load alternating voltage, the load alternating voltage being less than the grid alternating voltage. A transformer is provided having first terminals electrically coupled to the power source and second terminals electrically coupled to an output of the inverter. The transformer injects the load alternating voltage in series with the grid alternating voltage.

METHOD FOR RETROFITTING WIND TURBINE FARMS

ENERGY STORAGE SYSTEMS AND ASSOCIATED METHODS

A method for responding to a change in electric power demand includes (1) charging an energy storage subsystem from an electric power grid, (2) discharging the energy storage subsystem into the electric power grid at a discharge rate that is less than a maximum rate of discharge of the energy storage subsystem, and (3) adjusting the discharge rate in response to a signal selected from the group consisting of a signal to provide a regulation up service and a signal to provide a regulation down service. An energy storage system includes an energy storage subsystem for storing electric power, an interface for interfacing the energy storage subsystem with an electric power grid, and a controller configured to control operation of the interface in response to a signal to provide a regulation up service and a signal to provide a regulation down service.

POWER SUPPLY SYSTEM

In a power supply system (10) having a cogeneration unit (12) equipped with an internal combustion engine (12a) and a generator (12b) to generate power to be supplied to a power destination and hot water to be supplied to a hot water destination, there are provided with a natural energy generation unit (14) that generates power with natural energy, a power supply unit (20) that receives the power generated by the generator and natural energy generation unit to supply the received power to the power destination; a voltage detector (22a) that detects voltage (VI) of the power flowing through an connecting bus (22), and an electric heater (121). The power supply unit (20) controls operation of the electric heater based on the detected connecting bus power voltage (V 1), thereby effectively utilizing surplus electricity without transmitting back it to a commercial power source. [FIG. 1 ] ...

OUTPUT-POWER CONTROL APPARATUS

An output power control apparatus included in a power system, in which a secondary battery system (2) and a power generator (3) are connected in parallel with each other, controls the output power of this power system. The output power control apparatus detects the output power of the power generator (3) and controls the output voltage of the secondary battery system (2), based on a value obtained by subtracting the detected output power of the power generator (3) from an output power command for controlling the output power.

MOVING AND STORING ENERGY BETWEEN UTILITY'S ENERGY DELIVERY NETWORKS

A first energy converter that can consume a first physical energy form of a first energy delivery network can be controlled to produce a second physical energy form of a second energy delivery network and inject the second physical energy form into the second energy delivery network. A second energy converter that can consume the second physical energy form of the second energy delivery system can be controlled to produce the first physical energy form of the first energy delivery network and inject the first physical energy form into the first energy deliver network. The controlling of the first energy converter and the controlling of the second energy converter can be coordinated. Related apparatus, systems, techniques and articles are also described.

METHOD FOR CONTROLLING POWER FLOW BETWEEN AN ELECTROCHEMICAL CELL AND A POWER GRID

A METHOD FOR CONTROLLING POWER FLOW BETWEEN AN ELECTROCHEMICAL CELL AND A POWER GRID A method for controlling a force-commutated inverter coupled between an electrochemical cell and a power grid for adjusting the magnitude and direction of the electrical energy flowing therebetween. Both the real power component and the reactive power component of AC electrical energy flow can be independently varied through the switching waveform presented to the intermediately coupled inverter. A var error signal is derived from a comparison of a var command signal with a signal proportional to the actual reactive power circulating between the inverter and the power grid. This signal is presented to a voltage controller which essentially varies only the effective magnitude of the fundamental voltage waveform out of the inverter, thereby leaving the real power component substantially unaffected. In a similar manner, a power error signal is derived by a comparison of a power command signal with a signal ...

DUAL SPEED CONTROL CIRCUIT FOR POWER FLOW THROUGH AN INVERTER

DUAL SPEED CONTROL CIRCUIT FOR POWER FLOW THROUGH AN INVERTER A control circuit for a force-commutated inverter connected intermediate a regenerative DC power source and a power grid, the power source/inverter combination operative to supply AC electrical-energy to, or receive AC electrical energy from or adjust the power factor of, the AC electrical energy of the power grid. The control circuit of the present invention varies the real power component and the reactive power component of the electrical energy flowing between the electrochemical cell and the power grid through the use of two feedback loops with separate time constants. The first feedback loop allows for the independent control of the magnitude and direction of both the real power component and the reactive power component of the AC electrical energy flowing to or from the power grid. The first feedback loop also has a relatively slow time constant so that the power flow between the DC source and the power grid is substantially ...

METHOD AND CONTROL DEVICE FOR OPERATING A BATTERY SYSTEM AND BATTERY SYSTEM

SYSTEMS FOR MACHINE LEARNING, OPTIMISING AND MANAGING LOCAL MULTI-ASSET FLEXIBILITY OF DISTRIBUTED ENERGY STORAGE RESOURCES

Systems, devices and methods for optimising and managing distributed energy storage and flexibility resources on a localised and group aggregation basis, particularly around the determination, analysis and predictive learning of local data patterns, scoring availability for flexibility and risk profiles, to inform the optimisation of energy supply and behind the meter storage resources and local clusters of co-located or close resources within a community, low voltage network, feeder, neighbourhood or building. Said optimisation to involve scheduled, reactive and active management of data sources and local clusters of resources, for a range of goals such as price, energy supply, renewable leverage, asset value, constraint or risk management. Or where said optimisation achieves a local objective such as providing resources to off-set, aid local balancing or constraint management of larger local supplies and loads, or to aid active management of local energy demands and renewable supplies ...

HIGH EFFICIENCY ELECTRIC POWER GENERATION AND CHARGING SYSTEM

Disclosed is a virtually renewable electric power-generating system configured to provide an efficient means for generating electricity for charging an electrical energy storage source such as batteries using the same energy storage source to power an electro-mechanical system for generating electricity. Part of the output of the electro-mechanical system for generating electricity is fed back to the energy storage source to recharge the storage source, as well as provide energy to charge a second energy storage system.

METHOD FOR SUPPLYING ELECTRICAL POWER

The invention relates to a method for supplying electrical power into an electrical supply network via at least one wind turbine, wherein the supply is controlled in such a way that changes to the supplied power are limited, at least one limiting gradient is provided as a limit, which determines the value of the maximum change and which sets at least one limiting gradient in accordance with a characteristic and/or an instantaneous condition of the supply network.

ENERGY STORAGE UNITS AND SYSTEMS WITH SEGMENTED BRANCH INTERCONNECTS

An energy storage unit (ESU) is provided herein. The ESU includes a housing forming an interior volume configured to store a plurality of batteries that can collectively provide a maximum power level. The ESU includes a segmented branch interconnect system including a power transfer assembly that includes a first power interconnect system and a second power interconnect system. The second power interconnect system is configured to be coupled to a first adjacent power interconnect system of a first adjacent ESU. The power transfer assembly includes one or more conductors coupled to the first power interconnect system and the second power interconnect system, and is configured to transfer electrical power therebetween. The power transfer assembly is rated to transfer a power level that is at least three times the maximum power level provided by the plurality of batteries stored in the housing.

METHOD AND APPARATUS FOR MANAGING POWER FLOW BETWEEN AN ALTERNATE ENERGY SOURCE AND A STORAGE DEVICE

A system that efficiently captures and utilizes the maximum generation capacity of an alternate energy source is disclosed. A first power converter is provided between the alternate energy source and a load. The first power converter is selected such that the capacity of the power converter is less than the generation capacity of the alternate energy source. A second power converter is selected such that the capacity of the second converter is at least equal to the difference between the capacity of the alternate energy source and the first power converter. A battery is provided to store the additional energy generated by the alternate energy source, and the second power converter is connected between the output of the alternate energy source and the battery. The power output from the first power converter is utilized to control operation of the second power converter.

METHOD AND APPARATUS FOR BIDIRECTIONAL STORAGE AND RENEWABLE POWER CONVERTER

An energy storage system for renewable energy applications includes a renewable energy source, a bidirectional inverter connected an AC bus and a DC bus, an energy storage unit connected to the bidirectional DC/DC converter, and a control system comprising one or more controllers coupled to the bidirectional inverter and the bidirectional DC/DC converter. The bidirectional inverter is connected to the renewable energy source and a bidirectional DC/DC converter through the DC bus. The control system is configured to facilitate the operation of the bidirectional DC/DC converter and the bidirectional inverter. The energy storage system both stores energy from the renewable energy source and a utility grid, and also supplies power to the utility grid. The energy storage system is utilized in a method for supporting frequency regulation of a utility grid and a method for controlling an output power ramp rate for a renewable energy storage system.

STORAGE UNIT FOR A CONSUMER AND STORAGE SYSTEM

The invention relates to a storage unit (10) for a load, having a stored energy source (12), in which electrical energy can be stored. The storage unit (10) has a current interface (16), via which the storage unit (10) can be connected to an electrical grid (20). In addition, the storage unit (10) comprises a circuit assembly (14), which is arranged between the stored energy source (12) and the current interface (16) in the direction of current flow, and a server unit, which is designed to establish a decentralized computing network (52) with further server units, by means of which decentralized computing network transactions are managed, controlled and/or monitored in a decentralized manner. The invention further relates to a storage system (54).

SYSTEMS AND METHODS FOR INTELLIGENT CONTROL OF ROTATING ELECTRIC MACHINES

A reconfigurable rotating electric machine having a rotor to rotate in association with a stator. Coils are arranged to form the windings of one or more phases. Each coil or group of coils has a pair of terminals to receive an electrical input. Switches are arranged to connect each coil or group of coils in series or parallel with another coil or group of coils to form defined coil topology configurations. A processor has memory storing settings to determine a state of each of the switches for each of the defined coil topology configurations. The switches are controllable to connect the coils into a force expansion topology configuration to form an electrical machine having two, four, or more virtual poles.

SYSTEMS AND METHODS FOR INTELLIGENT ENERGY STORAGE AND PROVISIONING USING AN ENERGY STORAGE CONTROL SYSTEM

Control of an energy storage and provisioning system is disclosed, including a method in which electrical power is received from a power generator in an energy storage system having energy storage cells. Each of the energy storage cells has switching elements selectively operable to connect with terminals of other energy storage cells. The method further includes determining a condition of a number of the energy storage cells via electrical measurement; and grouping, by controlling operation of the switching elements, a subset of the energy storage cells into a topology configuration based on a condition of individual cells of the subset of energy storage cells. The method further includes storing the received electrical power into the subset of energy storage cells arranged into the topology configuration to optimize storage of the electrical power received from the power generator.

CONTROL OF FUEL FLOW FOR POWER GENERATION BASED ON DC LINK LEVEL

A power generating unit, control unit and modular power generating system. A power generating unit includes an engine-generator set including an engine that produces mechanical power and a generator mechanically coupled to the engine. The generator converts the mechanical power to electrical power provided to a DC link. The control unit includes at least one controller configured to control fuel flow to the engine based on a voltage of the DC link.

COMPRESSED AIR ENERGY STORAGE POWER GENERATION APPARATUS

A compressed air storage electricity generating device 10 is provided with an electricity demand receiving unit 60 which receives an electricity demand value of a consumer facility 3. Further, the device 10 is provided with: a first air supply valve 21a for adjusting a flow rate of compressed air supplied from a low-pressure tank 14 to an expander 16; a second air supply valve 21b for adjusting a flow rate of compressed air supplied from a high-pressure tank 15 to the expander 16; and a control device 22 which opens the first air supply valve 21a in accordance with the electricity demand value, with the second air supply valve closed, if the electricity demand value is less than a certain threshold, and opens the second air supply valve 21b in accordance with the electricity demand value if the electricity demand value is equal to or greater than the certain threshold.

POWER CONTROL DEVICE

A controller for controlling an energy discharge from an energy saving device to a power grid. The system includes decision logic to implement a local response responsive to events currently occurring in a power grid and in addition remote commands sent from a remote location.

A METHODOLOGY FOR TIME-SHIFTING ELECTRICAL GRID ENERGY CONSUMPTION TO OPTIMIZE COST RATE AND GRID LOAD LEVEL

A control process for a power management system comprised of elements which include, but are not limited to, a utility grid, a switch unit, a main distribution panel, a D.C. to A.C. inverter, an energy storage facility (eg, a battery plant), a charging facility to store electrical energy in said energy storage facility, a control unit, a user interface unit, and a machine interface unit is defined. Control process states include, but are not limited to, a Normal state, a Charging state, a Scheduled Off Grid state, an Emergency Off Grid state, and an Emergency Shut Down state. Events which cause transitions in control process states arc described as scheduled events, manually induced events, system events, or external events. Scheduled events include but are not limited to pre-programmed times of day that cause transitions from Normal state to and from Charging state, and from Normal state to and from Scheduled Off Grid state.

POWER CONTROLLER AND VEHICLE EQUIPPED WITH POWER CONTROLLER

An ECU (60) detects the effective value and phase of the voltage from a c ommercial power supply (90) based on the voltage (VAC) from a voltage sensor (74). In addition, the ECU (60) creates a current command (IR) which is the command value of a current (IAC) fed to power lines (NL1, NL2) and in-phase with the voltage from the commercial power supply (90) based on the effecti ve value and phase thus detected and a charge/discharge power command value (PR) for a storage battery (B). The ECU (60) controls the zero-phase voltage of inverters (20, 30) based on the current command (IR) thus created. ...

ENERGY ARBITRAGE BY LOAD SHIFTING

Methods and system are provided for realizing energy cost savings through load shifting utilizing a battery bank that may serve as a battery back-up on a premises for providing power in the event of a grid power outage or curtailment. A budget of unreserved cycles of battery charging and discharging is determined, taking into account the rated battery life in terms of both time and number of cycles. Load shifting is executed in accordance with an established schedule of the identified days, by discharging the batteries dring peak usage hours and charging the batteries during off-peak periods In the event the budget of unreserved cycles exceeds the number of profitable days for load shifting, the depth of discharge on each cycle may be increased to realize greater savings on the scheduled days, at the tolerable cost of losing cycles not expected to be used in any event.

SYSTEM AND METHODS FOR SELF-HEALING GRID USING DEMAND SIDE MANAGEMENT TECHNIQUES AND ENERGY STORAGE

A self-healing power grid control system includes a power grid having a plurality of network islands with a plurality of linear and non-linear loads. A plurality of control sensors communicate with the power grid to monitor the electrical characteristics of the power grid. A plurality of controlled relays are in electrical communication with the plurality of non-linear loads. A battery energy storage system (ESS) is in electrical communication with a main power source and a network island. A first restoration controller is in electrical communication with the control sensors, the controlled relays, and with the battery ESS. The first restoration controller receives control signals from the control sensors, and in response to detecting an irregularity in the power grid, automatically actuates the battery ESS to stabilize power to the linear loads, and disconnects selected controlled relays to disconnect power to a calculated percentage of the non-linear loads.

GAS TURBINE ENGINE AND ELECTRICAL SYSTEM COMPRISING ELECTRICAL BUSES

One embodiment of the present disclosure is a unique gas turbine engine. Another embodiment of the present disclosure is a unique machine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and electrical systems.

DRILLING RIG POWER SUPPLY MANAGEMENT

A power system and method for the adaptive power control of the drilling rig which includes at least one power consuming component, drilling rig power bus, as well as a mechanical power transmission system. While operating the internal combustion engine in its efficient operating range, unrequired mechanical power is converted to electrical power for storage, or use via the electrical bus on the rig. When the internal combustion engine is not required to provide mechanical or electrical power it is deactivated, and then reactivated -electrical storage on the system in the meantime providing electrical power to the bus as required. The power supply and management system could be retroactively fitted to an existing drilling rig by the incorporation of a generator and electrical storage device thereon. The system and method of the present invention allows for optimized use of combustion based power on a drilling rig, while minimizing environmental emissions from idle running of the at least ...

CONTROL DEVICE, POWER STORAGE DEVICE, BATTERY CONTROL SYSTEM, BATTERY CONTROL DEVICE, CONTROL METHOD, BATTERY CONTROL METHOD, AND RECORDING MEDIUM

A control device for controlling the operation of a supply and demand adjustment device connected to a power grid comprises: a detection means for detecting a state of the supply and demand adjustment device; a communication means for transmitting the detection result of the detection means to an external device and receiving operation control information for controlling the operation of the supply and demand adjustment device from the external device; a grasp means for receiving and grasping an adjusted power amount transmitted by bidirectional communication or one-way communication; and a control means for, based on the adjusted power amount and the operation control information, controlling the operation of the supply and demand adjustment device.

POWER SUPPLY DEVICE, POWER SUPPLY SYSTEM, AND METHOD OF CONTROLLING POWER SUPPLY

A power supply control device includes a control unit, and a power path that is connected to a primary external power system. If a connection state between the primary external power system and the power path is in a disconnected state, the control unit is configured to control power output of at least one power conditioner of at least one corresponding secondary external power generation unit, based on (a) an amount of power consumption of a specific load connected to the power supply control device through the power path, and (b) a power generation output of the secondary external power generation unit.

POWER CONTROL SYSTEM

A power control system for providing power sharing is provided. An energy storage device is configured to supply a first portion of power of an electrical power as a total load power and an engine-driven electrical machine is configured to supply a second portion of power of the total load power. A power converter is electrically coupled to the energy storage device and the engine-driven electrical machine such that the power converter is configured to supply the total load power to an electrical load device. A controller is coupled to the power converter and the controller receives characteristic data from at least one of the energy storage device, the engine-driven electrical machine, and the electrical load device. Based on the received characteristic data, the controller determines a power sharing proportion of a power sharing amount of each of the first portion of power and the second portion of power of the total load power to be supplied via the power converter to the electrical ...

HYBRID POWER PLANT FOR IMPROVED EFFICIENCY AND DYNAMIC PERFORMANCE

A hybrid power plant is characterized by a substantially constant load on generators regardless of momentary swings in power load. Short changes in power load are accommodated by DC components such as capacitors, batteries, resistors, or a combination thereof. Resistors are used to consume power when loads in the power plant are generating excess power. Capacitors are used to store and deliver power when the loads in the power plant demand additional power. Reducing rapid changes in power load as seen by the generators allows the generators to operate at higher efficiencies and with reduced emissions. Additionally, power plants employing combinations of generators, loads, and energy storage devices have increased dynamic performance.

STORAGE SYSTEM THAT MAXIMIZES THE UTILIZATION OF RENEWABLE ENERGY

An electrical energy storage system for maximizing the utilization of renewable energy. In the system an inverter connected to at least one battery module is integrated with a grid power source and home or office electrical devices. Additionally, a renewable energy source can be included in the system. A controller is used to control the components for reducing demands on the grid power source during peak demand periods and for maximizing the utilization of the renewable energy source connected to the system.

BATTERY ENERGY SOURCE ARRANGEMENT AND VOLTAGE SOURCE CONVERTER SYSTEM

The invention relates to power networks, and in particular to a battery energy source arrangement 4 and voltage source converter system in such network. The battery energy source arrangement comprises a battery energy storage 2, which in turn comprises one or more parallel-connected battery strings 51,..., 5i,..., 5n, and connection means for connecting a voltage of battery strings 51,..., 5i,..., 5n to a load 1. The battery energy arrangement 4 comprises further battery string voltage adapter devices 71,..., 7i,..., 7n connected in series with a respective one of the one or more battery strings 51,..., 5i,..., 5n wherein the battery string voltage adapter devices 71,..., 7i,..., 7n are designed to handle only a fraction of the voltage handled by the battery strings 51,..., 5i,..., 5n.

LOW VOLTAGE LOAD CONTROL SWITCH

A method, device, and system for controlling power delivered to a power-consuming device. The device can receive a control signal from a thermostat, where the control signal activates the device. The device can then determine when a control event is to occur. At such time, the device terminates power delivered to the power-consuming device and continues to withhold the power until the control event expires. When the control event has ended, the device allows power to flow to the power-consuming device. The device uses a timer and a communication component to send and receives signals associated with a control event to a user.

MANAGEMENT OF BATTERY CAPACITY

Disclosed is a battery cell system, which provides regulation service to the grid, as well as the battery being used as part of an uninterruptible power supply (UPS). Part of the capacity of the storage batteries may be used for regulation service, while maintaining a reserve of battery capacity to provide the UPS supply if required. An advantage is that the battery installation can be more effectively monitored as it is more regularly being charged and discharged.

Устройство управления трехфазным выпрямительно-инверторным модулем

Реферат Устройство управления трехфазным выпрямительно-инверторным модулем Полезная модель относится к классу устройств преобразовательной техники и может быть использована при создании систем бесперебойного питания и частотного управления электродвигателями. Устройство управления трехфазным выпрямительно-инверторным модулем содержит комплект транзисторного инвертора, микроконтроллер, буферный дискретный каскад, два цифровых интерфейса, импульсный регулятор напряжения, блок опторазвязки, дискретные входы команд, трехпроводную внутреннюю информационную двунаправленную последовательную шину обмена с мультиплексированием, знакосинтезирующий OLED дисплей, цифро-аналоговый преобразователь, аппаратный ШИМ контроллер вращения фаз, линейный стабилизатор питания, компаратор защиты, восьмиканальный аналого-цифровой преобразователь, блок гальванической изоляции драйверов инвертора, датчик входного тока, датчик напряжения в звене постоянного тока, блок гальванической развязки, термодатчик инвертора, драйвер силовых ключей инвертора. Дополнительно введены комплект выпрямителя, силовой вход которого подключен к клеммам трехфазной питающей сети, а выход ко входу комплекта транзисторного инвертора, термодатчик выпрямителя, выход которого подключен ко входу восьмиканального аналого-цифрового преобразователя, датчики входного напряжения, входы которого подключены к клеммам питающей сети, а выход подключен ко входу восьмиканального аналого-цифрового преобразователя, датчики входного тока, входы которого подключены к клеммам питающей сети, а выход ко входу восьмиканального аналого-цифрового преобразователя, датчик постоянного тока, вход которого подключен к выходу комплекта выпрямителя, а выход подключен ко входу восьмиканального аналого-цифрового преобразователя драйвер силовых ключей выпрямителя, вход которого подключен к выходу блока гальванической изоляции драйверов выпрямителя, а выходы подключены к информационным входам комплекта выпрямителя, датчик выходного тока, входы которого ...

Charge/discharge control apparatus and charge/discharge control method

Included are a power-generation amount calculating section calculating an expected amount of power-generation being an amount of power generated by a power generating section in the future, for each predetermined period, a power-consumption amount calculating section calculating an expected amount of power-consumption being an amount of power consumed by a power load, for the predetermined period, an excess power period determining section determining an excess power period, an excess power amount calculating section calculating an expected excess power amount, and a charge/discharge control section controlling charge/discharge of a battery so that a remaining amount of the battery at the beginning of the excess power period becomes an amount resulting from subtracting the expected excess power amount from a pre-set charge amount.

Air conditioner and method for controlling the same

An air conditioner which may controlled to adapt to changes in power rates, and an associated method, are provided. The method may include receiving electric power information, determining whether a current power rate included in the received information is higher than a preset reference value, and supplying electric power from a supplementary electric power source to at least one appliance in a network to which the air conditioner is connected if the current power rate is higher than the preset reference value.

Systems and Methods for Distributing Energy in a Roadway

A system and method for powering of a vehicle is disclosed. In accordance with embodiments of the present disclosure, a roadway may include an embedded conductor and a source of energy. The embedded conductor may be embedded in the roadway configured to transfer energy to a vehicle upon the roadway via magnetic induction or electric conduction. The source of energy may be applied upon or embedded in the roadway and configured to generate electric current to the embedded conductor. The source of energy may include a solar power generator, a thermoelectric power generator, a piezoelectric power generator, and/or any other suitable source of energy.

Centralized power conditioning

A power plant for providing electric power to a power grid includes energy sources; power conditioning units and a controller configured to cause power provided to the grid to have selected electrical characteristics. The controller is in high speed real-time communication with the power conditioning units and programmed to provide instructions to the power conditioning units.

Submodule for a multi-stage power converter having additional energy storage device

A submodule for forming a multilevel power converter for electric energy distribution and transmission, includes a capacitor unit and a power semiconductor circuit having power semiconductors that can be switched off. The capacitor unit and the power semiconductor circuit are interconnected in such a way that, depending on the actuation of the power semiconductors of the power semiconductor circuit, at least the voltage released at the capacitor unit or a zero voltage can be generated at output terminals of the submodule. The submodule is not only able to compensate for reactive power, but to exchange active power with a connected alternating current network. An additional energy storage device is connected to the capacitor unit through a chopper unit for regulating current flow between the additional energy storage device and the capacitor unit.

Power generation system

A power generation system is provided that implements an efficient, labor-saving system interconnection in which an engine generator system, an external power supply system, and a capacitor are connected in parallel to each other, without the conventional practice to change the configuration of the engine generator system or provide an additional circuit. A power generation system implements a system interconnection in which an engine generator system, an external power supply system, and a capacitor are connected in parallel to each other. The power generation system includes discontinuing means for discontinuing direct-current voltage control by which a direct current voltage of the capacitor is controlled when electric power from a generator is supplied to the capacitor while direct current electric power that an external power supply supplies is lower than demand power that a power generation system is supposed to supply.

Energy Storage Systems And Associated Methods

A method for responding to a change in electric power demand includes (1) charging an energy storage subsystem from an electric power grid, (2) discharging the energy storage subsystem into the electric power grid at a discharge rate that is less than a maximum rate of discharge of the energy storage subsystem, and (3) adjusting the discharge rate in response to a signal selected from the group consisting of a signal to provide a regulation up service and a signal to provide a regulation down service. An energy storage system includes an energy storage subsystem for storing electric power, an interface for interfacing the energy storage subsystem with an electric power grid, and a controller configured to control operation of the interface in response to a signal to provide a regulation up service and a signal to provide a regulation down service.

Fuel Cell System with Grid Independent Operation and DC Microgrid Capability

A fuel cell system includes grid independent operation with DC microgrid capability. This fuel cell system has a capability of operation with and without the grid, and with DC micro-grid capability.

Battery management system, method of removing polarization voltage of battery, and estimating state of charge of battery

A battery management system according to an exemplary embodiment of the present invention includes: a current measuring unit for sampling a charge current and a discharge current of a battery; a charge and discharge amount calculator for calculating a charge and discharge amount corresponding to a difference between the sampled charge current and the sampled discharge current; a polarization voltage calculator for calculating a polarization voltage corresponding to the charge and discharge amount and a temperature of the battery; and a pulse generator for applying a polarization voltage reset pulse for the battery to remove the polarization voltage.

Power management system

Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.

Mobile power system

A mobile power system comprises a plurality of energy sources, wherein at least one energy source is a solar powered generating device and at least one energy source is a wind powered generating device; a plurality of electronic and telecommunications components configured to receive the power generated by the plurality of energy sources and/or convert the power generated to direct current power; a plurality of batteries configured to store the direct current power; and at least one transportable housing configured to hold the plurality of energy sources, the plurality of electronic and telecommunications, and the plurality of batteries during transport of the housing, and wherein the housing is configured to remotely operate the at least one solar powered energy device and the at least one wind powered generating device when the mobile power system is in operation.

Power control apparatus and power control method using same

Disclosed is a power control method and a power control apparatus. The power control method comprises the steps of: a first charge comparison step for receiving charge information of supplied power, and comparing the charge of the supplied power with a preset reference charge; and a second charge comparison step for comparing the charge of the supplied power with the preset lowest charge. The method comprises the steps of: a first power quantity comparison step for confirming a stored power quantity within a power storage unit, and comparing the stored power quantity with a preset reference power quantity; and a second power quantity comparison step for comparing the stored power quantity with a preset power quantity demand. Further, the method comprises a control step for selecting one of externally supplied power and internally stored power as the usage power for the customer, through at least one of a charge comparison step and the power quantity comparison step.

Methods and systems for charging an electric vehicle

An electric vehicle charging system is described. The electric vehicle charging system includes a plurality of electric vehicle charging apparatus coupled to, and configured to receive electric power from, a distribution transformer. The electric vehicle charging system also includes a central processing device configured to control operation of the plurality of electric vehicle charging apparatus.

Energy storage system

In an energy storage system, power from at least one of a solar cell, a commercial AC power source, and a storage battery is supplied to load devices. In the daytime, under the condition that an amount of power generated by the solar cell is less than an amount of power consumed by the load device, the discharge from the storage battery to the load device is permitted or prohibited if the charge level of the storage battery is higher or is not higher than the reference charge level. The discharge from the storage battery which makes the charge level of the storage battery lower than the reference level is permitted at night.

Battery system and energy storage system including the same

A battery system and an energy storage system including a battery module. The battery system includes at least one battery module that may perform charging and discharging, and a battery management unit that controls the charging and the discharging of the battery module. The battery management unit varies a charge limit value for stopping the charging of the battery module and a discharge limit value for stopping the discharging of the battery module. Accordingly, a lifetime of the battery module is extended.

Grid tied inverter, system and method

A grid tied inverter connectable to an electricity grid, the grid tied inverter comprising a DC to DC current fed push-pull converter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronised to the electricity grid, the push-pull converter comprising a transformer having a first side connectable to a battery and a second side connectable to the grid, wherein each of the two primary sides is connected to ground via a switching transistor; and respective voltage clamps are connected between the respective primary side of the transformer and the respective switching transistor, the voltage clamp commutating the current from the respective primary side of the transformer when the switching transistor is turned off.

Battery production device

A battery production device, in particular a forming device formation device ( 1 ) for forming the formation of electrochemical cells ( 4 ), comprising a production unit, in particular a receiving device ( 3 ) for receiving at least one electrochemical cell ( 4 ), in particular a plurality of electrochemical cells ( 4 ), a power network connecting device ( 5 ), by means of which the battery production device can draw electrical energy from a power network ( 2 ), in particular a public power network, and can emit electrical energy to the power network, a control device ( 7 ) for controlling at least parts of the battery production, characterised in that the control device ( 7 ) is constructed in such a way that the electric power drawn from the power network ( 2 ) and/or the electrical power emitted to the power network ( 2 ) can be controlled as a function of the services power offered in the power network, in particular can be controlled as a function of the temporary services power offered in the power network.

Charging device and methods of authorizing a charging request

A charging device includes a power delivery system configured to supply power to at least one load coupled to the charging device. The charging device also includes a processor coupled to the power delivery system, and the processor is programmed to transmit a charging request to a remote device. The charging request includes an amount of power requested to be supplied to the at least one load. The processor is programmed to receive data related to a loading of a power distribution device, wherein the power distribution device is configured to supply power to the charging device. The processor is further programmed to selectively activate the power delivery system to supply power to the at least one load based on the data received.

Method for Controlling the State of Charge of an Electrical Energy Store

For controlling the charge state of a battery in a hybrid vehicle having an internal-combustion engine and an electric machine, the battery is operated in a working state-of-charge range falling within a theoretically possible state-of-charge range. In a first sub-range, the battery is charged by the electric machine, the electric machine working as a generator and being engine driven. In a second sub-range, the battery is neither charged nor discharged, the electric machine working as a generator and being driven by the engine and, in the process, supplying only an on-board power supply system of the hybrid vehicle with current. In a third sub-range, the battery is discharged and, in the process, supplies the on-board power supply system with current, the electric machine running along passively. In a fourth sub-range, the battery is discharged and, in the process, supplies current to the electric machine operating as an electric motor.

System for Flexible Electrical and Mechanical Installation of an Electric Vehicle Charging Station

An electric vehicle charging apparatus is disclosed. The electric vehicle charging apparatus has a housing body that is configurable to provide a number of electrical connection options, such as bottom and rear corded options as well as direct wired options. In another aspect, a mounting installation of the electric vehicle charging apparatus is provided. In yet another aspect, a housing body having a first front cavity and a second front cavity is provided. An inner cover covers the second front cavity, and a maximum amperage set switch is operable to set a maximum charge amperage for the electric vehicle charging apparatus. Methods of configuring the electric vehicle charging apparatus are provided, as are other aspects.

Frequency based electric vehicle charge controller system and method for implementing demand response and regulation services to power grid using frequency detection

Frequency responsive charging for plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV), a frequency sensing charging system and a method are provided for implementing demand response and regulation services to power grid using frequency detection for a frequency-based charge controller for plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV). A frequency of the power grid is continuously monitored and compared to a predefined tolerance band by a frequency sensor. Responsive to the frequency being outside the predefined tolerance band, the frequency is applied to a programmable logic controller. The programmable logic controller uses the applied frequency to identify a control action. A charge controller and a switch coupled to a battery charger receive respective identified control actions for controlling the battery charger.

Electric power information management apparatus, electric power information management system, and electric power information management method

An electric power information management apparatus includes a power meter that measures electric power data on electric power to be supplied from a storage battery of a vehicle to an electric power facility; a security module that associates and encrypts identification information corresponding to the vehicle and the measured electric power data; a communication device that transmits to an electric power management database the identification information corresponding to the vehicle and the electric power data encrypted by the security module to store the electric power data associated with the identification information in the electric power management database; and an electric power control device that extracts necessary electric power from the electric power facility and supplies the electric power to the storage battery of the vehicle corresponding to the identification information, based on the electric power data stored in the electric power management database, being associated with the identification information.

Grid load synchronization device and method

The grid load synchronization system described herein permits proactive mitigation of the effects of large loads transitioning on and off the power grid and the resultant risks and power quality issues associated therewith. The disclosed proactive system permits a grid-connected power consumer to synchronize demand with power storage equipment in real time using a digital communication link. The power consumer transmits requests to bring a load online or offline to a control site. The control site coordinates power grid source(s) and power grid loads to maintain power quality when loads go on and offline. The control sites manage requests from multiple power consumers and schedule the various loads for the consumers to mitigate the effects of large loads transitioning on and off the power grid. The resulting power quality can be guaranteed when adequate battery resources are made proactively available, rather than reacting to line conditions to engage compensation actions.

Multi-series battery control system

A multi-series battery control system comprises a plurality of unit battery cell of which unit consists of multiple battery cells connected in series; a plurality of control IC comprising a control circuit for controlling the unit battery cell; a main controller that sends and receives signal to/from the control ICs via an insulation; means for sending an abnormality signal, which represents the existence or the absence of abnormality of the control ICs or the battery cells, to the main controller from the control ICs, responding to the first signal outputted from the main controller via the insulation; and means for searching contents of the abnormality in the control ICs or the battery cells and sending the abnormality contents signal based on the search, to the main controller from the control ICs, responding to the second signal outputted from the main controller via the insulation.

Power Supply System, Controller of Power Supply System, Method of Operating Power Supply System, and Method of Controlling Power Supply System

A power supply system of the present invention includes: a power generation system ( 101 ); a power storage unit ( 107 ) configured to supply electric power to the power generation system ( 101 ) and an external electric power load ( 105 ); and a controller ( 110 ) configured to, in a case where it is predicted that at least one of the sum of activation electric power of the power generation system ( 101 ) and power consumption of the external electric power load ( 105 ) when activating the power generation system ( 101 ) and the sum of stop electric power of the power generation system ( 101 ) and the power consumption of the external electric power load ( 105 ) when stopping the power generation of the power generation system ( 101 ) exceeds the upper limit electric power receivable from an electric power system ( 104 ), supply the electric power of the power storage unit ( 107 ) to at least one of the power generation system ( 101 ) and the external electric power load ( 105 ) such that the electric power amount supplied from the electric power system ( 104 ) does not exceed the upper limit electric power.

Electric charging system and electric charger

There is provided an electric charging system in which an electric charger and an electric vehicle are connected by a charging cable. The electric charger calculates a voltage drop amount in the charging cable on the basis of a supplied current at the electric charger side and an electric resistance of the charging cable. The electric charger also compares a determination voltage with a supplied voltage at the electric charger side and determines that a battery has been charged to a fully charged state when the supplied voltage reaches the determination voltage. The determination voltage used for such full charge determination is updated by adding the voltage drop amount to a basic determination voltage that is set in advance.

Clustering method, optimization method using the same, power supply control device

The present invention is a method for performing clustering of sizes of loads of a power supply system with history data for each predetermined period as objects to be classified, wherein the method is such that, for each of the history data, subtraction processing is performed thereupon in which the amounts of specific loads which have been identified as loads of the power supply system are deducted, whereupon clustering is performed for each of the history data for which the subtraction processing has been performed thereupon as the objects to be classified.

Method and system for co-operative charging of electric vehicles

A method and system provide for the cooperative charging of electric vehicles. By using power line communications, chargers of the electric vehicles who are serviced by the same distribution transformer can form self-contained local area networks due to the nature of power line communications (PLCs). Alternatively, or in addition to the PLCs, other communication networks, such as the Internet and local area networks, may be used as part of the communications infrastructure for the chargers. After the chargers of the electric vehicles are coupled to one another through power line communications or traditional communications networks, they can form a logical token ring network. According to this token ring network, a predetermined number of tokens can be assigned within the token ring network for permitting chargers with tokens to charge respective electric vehicles while chargers without tokens must wait until they receive a token to initiate charging.

Adaptive stochastic controller for distributed electrical energy storage management

A system for managing a battery in communication with an electrical grid that includes (a) a data collector to collect data representative of an electrical grid; (b) an ASC controller operatively coupled to the data collector and adapted to receive collected data therefrom, the ASC controller comprising a financial strategizer to send instructions based on the collected data; and (c) a battery controller operatively coupled to the ASC controller to receive the instructions transmitted by the ASC controller, the battery controller configured to dictate whether the battery receives electricity from, or transmits electricity to the electrical grid.

Battery power supply device and method of controlling power of the same

A battery power supply device is provided. The battery power supply device includes: an input unit that receives external power; a battery power unit that is connected to the input unit to charge a battery with the external power; a current detection unit that detects a current that is supplied to a load and that provides the current to the battery power unit; and an output unit that provides the external power and battery power from one node to the load and that receives a load current from the battery power unit to adjust output of the battery power.

Power supply system

[Problem] To provide a power supply system which effectively utilizes a power storage unit and also limits degradation of the power storage unit. [Solution] A power supply system ( 1 ) is provided with: a power storage unit ( 2 ) for charging supplied electric power and supplying the charged electric power by means of discharge; and a power storage unit controller ( 3 ) for controlling the discharging of the power storage unit ( 2 ). The power storage unit controller ( 3 ) sets a discharge period during which the power storage unit ( 2 ) can be discharged. Furthermore, during the discharge period, the power storage unit controller ( 3 ) determines the electric energy to be supplied by means of the discharging of the power storage unit ( 2 ) during the remaining discharge period on the basis of the remaining discharge period and the electric energy that can be discharged by the power storage unit ( 2 ).

Power supply system

A power supply system provided with a plurality of battery units, a power converter connected to parallel connection lines and including a bidirectional DC/AC converter circuit or a bidirectional voltage converter circuit, and a master controller for controlling the power converter, wherein the master controller: receives a switch state signal expressing that selection switches are actually closed; causes the power converter to operate after at least a prescribed standard number of the selection switches are closed; calculates target charge/discharge power according to the number of storage battery control units connected to the power converter on the basis of the switch state signal; and controls the power converter in such a manner that the target charge/discharge power is reached.

Power supply and demand leveling system

The invention judges a total power supply/demand condition of the electricity consumers 2 as a whole according to an individual power supply/demand condition of electricity consumers 2 , judges a total usable capacity of all batteries 17 according to a usable capacity of the batteries 17 of electric vehicles 10 parked at electricity consumers 2 , obtains required charge/discharge amounts of all the batteries 17 according to a result of comparison of the total power supply/demand condition of the electricity consumers 2 as a whole with the total usable capacity of all the batteries 17 , subjects the batteries 17 to charge/discharge controls according to the required charge/discharge amounts, the power supply/demand conditions of the electricity consumers 2 , and the usable capacities of the batteries.

Energy management system

An energy management system has an integration control portion that performs control to charge a storage battery with a power of such an amount that a power consumption including a power supplied by a supply portion is equal to or smaller than a target value indicated by power consumption target information recorded in a recording portion when a power consumption detected by a detection portion is smaller than the target value, and to supply a building with a power with which the storage battery is charged such that the power consumption including the power supplied by the supply portion coincides in amount with a power equal to or smaller than the target value indicated by the power consumption target information recorded in the recording portion when the power consumption detected by the detection portion is larger than the target value.

Multi-series battery control system

A multi-series battery control system comprises a plurality of unit battery cell of which unit consists of multiple battery cells connected in series; a plurality of control IC comprising a control circuit for controlling the unit battery cell; a main controller that sends and receives signal to/from the control ICs via an insulation; means for sending an abnormality signal, which represents the existence or the absence of abnormality of the control ICs or the battery cells, to the main controller from the control ICs, responding to the first signal outputted from the main controller via the insulation; and means for searching contents of the abnormality in the control ICs or the battery cells and sending the abnormality contents signal based on the search, to the main controller from the control ICs, responding to the second signal outputted from the main controller via the insulation.

Control apparatus

Provided is a control apparatus for an ancillary service that utilizes storage batteries. The control apparatus, which is for controlling charging/discharging between a power storage unit and a power grid, and of discharging from the power storage unit to a load, allots the rechargeable batteries to a power-grid power-storage section that is for controlling discharging to the power grid on the basis of the amount of economical profit to be raised by this control and/or the state of rechargeable batteries contained in the power storage unit, and to a load power-storage section that is for controlling discharging to the load, to control discharging from the power-grid power-storage section to the power grid, and discharging from the load power-storage section to the load.

Electric power supply-and-demand control apparatus

According to one embodiment, an electric power supply-and-demand control apparatus includes a measuring module which measures an output power characteristic of dispersed power sources arranged in various places in an electric power system. The electric power supply-and-demand control apparatus includes a determination module which determines based on the output power characteristic measured by the measuring module whether to set each of the dispersed power sources in various places as a dispatching object for an electric power supply-and-demand plan at a specific time on a specific date.

Electricity storage apparatus for controlling power consumption and method therefor

A method for controlling power consumption by an electricity storage apparatus is provided. The method includes receiving, from a utilizing side, an inquiry request signal for inquiring whether power supply from the electricity storage apparatus is possible, inquiring an amount of charged power from the electricity storage apparatus compared to a capacity of the electricity storage apparatus, comparing a required amount of power, which is included in the inquiry request signal, with the amount of charged power, and based on the comparison result, determining an amount of power to supply to the utilizing side and whether to switch to an operation mode of supplying the amount of power to the utilizing side, and upon determining to switch to the operation mode, checking an amount of available supply power in accordance with the operation mode, and transmitting information about the checked amount of available supply power to the utilizing side.

Energy storage system for supplying power to loads of a drilling rig

A system for supplying power to a drilling rig has an engine/generator with an output line so as to transfer power therefrom, an energy storage system connected to the engine/generator, and a load connected to the energy storage system such that power from the energy storage system is directly transferred to the load and such that power from the engine/generator is electrically isolated from the load. The engine/generator has a capacity greater than an maximum power requirement of the load. The energy storage system can include at least one battery.

System and Method for Energy Storage Management

A method is provided for efficiently managing energy consumption using stored energy. The method accepts input energy (e.g., from a power utility) and maintains a record of energy consumption. An energy consumption peak is predicted in response to analyzing the record of energy consumption, and the input energy is augmented with stored energy during the predicted energy consumption peaks. More explicitly, a peak shaving value is selected based on a fraction of the predicted energy consumption peak, and the stored energy is used when energy consumption exceeds the peak shaving value. In one aspect, after a determination is made to use stored energy, it is simply used while it is available. Otherwise, it is supplied based upon an analysis of a predicted value of the stored energy.

Plug arrangements for alleviating peak loads

Methods and arrangements for load-shifting time deferrable devices. An electrical load scheduling mechanism is provided, and this is placed in communication with an appliance. Electrical grid load conditions are assessed, and delivery of electrical power to the appliance is scheduled via the electrical load scheduling mechanism. The scheduling includes altering a predetermined delivery of electric power to the appliance based on the assessed electrical grid conditions

Device and method for changing a power consumption profile of at least one person in a house or a residential unit having a distribution network

A device for changing a power consumption profile of at least one person in a house or a residential unit having a distribution network, the device having: an electrical storage mechanism designed to store electrical energy, a power switching device that is connected to the electrical energy storage mechanism and the distribution network, and which is designed to switch on and off an electric energy flow between the electrical energy storage mechanism and the distribution network, and a control device, which is designed to control the electrical energy flow with the aid of at least one variable criterion and thereby to change the power consumption profile of the distribution network.

Method and apparatus for actively managing electric power over an electric power grid

Systems and methods for managing power supplied over an electric power grid by an electric utility and/or other market participants to multiple power consuming devices, each of which having a Power Supply Value (PSV) associated with its energy consumption and/or reduction in consumption. Power flow to the power consuming devices is selectively enabled and disabled, or power-reduced thereto, by one or more controllable devices controlled by the client device. Power control messages from a controlling server indicate amounts of electric power to be reduced and an identification of at least one controllable device to be instructed to disable or reduce a flow of electric power to one or more associated power consuming devices.

System and Methods for Actively Managing Electric Power Over an Electric Power Grid

Systems and methods for managing power on an electric power grid including a server for communicating IP-based messages over a network with distributed power consuming devices and/or power supplying devices, the IP-based messages including information including a change in state of the power consuming device(s), a directive for a change in state of the power consuming device(s), a priority message, an alert, a status, an update, a location with respect to the electric power grid, a function, device attributes, and combinations thereof.

Electrical storage system and mobile body

An electrical storage system includes: a plurality of electrical storage portions that are connected parallel to each other; a measurement portion that measures the full charge capacity of each of the electrical storage portions while switching an electrical storage portion that is a measurement target among the electrical storage portions; and a charge and discharge control portion that performs charge and discharge control on the electrical storage portions. The charge and discharge control portion makes other electrical storage portion other than the measurement target perform charge or discharge in a period of time during which the measurement portion measures the full charge capacity of the electrical storage portion that is the measurement target.

Battery Management System For A Distributed Energy Storage System, and Applications Thereof

The present invention provides a distributed energy storage system, and applications thereof. In an embodiment, the distributed energy storage system includes power units, wherein each power unit has a multi-cell battery; a battery manager that monitors battery cell voltages and temperatures; and a controller. The controller provides a first control signal that causes the power unit to store energy in the battery and a second control signal that causes the power unit to generate an alternating current. A server in communication with each of the power units stores data collected from the power units about the batteries and analyzes the data to determine how much available energy is stored in the batteries that can be used to alter a load demand of a power network, hi an embodiment, the batteries are lithium ion batteries capable of storing at least ten kilowatt- hours of energy.

ASSEMBLED CELL CONTROL SYSTEM AND POWER SUPPLY SYSTEM COMPRISING SAME

An assembled battery control system is provided with an assembled battery composed of a plurality of rechargeable battery packs connected in series, and a control unit for controlling the assembled battery. Each battery pack has a discharge unit. The control unit confirms the open-circuit voltage of each battery pack in the assembled battery after the assembled battery has been fully charged, determines a target voltage on the basis of the open-circuit voltage confirmation results for each battery pack in the assembled battery, causes the discharge unit to discharge each battery pack in the assembled battery that has an open-circuit voltage greater than the target voltage until the open-circuit voltage of each of said battery packs reaches the target voltage, fully charges the assembled battery again, discharges the assembled battery until a first predetermined level has been reached, and learns the capacity of each battery pack in the assembled battery. 1. A control system for an assembled battery provided with an assembled battery having a plurality of rechargeable battery packs connected in series , and a control unit for controlling the assembled battery ,the control system for an assembled battery characterized in thatthe battery packs have a discharge unit, andthe control unitconfirms the open-circuit voltage of each battery pack in the assembled battery after the assembled battery has been fully charged,determines a target voltage on the basis of the open-circuit voltage confirmation results for each battery pack in the assembled battery,causes the discharge unit to discharge each battery pack in the assembled battery that has an open-circuit voltage greater than the target voltage, until each of said open-circuit voltages has reached the target voltage,fully charges the assembled battery once again discharges the assembled battery until a first predetermined level has been reached, and learns the capacity of each battery pack in the assembled battery.2. The ...

Power control system

To provide a power control system which evaluates an applied control pattern over a period of a certain length or more, so as to be used for the subsequent control with a configuration in which a discharge start time and output of an electric storage device are changed.

Method and apparatus for delivering power using external data

A control system for an energy storage system located behind a utility meter uses a unique, feedback-based, communication and control method to reliably and efficiently maximize economic return of the energy storage system. Operating parameters for the energy storage system are calculated at an external, centralized data center, and are selected to prevent electrical power demand of an electric load location from exceeding a specified set-point by discharging energy storage devices, such as DC batteries, through a bidirectional energy converter during peak demand events. The control system can operate autonomously in the case of a communications failure.

Method for balancing frequency instability on an electric grid using networked distributed energy storage systems

Embodiments of the present invention include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. These distributed energy storage systems can operate semi-autonomously, and can be configured to develop energy control solutions for an electric load location based on various data inputs and communicate these energy control solutions to the distributed energy storage systems. In some embodiments, one or more distributed energy storage systems may be used to absorb and/or deliver power to the electric grid in an effort to provide assistance to or correct for power transmission and distribution problems found on the electric grid outside of an electric load location. In some cases, two or more distributed energy storage systems are used to form a controlled and coordinated response to the problems seen on the electric grid.

Battery system and energy storage system including the same

A battery system includes at least one battery unit, and a first battery management system that is operable to control the at least one battery unit. The first battery management system includes a first identification setup that is manually adjustable and is visible on an outside of the first battery management system, and the first battery management system is enabled to effect communication based on the first identification setup.

Modular Power Conversion System

A modular power conversion system. The modular power conversion system includes at least one first electric resource, a modular power stage, at least one second electric resource, and wherein the modular power stage comprising at last one module including power electronics for converting power between the at least one first electronic resource and the at least one second electric resource.

Stationary Storage Device for Temporarily Storing Electric Energy in an Electric Supply Grid, Operating Method, and Retrofitting Module for the Stationary Storage Device

A stationary storage device configured to temporarily store electric energy in an electric supply grid includes at least one electric storage unit, each being connected to a common DC bus by a respective DC-DC converter. The storage device further includes a bidirectionally operated AC-DC converter for coupling the common DC bus to the supply grid, and a charging device configured to exchange energy with an electrically operated motor vehicle. The charging device includes a connection device configured to connect the electrically operated motor vehicle in order to exchange said energy, and a charge control device configured to control exchange of said energy. A coupling device is provided which is configured to electrically connect the connection device to the common DC bus via one or more DC-DC converters in order to exchange said energy. 1. A stationary storage device configured to temporarily store electric energy in an electric supply grid , comprising:at least one electric storage unit, each storage unit being connected to a common DC bus by a respective DC-DC converter; anda bidirectionally operated AC-DC converter for coupling the common DC bus to the supply grid,wherein the stationary storage device has a charging device configured to exchange energy with an electrically operated motor vehicle, said charging device comprising a connection device configured to connect the electrically operated motor vehicle in order to exchange said energy, and a charge control device configured to control exchange of said energy,wherein a coupling device is provided which is configured to electrically connect the connection device to the common DC bus via one or more DC-DC converters in order to exchange said energy.2. The stationary storage device according to claim 1 , wherein the stationary storage device comprises at least two storage units claim 1 , and the coupling device provides a switching device which is configured to connect a first DC-DC converter of a first one ...

UTILITY CONSOLE FOR CONTROLLING ENERGY RESOURCES

A system and method for managing power consumption and storage in a power grid. Measurements are received from a plurality of geographically distributed energy management controllers. Each energy management controllers has energy storage units with stored energy. The measurements comprise the energy production and storage capacity of the energy management controllers and their associated energy storage units. The measurements are processed, e.g., aggregated, and displayed on a graphical user interface. Commands are transmitted to a first subset of the energy management controllers to command the units to discharge their stored energy into a power grid through an inverter. Commands are transmitted to a second subset of the plurality of energy management controllers to store energy in each unit's energy storage unit. 1. A method of controlling energy consumption of a plurality of energy consuming devices at a premises , each of the plurality of energy consuming devices being controlled by a corresponding load controller having integrated measurement capability , each load controller being communicatively coupled to one of a plurality of distributed energy management controllers , the plurality of distributed energy management controllers being communicatively coupled to a computer system of an operations control center , comprising:measuring the individual energy load of each of the plurality of energy consuming devices, the measurement being performed by corresponding load controller;communicating the individual energy load measurements from each load controller to a corresponding one of the plurality of distributed energy management controllers;communicating the individual energy load measurements of each of the plurality of energy consuming devices from the plurality of distributed energy management controllers to the operations control center;processing, by the computer system, the individual energy load measurements received from the plurality of distributed ...

SYSTEMS AND METHODS TO AGGREGATE DISTRIBUTED ENERGY RESOURCES

The present disclosure is directed to systems and methods for economically optimal control of an electrical system. Some embodiments employ generalized multivariable constrained continuous optimization techniques to determine an optimal control sequence over a future time domain in the presence of any number of costs, savings opportunities (value streams), and constraints. Some embodiments also include control methods that enable infrequent recalculation of the optimal setpoints. Some embodiments may include a battery degradation model that, working in conjunction with the economic optimizer, enables the most economical use of any type of battery. Some embodiments include techniques for load and generation learning and prediction. Some embodiments include consideration of external data, such as weather. 1. A system of aggregated distributed energy resources (DERs) , comprising:a plurality of site controllers each corresponding to and controlling a site of a plurality of sites each comprising one or more corresponding DERs of a plurality of DERs, each site controller to determine a set of control values for a set of control variables to effectuate a change to the corresponding one or more DERs, wherein each site controller can determine a site impact of the corresponding one or more DERs operating during a given time period in accordance with one or more constraints and one or more cost elements associated with operation of the corresponding one or more DERs; receive an aggregation opportunity to participate in a response event, the aggregation opportunity specifying a requested power level production over a period of time of the response event;', 'provide an engagement rule set for each site controller of the plurality of site controllers, the engagement rule set defining parameters for the corresponding one or more DERs to participate in the response event;', 'receive an impact representation from each site controller of the plurality of site controllers, the ...

TRANSFORMERLESS POWER CONVERSION

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for non-isolated power conversion. In one aspect, a method includes generating first and second rectified outputs using a rectifier with a first input and a second input connected respectively to a first and second output of a power source, capacitively coupling the first and second rectified outputs to a neutral, generating first and second AC outputs from the first and second rectified outputs, and capacitively coupling the first and second AC outputs to the neutral. Other embodiments of this aspect include corresponding systems, apparatus, and computer programs, configured to perform the actions of the methods, encoded on computer storage devices. 1. A system , comprising: a first phase input terminal to receive a first phase output of a power source;', 'a second phase input terminal to receive a second phase output of the power source;', 'a first rectifier output terminal and a second rectifier output terminal; and', 'rectifier circuity that rectifies the first phase output and the second phase output of the power source to generate respective first and second rectified outputs on the first and second rectifier output terminals;', 'a rectifier neutral to receive a power source neutral;, 'a rectifier includinga first capacitor connected between the rectifier neutral and the first rectifier output terminal;a second capacitor connected between the rectifier neutral and the second rectifier output terminal; a first inverter input terminal connected to the first rectifier output terminal;', 'a second inverter input terminal connected to the second rectifier output terminal;', 'a first inverter output terminal and a second inverter output terminal; and', 'inverter circuity that inverts the first and second rectified output to generate respective first and second AC outputs on the first and second inverter output terminals wherein the first and second AC outputs are ...

GENERATOR DISPATCHING OR LOAD SHEDDING CONTROL METHOD AND SYSTEM FOR MICROGRID APPLICATIONS

A microgrid power generation system includes a plurality of generators having a plurality of different rated capacities and a plurality of distribution nodes, at least some of the distribution nodes being powered by the generators. A grid is formed by the distribution nodes, the grid includes a system frequency. A plurality of loads are powered by the grid through the distribution nodes, the loads have a power demand. A processor includes a plurality of efficiency bands, each of the efficiency bands being for a corresponding one of the generators and including a plurality of generator switching points based upon droop of the system frequency and the power demand of the loads. The processor is structured to operate the generators and the loads under transient conditions based upon the efficiency bands. 1. A load shedding control method for a microgrid , said method comprising:employing a plurality of generators;employing a plurality of distribution nodes;powering at least some of said distribution nodes by said generators;forming a grid by said distribution nodes, said grid including a system frequency;powering a plurality of loads by said grid through said distribution nodes; andmeasuring the system frequency of said grid, comparing the measured system frequency to a frequency threshold, and responsively shedding by a processor a number of said loads from said grid or prohibiting additional load to said grid.2. The load shedding control method of further comprising: not shedding said loads for transient frequency dips of the system frequency from which the microgrid will recover,', 'immediately shedding a number of said loads in order to prevent stalling of a number of said generators, and', 'permitting the measured system frequency to be less than the frequency threshold for a predetermined period of time before a number of said loads are shed., 'providing at least one of3. The load shedding control method of further comprising:defining an input value equal to the ...

Systems and methods for mitigating harmonics in electrical systems by using active and passive filtering techniques

Systems and methods of the present disclosure involve passive, hybrid, and active filtering configurations to mitigate current harmonics for various electrical loads. One hybrid filtering configuration is medium voltage (MV) active filtering using a DC-DC converter and a multi-level inverter, and low voltage (LV) passive filtering. Another hybrid filtering configuration is MV passive filtering and LV active filtering using a two-level inverter. An active filtering configuration includes both MV and LV active filtering. The present disclosure also features power distribution unit (PDU) transformers electrically coupled to respective power supplies on the LV side of an electrical system. Each PDU transformer includes primary coils in a delta configuration and secondary coils in a wye configuration. The secondary coils are in series with respective leakage inductance coils. The secondary coils and the leakage inductance coils are integrated together into a single unit or module.

ENERGY MANAGEMENT SYSTEM AND ENERGY MANAGEMENT METHOD

An energy management system and an energy management method enable an improvement of the balance between power supply and demand. A storage battery () is connected to a power line () that transmits outside power. A storage battery controller () receives a control signal indicating a reduced use period during which the consumption of the outside power by a consumer apparatus () connected to the power line () is to be reduced, acquires an index value that has a correlation with the demand for outside power, and on the basis of the control signal and the index value, adjusts the amount of charging/discharging of the storage battery (). 1. An energy management system comprising:a storage battery that is connected to a power line that transmits outside electric power; anda control unit that receives a control signal that indicates reduced use periods in which the amount of consumption of said outside electric power by a load that is connected to said power line is reduced, further, acquires an index value that has a correlation with the demand for said outside electric power, and adjusts an amount of charging/discharging that is to be charged or discharged in said storage battery on the basis of said control signal and said index value.2. The energy management system as set forth in claim 1 , wherein:said control unit causes said storage battery to charge during use periods other than said reduced use periods and causes said storage battery to discharge at a discharging amount that is based on said index value during said reduced use periods.3. The energy management system as set forth in claim 2 , wherein:said control unit increases said discharging amount according to the degree that said demand increases based on said index value during said reduced use periods.4. The energy management system as set forth in claim 1 , wherein:said control unit acquires, as said index value, outside air temperature or an amount of power consumption that is consumed in a prescribed ...

Method for controlling power grid frequency of multiple energy storage systems, and system therefor

The present invention relates to a power management system (PMS) for multiple energy storage systems (ESS) that is for integrated management of the system having multiple ESS for controlling a frequency and having a hierarchical control structure. The PMS for ESS comprises: a plurality of ESS; a local management system (LMS) for managing one or more ESS of the plurality of ESS for each local unit; an ESS Controller (ESSC) for general management of the LMS, judging a state of the LMS and determining an output value of one or more ESS in the LMS, and transmitting the determined output value to the respective ESS; and a PMS for general management of the entire system comprising the plurality of ESS, the LMS and the ESSC, judging the state of the entire system and participating in a power grid frequency control market through a grid operator contract, controlling the output of the LMS, and adjusting a control parameter for output control.

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, STORAGE MEDIUM, PORTABLE ELECTRIC GENERATOR, AND RENTAL SYSTEM

An information processing apparatus comprises an acquisition unit configured to acquire information according to the usage circumstances of the portable electric generator; an estimation unit configured to estimate a type of an electrical device that is connected, based on a measurement result with respect to a voltage and a current when the portable electric generator supplied electric power that is included in the information according to the usage circumstances; and a calculation unit configured to calculate a rental fee associated with an electric power amount supplied by the portable electric generator at the rental destination, using a billing coefficient corresponding to an electrical device estimated by the estimation unit, and the measurement result. 1. An information processing apparatus managing usage circumstances at a rental destination of a portable electric generator configured to supply electric power to a detachably connected electrical device , the apparatus comprising:an acquisition unit configured to acquire information according to the usage circumstances of the portable electric generator;an estimation unit configured to estimate a type of an electrical device that is connected, based on a measurement result with respect to a voltage and a current when the portable electric generator supplied electric power that is included in the information according to the usage circumstances; anda calculation unit configured to calculate a rental fee associated with an electric power amount supplied by the portable electric generator at the rental destination, using a billing coefficient corresponding to an electrical device estimated by the estimation unit, and the measurement result.2. The information processing apparatus according to claim 1 , whereinthe portable electric generator includes a communication unit configured to perform a radio communication with the information processing apparatus; andthe acquisition unit receives the information according ...

Grid Forming Power Supply Plant and Method

The present invention relates to a method and plant of operating a grid forming power supply plant based on both a renewable energy, such as based on wind energy, solar energy, hydro energy, wave energy, and a carbon based energy, such as carbon based fuel. The grid includes a power input connection from a renewable power supply system and a power input connection from an carbon fuel engine based generator set. The generator set includes an engine for converting the carbon-based energy into motion energy, a generator, such as an alternator, for converting the motion energy into electrical energy, and a clutch for coupling and uncoupling of the engine with the generator. The system also includes a power buffer, such as a battery, subsystem for providing short term grid forming capacity and a plant grid forming controller for controlling grid parameters by means of controlling steps of a method. The plant grid forming controller includes interaction means for interacting with a control unit of the renewable power supply system, interaction means for interacting with a power buffer control unit, and interaction means for interaction with a control unit of the generator set. 1. A method for operating a grid forming power supply plant based on both a renewable energy , such as based on wind energy , solar energy , hydro energy , wave energy , and a carbon based energy , such as carbon based fuel , the grid forming power supply system comprising:a power input connection from a renewable power supply system, an engine for converting the carbon-based energy into motion energy,', 'a generator, such as an alternator, for converting the motion energy into electrical energy,', 'and a clutch for coupling and uncoupling of the engine with the generator,, 'a power input connection from a carbon fuel engine based generator set, the generator set comprisinga power buffer, such as comprising a battery, subsystem for providing short term grid forming capacity,plant grid forming ...

GRID-TIED VARIABLE FREQUENCY FACILITY

A micro grid system comprises a secondary energy source and a power controller. The secondary energy source is associated with the micro grid, and the secondary energy source is configured to generate first DC power signal. The power controller is in communication with the secondary energy source and an electric grid, and configured to receive first AC power signal from the electric grid and the first DC power signal from the secondary energy source and to output a second AC power signal to loads in communication with the power controller. The power controller comprises a frequency converter configured to change frequency of the second AC power signal, a processor, and a memory configured to store instructions that, when executed, cause the processor to control the frequency converter to change the frequency of the second AC power signal. 1. A micro grid system for use with a micro grid , the micro grid system comprising:a secondary energy source associated with the micro grid, the secondary energy source being configured to generate first DC power signal; anda power controller in communication with the secondary energy source and an electric grid, and configured to receive first AC power signal from the electric grid and the first DC power signal from the secondary energy source and to output a second AC power signal to loads in communication with the power controller, the power controller comprising a frequency converter configured to change frequency of the second AC power signal, a processor, and a memory configured to store instructions that, when executed, cause the processor to control the frequency converter to change the frequency of the second AC power signal.2. The micro grid system of claim 1 , wherein the power controller is configured to obtain information related to at least one of current claim 1 , voltage claim 1 , frequency and harmonic contents of the second AC power signal and to control the frequency converter to change the frequency of the ...

MVDC LINK-POWERED BATTERY CHARGERS AND OPERATION THEREOF

One embodiment is a system comprising a medium voltage direct current (MVDC) link electrically coupling a first AC-DC converter and a second AC-DC converter. The first AC-DC converter is electrically coupled with a first alternating current (AC) feeder. The second AC-DC converter electrically coupled with a second AC feeder. A battery charger electrically coupled with the MVDC link via a converterless connection. A first electronic controller is operatively coupled with the first AC-DC converter. A second electronic controller is operatively coupled with the second AC-DC converter. During operation of the battery charger to charge a battery the first electronic controller is configured to control power flow between the first AC feeder and the second AC feeder and the second electronic controller is configured to control the voltage of the MVDC link. 1. A system comprising:a medium voltage direct current (MVDC) link electrically coupling a first AC-DC converter and a second AC-DC converter, the first AC-DC converter coupled with first distribution voltage alternating current (DVAC) power system circuitry, the second AC-DC converter coupled with second DVAC power system circuitry;a battery charger providing a converterless electrical connection between the MVDC link and a battery connector;a first electronic controller operatively coupled with the first AC-DC converter; anda second electronic controller operatively coupled with the second AC-DC converter;wherein during operation of the battery charger to charge a battery electrically coupled with the battery charger the first electronic controller is configured to control active power flow between the first DVAC power system circuitry and the second DVAC power system circuitry and the second electronic controller is configured to control voltage of the MVDC link to charge the battery.2. The system of wherein the first electronic controller and the second electronic controller operate concurrently and independently ...

MANAGING CONSUMER ENERGY DEMAND

A computer-implemented method, according to one embodiment, includes: receiving an energy consumption profile which spans multiple intervals in a period of time, and predicting a net energy demand of a consumer system over the period of time. Moreover, a first multiple is determined which, when applied to the received energy consumption profile, produces an updated energy consumption profile which corresponds to an amount of energy that is capable of satisfying the predicted net energy demand of the consumer system. A greatest amount of underprediction is estimated. A greatest amount of overprediction is also estimated. Furthermore, an initial state of an energy storage device electrically coupled to the consumer system is computed according to the updated energy consumption profile. The initial state of the energy storage device is also based on a second multiple applied to each of the greatest amount of underprediction, and the greatest amount of overprediction. 1. A computer-implemented method , comprising:receiving an energy consumption profile which spans multiple intervals in a period of time;predicting a net energy demand of a consumer system over the period of time;determining a first multiple which, when applied to the received energy consumption profile, produces an updated energy consumption profile which corresponds to an amount of energy that is capable of satisfying the predicted net energy demand of the consumer system;estimating a greatest amount of underprediction by which the predicted net energy demand of the consumer system underpredicts an actual net energy demand of the consumer system over the period of time;estimating a greatest amount of overprediction by which the predicted net energy demand of the consumer system overpredicts the actual net energy demand of the consumer system over the period of time; andcomputing an initial state of an energy storage device electrically coupled to the consumer system which is able to satisfy the actual ...

SUPPORTING ELECTRICAL UTILITY PERFORMANCE WITH DISPATCHABLE DISTRIBUTED ENERGY RESOURCES

Distributed energy resources are validated by dispatching a distributed energy resources individually in known ambient conditions and monitoring the particular effect of dispatch to then establish a database of performance for multiple different distributed energy resources. The distributed energy resources can be permanently monitored to further build up this database and to verify that the distributed energy resource 1 s performing consistent with its validation or other expected performance. Distributed energy resources of a slow responding variety and a fast responding variety can be paired together and dispatched together, so that the paired fast responding and slow responding distributed energy resources mimic a large fast responding distributed energy resource. The benefits of a high capacity fast responding distributed energy resource is thus provided, such as for the load shedding and grid support benefits thereof. 1: A method for supporting electric utility performance with dispatchable distributed energy resources , including the steps of:identifying a plurality of dispatchable energy resources, the dispatchable energy resources each receiving or supplying power with a common electric utility power supply system;coupling the distributed energy resources to the electric utility in a manner providing ongoing monitoring of distributed energy resource performance;dispatching at least one of the distributed energy resources when needed for electric utility support;monitoring distributed energy resource performance after said dispatching step; andproviding incentives based on distributed energy resource performance from said monitoring step.2: The method of including the further step of evaluating at least one of the distributed energy resources before said dispatching step to determine an expected benefit to be provided to the electric utility when the distributed energy resource is dispatched.3: The method of wherein said evaluating step includes the steps of ...

Computer-implemented Method of Providing Technical Sizing Parameters of an Energy Supply System, Computer Program Product for Providing Such Technical Sizing Parameters, and Computer System for Providing Such an Energy Supply System

The present invention relates to a computer-implemented method of providing technical sizing parameters for an energy supply system supplying electrical energy to an installation connected to a public grid subject to potential service interruptions, said computer-implemented method comprising the steps of: ⋅entering electricity consumption chronology (S) of said installation; ⋅entering photovoltaic production capacity limits and energy storage unit capacity limits (S); ⋅estimating a ratio (S) of self-sufficiency or of self-consumption, or of internal rate of return; ⋅displaying (S) a plurality of energy supply system configurations on user interface means; wherein each configuration is associated to a sensitivity parameter, said sensitivity parameter enabling to determine the optimized technical sizing parameters of the energy supply system regarding the reliability of the public grid. The present invention further relates to a computer program product aimed at being executed on a computer system to implement this computer-implemented method. 2887. The method of claim 1 , characterized in that it further comprises a step of entering technical parameters of the at least one thermal engine driven electricity generation unit (S) claim 1 , said step (S) being performed just after the step of entering specific equipment boundary condition (S).3105. The method of claim 2 , wherein the sensitivity parameter further takes into account an evolution cost of the propellant for the thermal energy driven electricity generation unit ().41889. The method according to any one of the preceding claims claim 2 , wherein the method () further comprises a step of entering technical parameters of the energy storage unit (S′) claim 2 , said step (S′) being performed before the step of entering production capacity limits and energy storage capacity limits (S).5103103. The method of claim 4 , wherein it computes the cycle number of the energy storage unit () to determine the degradation of ...

Method and apparatus for optimizing a hybrid power system with respect to long-term characteristics by online optimization, and real-time forecasts, prediction or processing

An apparatus optimizes a hybrid power system with respect to long-term characteristics of the hybrid power system. The apparatus includes a real-time controller of the hybrid power system and a processor. The processor cooperates with the real-time controller and is structured to input current measurements of information from the hybrid power system and hybrid dynamics information including continuous dynamics and discrete time dynamics that model the hybrid power system. The processor provides online optimization of the hybrid power system based upon the input, and outputs a power flow reference and a number of switch controls to the real-time controller based upon the online optimization. The processor is further structured to provide at least one of: real-time forecasts or real-time prediction of future information operatively associated with the hybrid power system as part of the input, and real-time processing of the online optimization.

REGULATING DEVICE CONTROL SYSTEM, REGULATING DEVICE CONTROL METHOD, AND RECORDING MEDIUM

A regulating-device-control system for controlling the operation of regulating devices for regulating the balance between electric power supply and demand includes: memory means storing, for each regulating device, correlation information expressing correlation of a state of the regulating device, an amount of power allotted to the regulating device, and an amount of variability in performance of the regulating device; determination means receiving state information that expresses the state of each regulating device and electric power information that expresses an amount of regulated power required for regulating the balance between electric power supply and demand, and, based on the correlation information, the state information, and the electric power information, determining the amount of electric power to be allotted to each regulating device such that the total value of the amount of variability in performance of each of the regulating devices is minimized under conditions in which the state of each regulating device is the state expressed by the state information and the total value of the amount of power to be allotted to the regulating devices is the amount of regulated power; and control means controlling the operation of each regulating device based on the determination result of the determination means. 1. A regulating device control system that controls the operation of a plurality of regulating devices for regulating a balance between electric power supply and demand in an electric power system , comprising:a memory unit that stores, for each of said regulating devices, correlation information that represents correlation of a state of the regulating device, an amount of electric power to be allotted to the regulating device, and an amount of variability in performance of the regulating device;a determination unit that receives state information that indicates the state of each regulating device and electric power information that indicates an amount of ...

HYBRID POWER PLANT FOR IMPROVED EFFICIENCY AND DYNAMIC PERFORMANCE

A hybrid power plant is characterized by a substantially constant load on generators regardless of momentary swings in power load. Short changes in power load are accommodated by DC components such as capacitors, batteries, resistors, or a combination thereof. Resistors are used to consume power when loads in the power plant are generating excess power. Capacitors are used to store and deliver power when the loads in the power plant demand additional power. Reducing rapid changes in power load as seen by the generators allows the generators to operate at higher efficiencies and with reduced emissions. Additionally, power plants employing combinations of generators, loads, and energy storage devices have increased dynamic performance. 1. An apparatus , comprising:an AC power source coupled to an AC bus;a bidirectional AC-to-DC converter coupled to the AC bus and a DC bus;a first AC load coupled to the AC bus; andan active power compensation system coupled to the DC bus, wherein the active power compensation system comprises an energy storage device coupled to the DC bus through a switch.2. The apparatus of claim 1 , further comprising a summation block on the AC bus coupled to the AC power source claim 1 , the AC load claim 1 , and the bidirectional AC-to-DC converter claim 1 , wherein the active power compensation system is configured to maintain an approximately constant load on the AC power source through the summation block.3. The apparatus of claim 1 , further comprising:a DC-to-AC converter coupled to the DC bus; anda second AC load coupled to the DC bus through the DC-to-AC converter.4. The apparatus of claim 3 , wherein the DC-to-AC converter is bidirectional to allow power regeneration of the motor to provide power to the DC bus.5. The apparatus of claim 1 , wherein the switch comprises a DC-to-DC converter.6. The apparatus of claim 1 , wherein the energy storage device comprises at least one of an ultracapacitor claim 1 , a capacitor claim 1 , a battery ...

Energy storage for hybrid mobile microgrid

An electrical storage system comprising a climate controlled enclosure containing a plurality of battery packs, and an inverter; a coolant system, wherein the coolant system runs through a chiller; and a switchgear, wherein the switchgear has a connector to provide energy to a microgrid.

Power control system

A power control system includes: a power generation device; and a storage battery that receives and stores power from a commercial power system or the power generation device. When power supply from the commercial power system is stopped, constant power is output from the power generation device, and the power is supplied to a first load, and surplus power thereof is supplied to the storage battery, and when a power storage rate of the storage battery is equal to or greater than a predetermined value, the surplus power is supplied to and consumed by a second load.

Power management of server installations

This document relates to power management of server installations. One example determines a current generator state of a generator in a server installation and an energy storage state of an energy storage device in the server installation. The example also selectively discharges the energy storage device and adaptively adjust workload performed by a server in the server installation based on the current generator state and the energy storage state.

ENERGY STORAGE DEVICE, AND SERVER AND METHOD FOR CONTROLLING THE SAME

Energy storage devices, servers, and methods for controlling the same are disclosed. The energy storage device can include at least one battery pack, a network interface configured to exchange data with a server, and a connector that receives alternating current (AC) power from an internal power network or outputs AC power to the internal power network. Energy storage device can also include a power converter configured to convert the AC power from the internal power network into direct current (DC) power based on the information about the power to store when information about power to store is received from the server, or, convert DC power stored in the battery pack into AC power based on the information about the power to output when information about power to output to the internal power network is received from the server. Accordingly, energy may be more efficiently stored. 120-. (canceled)22. The server according to claim 21 , wherein the network interface receives a pairing request signal from the energy storage device and transmits a pairing response signal to the energy storage device.23. The server according to claim 21 , wherein the network interface receives information about power stored claim 21 , storable or additionally storable in the energy storage device from the energy storage device.24. The server according to claim 21 , wherein:the processor performs a control operation to allocate different radio channels to a plurality of energy storage devices; andthe network interface transmits the information about the calculated power to store or the information about the calculated power to output to each of the energy storage devices over a corresponding one of the different radio channels.25. The server according to claim 21 , wherein the network interface receives the information about the renewable power generated by the renewable energy generation device claim 21 , the information about the commercial power supplied to the internal power network and ...

SYSTEM AND METHOD FOR CONTROLLING FREQUENCY

Provided are a system and a method for controlling a frequency. The system for controlling the frequency includes: at least one power supplying unit generating power; at least one systematic unit consuming the power generated from the power supplying unit; at least one standby power unit storing the power generated from the power supplying unit and including at least one storage device; and at least one grid unit connecting the power supplying unit, the systematic unit, and the standby power unit to one another and controlling a frequency of the systematic unit. 1. A system for controlling a frequency , the system comprising:at least one power supplying unit generating power;at least one systematic unit consuming the power generated from the power supplying unit;at least one standby power unit storing the power generated from the power supplying unit and including at least one storage device; andat least one grid unit connecting the power supplying unit, the systematic unit, and the standby power unit to one another and controlling a frequency of power flowing to the systematic unit.2. The system of claim 1 , wherein the standby power unit includes at least one storage device claim 1 , the at least one storage device being discharged when a frequency supplied to the systematic unit is decreased below a predetermined value and being charged when the frequency supplied to the systematic unit is increased above the predetermined value.3. The system of claim 1 , wherein the standby power unit includes a controlling unit claim 1 , the controlling unit determining a use priority of the storage device using a state of charge (SOC) of the storage device.4. A method for controlling a frequency by the system for controlling the frequency of claim 1 , the method comprising:an operation of calculating a first SOC calculating the respective state of charge (SOC) of the storage devices constituting the standby power unit;an operation of determining a first SOC reference ...

TRANSIENT POWER STABILIZATION DEVICE WITH ACTIVE AND REACTIVE POWER CONTROL

A system includes a converter configured to be coupled between an energy storage unit and a grid and a control circuit configured to detect frequency and voltage variations of the grid and to responsively cause the converter to transfer power and reactive components to and/or from the grid. The control circuit may implement a power control loop having an inner frequency control loop and a reactive component control loop having an inner voltage control loop. The control circuit may provide feedforward from the inner frequency control loop to the inner voltage control loop to inhibit reactive component transfer in response to a voltage variation deviation of the grid due to a power transfer between the energy storage unit and the grid. 1. A system comprising:a converter configured to be coupled between an energy storage unit and a grid; anda control circuit configured to detect frequency and voltage variations of the grid and to responsively cause the converter to transfer power and reactive components to and/or from the grid.2. The system of claim 1 , wherein the control circuit implements a power control loop having an inner frequency control loop and a reactive component control loop having an inner voltage control loop.3. The system of claim 2 , wherein the control circuit provides feedforward from the inner frequency control loop to the inner voltage control loop to inhibit reactive component transfer in response to a voltage variation deviation of the grid due to a power transfer between the energy storage unit and the grid.4. The system of claim 2 , wherein the power and reactive component loops are configured to drive power and reactive transfers by the converter to substantially zero when a frequency and a voltage of the grid meet predetermined criteria.5. The system of claim 2 , wherein the control circuit is configured to provide power flow from the grid to the energy storage unit by varying a power reference provided to the power control loop when the ...

ELECTRIC POWER CONTROL SYSTEM, ELECTRIC POWER CONTROL METHOD, AND PROGRAM

An electric power control system for controlling supply and consumption of electric power in a system power supply, a storage battery and an electric power load, said electric power control system including: an estimated value correction unit configured to obtain a difference between a past power control estimated value and a past actual performance value, and to shift a power control estimated value obtained as a result of estimation in a predetermined period to an extent corresponding to said difference, thereby correcting the power control estimated value, wherein said past power control estimated value is a value obtained as a result of estimation performed in a past time relative to said predetermined period, and said past actual performance value is a value obtained as an actual result in the past time; and a power control unit configured to control supply and consumption of electric power in the system power supply, the storage battery, and the electric power load, based on the power control estimated value corrected by the estimated value correction unit. 1. An electric power control system for controlling supply and consumption of electric power in a system power supply , a storage battery and an electric power load , said electric power control system comprising:an estimated value correction unit configured to obtain a difference between a past power control estimated value and a past actual performance value, and to shift a power control estimated value obtained as a result of estimation in a predetermined period to an extent corresponding to said difference, thereby correcting the power control estimated value, wherein said past power control estimated value is a value obtained as a result of estimation performed in a past time relative to said predetermined period, and said past actual performance value is a value obtained as an actual result in the past time; anda power control unit configured to control supply and consumption of electric power in the ...

Bidirectional dc-dc converter, power conditioner, and distributed power system

A low-voltage circuit in a bidirectional DC-DC converter converts output AC power from a high-voltage circuit to DC power to charge a smoothing reactor and discharge the smoothing reactor, and includes an active snubber circuit including switching elements and each having a backward diode and a snubber capacitor. The snubber capacitor of the active snubber circuit has its one end connected to a drain end of the switching elements and has its other end connected to a node between a center tap of a high-frequency transformer and a smoothing reactor.

CONTROLLABLE DISTRIBUTED ENERGY APPLIANCES AND DEVICES

Various embodiments provide appliances and electronic devices and methods implemented in such appliances and electronic devices to improve Demand Response (DR) capabilities and responses while mitigating interrupts to services provided to consumers. Various embodiments improve on DR systems by equipping a variety of electronic devices and appliances with integrated internal energy storage (e.g., battery), control and communication capabilities that enable responding to DR events by splitting power drawn by the devices or appliances between the grid and the integrated internal energy storage. Some embodiments further improve on conventional DR systems by enabling utilities to recharge batteries in electronic devices and appliances when power on the grid exceeds demand, thereby enabling utilities to increase demand when required in order to better balance power demands with power generation. Such may support the grid by increasing or decreasing load on the grid in response to grid frequency. 1. A method for controlling energy usage of an appliance with an integral internal energy store by a processor within a control device , comprising:receiving a demand response signal from a utility; controlling the appliance to reduce power drawn from the electrical grid; and', 'providing power to the appliance from an integrated internal energy store such that the appliance is partially powered by the electrical grid and partially powered by the integrated internal energy store;, 'in response to receiving the demand response signaldetermining a grid frequency; andsupplying power onto the electrical grid at a correct frequency by drawing power from the integrated internal energy store in response to determining that the grid frequency is exhibiting an under-frequency event.2. The method of claim 1 , further comprising:receiving electricity rate information from the utility;determining whether electricity rates are favorable; and connecting the appliance to the grid if not already ...

BATTERY MANAGING DEVICE AND BATTERY ENERGY STORING SYSTEM

Provided is a battery managing device that stores surplus power provided from a system via a power managing device, and controls the charging and discharging of a battery formed of multiple battery modules which supply stored power to the system. The battery managing device includes: a switch block that connects the multiple battery modules to the power managing device; a charging circuit that charges the battery by means of the power input from the power managing device; a smoothing circuit that discharges or charges the battery according to the real-time power deficit/surplus state of the system; and a control circuit that controls the operation of the switching block, the charging circuit, and the smoothing circuit. 1. A battery management system or BMS for storing surplus power provided from a power grid via a power control system or PCS and controlling charging and discharging a battery with multiple battery modules for supplying stored power to the power grid , comprising:a switch block for connecting the multiple battery modules to the PCS;a charging circuit for charging the battery with power inputted from the PCS;a smoothing circuit for charging or discharging the battery depending on a real-time state of power shortage or surplus of the power grid; anda control circuit for controlling operations of the switch block, the charging circuit, and the smoothing circuit;wherein the control circuit virtually divides a capacity of the battery into a capacity for a battery for storing energy and that for a battery for smoothing.2. The BMS of claim 1 , wherein the control circuit conducts a smoothing operation by adding energy stored in the battery for storing energy to the battery for smoothing at a time of peak in power demand claim 1 , andwhile preferentially storing surplus power in the battery for storing energy at an off-peak time, when the battery for storing energy is fully charged, it stores the power in the battery for smoothing.3. The BMS of claim 1 , ...

ENERGY STORAGE SYSTEM AND METHOD FOR CONTROLLING AN ENERGY STORAGE SYSTEM

An energy storage system is disclosed. The energy storage system includes at least one energy store, a power convertor for converting between a DC voltage present at the at least one energy store and an AC voltage, a transformer for transforming between the AC voltage and a line voltage of an energy supply network, and a control device for controlling the energy storage system. The transformer is switchable for setting a transformation ratio for converting between the AC voltage and the line voltage, wherein the control device is configured to set the transformation ratio of the transformer depending on the DC voltage present at the at least one energy store. 1. An energy storage system , comprisingat least one energy store;a power convertor for converting between a DC voltage present at the at least one energy store and an AC voltage;a transformer for transforming between the AC voltage and a line voltage of an energy supply network; anda control device for controlling the energy storage system, wherein the transformer is switchable for setting a transformation ratio for converting between the AC voltage and the line voltage, wherein the control device is configured to set the transformation ratio of the transformer depending on the DC voltage present at the at least one energy store.2. The energy storage system as claimed in claim 1 , wherein the transformer is switchable in a stepwise manner for setting the transformation ratio.3. The energy storage system as claimed in claim 1 , wherein the transformer has a secondary winding claim 1 , at which the AC voltage is present claim 1 , a primary winding claim 1 , at which the line voltage is present claim 1 , and a switching device with a plurality of secondary taps at the secondary winding and/or with a plurality of primary taps at the primary winding.4. The energy storage system as claimed in claim 3 , the switching device is switchable for tapping the secondary winding via one of the secondary taps and/or the ...

HIERARCHICAL DISTRIBUTED VOLTAGE REGULATION

Embodiments of the disclosure provide for hierarchically distributed voltage regulation and power flow optimization in a power distribution network. According to one embodiment, a regional coordinator system may determine power flow for an autonomous grid (AG) representing a portion of the distribution network based ona set of voltage parameters from nodes in the AG. The set of voltage parameters my include a current voltage magnitude. The regional coordinator system may provide, to a central controller system of the distribution network, one or more power flow parameters based on the determined power flow for the AG. 1. A method comprising:determining, by a regional coordinator system comprising at least one processor, based at least in part on a set of voltage parameters from a plurality of nodes in a distribution network, power flow for an autonomous grid (AG) in the distribution network, the AG including the plurality of nodes;determining, by the regional coordinator system, based on the power flow for the AG, one or more power flow parameters; andoutputting, by the regional coordinator system, for use by a central controller system, the one or more power flow parameters.2. The method of claim 1 , further comprising:receiving, by the regional coordinator system, one or more regional parameters for the AG, the one or more regional parameters being determined at least in part by the central controller system based at least in part on power flow parameters for AGs in the distribution network; anddetermining, based at least in part on the one or more regional parameters and a topology of the AG, an updated power flow for the AG; andcausing, by the regional coordinator system, at least one Distributed Energy Resource (DER) in the AG to modify operation based on the updated power flow for the AG.3. The method of claim 1 , further comprising:receiving, by the central controller system, the one or more power flow parameters;determining, based at least in part on power ...

Method and Apparatus for Storing and Depleting Energy

A method to control storage into and depletion from multiple energy storage devices. The method enables an operative connection between the energy storage devices and respective power converters. The energy storage devices are connectable across respective first terminals of the power converters. At the second terminals of the power converter, a common reference is set which may be a current reference or a voltage reference. An energy storage fraction is determined respectively for the energy storage devices. A voltage conversion ratio is maintained individually based on the energy storage fraction. The energy storage devices are stored individually with multiple variable rates of energy storage through the first terminals. The energy storage is complete for the energy storage devices substantially at a common end time responsive to the common reference. 1. A method comprising:transferring, by using a plurality of power converters, power from a plurality of energy storage devices to a load such that the plurality of energy storage devices reach predetermined depletion values at a common discharging end time,wherein the plurality of power converters each have first terminals that connect the plurality of power converters one-to-one to the plurality of energy storage devices, andwherein the plurality of power converters each have second terminals connected to the load.2. The method of claim 1 , wherein at least one energy storage device claim 1 , of the plurality of energy storage devices claim 1 , have a different charge storage capacity than at least another energy storage device claim 1 , of the plurality of energy storage devices.3. The method of claim 1 , further comprising:regulating, responsive to a common voltage reference or a common current reference, a plurality of variable discharge rates respectively of the plurality of power converters during discharging of the plurality of energy storage devices.4. The method of claim 3 , wherein the plurality of power ...

System and method for controlling a power storage device

The present invention relates to a local control system (6) configured to define a charge or discharge command made to a power storage device (5) on the basis of a charge or discharge instruction, sent by an overall control system (7), and the instantaneous power used by the power-using devices (4), such that the instantaneous power used by the power using devices (4) is always greater than the discharge power of the power storage device (5), so as to guarantee that the power stored by the power storage device (5) is not re-injected into the power distribution network (3).

Energy Management Method for an Energy System and Energy System

The present invention relates to an energy management method for an energy system () in a building. The energy system () comprises a plurality of uncontrollable energy consumers (HH), at least one controllable energy consumer (WP), an energy storage device (BAT), a net connection point (NAP) through which energy can be drawn from the net and/or fed into the net, and a feedback-control or control device (EMS) which is designed to feedback-control or control the at least one controllable energy consumer (WP) and the energy storage device (BAT). The plurality of uncontrollable energy consumers (HH) is configured to draw energy from the net or from the energy storage device (BAT). The method comprises the following steps: detecting a current state of charge (SOC) of the energy store device (BAT), defining a period of time (ΔT) during which the uncontrollable energy consumers (HH) are supplied with energy from the energy storage device, determining a limit value (SOC) of the state of charge of the energy storage device (BAT) on the basis of a determined minimum energy demand of the plurality of uncontrollable energy consumers (HH) up to the time of charging (T), operating the at least one controllable energy consumer (WP) with energy from the energy storage device (BAT) if the current charge state (SOC) of the energy storage device (BAT) is greater than the determined limit value (SOC) of the charge state and operating the at least one controllable energy consumer (WP) with energy from the net if the current charge state (SOC) of the energy storage device (BAT) is less than or equal to the determined limit value (SOC) of the charge state. 111. An energy management method for an energy system () in a building , the energy system () comprising:a plurality of uncontrollable energy consumers (HH),at least one controllable energy consumer (WP),an energy storage device (BAT),a net connection point (NAP) through which energy can be drawn from the net and/or fed into the net, ...

BATTERY POWER SOURCE

A method and apparatus for a power distribution system, includes providing, from a power source having a set of dischargeable power storage devices connected by way of selectable connections, a power supply to a voltage output, and switchably connecting the voltage output to a set of power outputs having different electrical characteristics. 1. A power supply , comprising:a set of power storage units arranged in series, each power storage unit having a respective direct current (DC) dischargeable power storage device, a first selectable connection configured to enable a voltage output of the respective power storage device, and a second selectable connection configured to enable bypassing the voltage output of the respective power storage device;a controller module communicatively connected with the set of first selectable connections and the set of second selectable connections and configured to selectively enable at least a subset of the first selectable connections or a subset of the second selectable connections; anda voltage output for the set of power storage units configured to be switchably connected with a set of power outputs, wherein the set of power outputs have different electrical characteristics.2. The power supply of wherein at least one of the set of power outputs is a DC power output.3. The power supply of wherein at least one of the set of power outputs is an alternating current (AC) power output.4. The power supply of wherein the controller module is configured to selectively enable at least a subset of the first selectable connections or a subset of the second selectable connections claim 3 , and wherein the selectively enabling emulates an AC waveform at the power output.5. The power supply of claim 3 , wherein the set of power storage units includes a first set of power storage units arranged in series and connected with the voltage output claim 3 , the first set of power storage units having a positive voltage DC dischargeable power storage ...

ELECTRIC VEHICLE DISTRIBUTED INTELLIGENCE

The present disclosure provides system and methods for electric vehicle distributed intelligence. A system may determine scheduled charging times and scheduled charging locations to charge electric vehicles. The scheduled charging locations may correspond to charging stations geographical distributed throughout a power grid. The system may receive parameters related to power grid components configured to affect distribution of power. The system may forecast a power demand for charging the electric vehicles at the scheduled charging times and scheduled charging locations. The system may determine that a power demand to charge the electric vehicles is greater or less than power made available by the power grid components at the charging stations. The system may cause power to be reallocated among the power grid components in response to determination that the power demand to charge the electric vehicles is greater or less than power made available by the power grid components. 1. A method , comprising:determining scheduled charging times and scheduled charging locations to charge electric vehicles, the scheduled charging locations corresponding to charging stations geographical distributed throughout a power grid;receiving parameters related to power grid components configured to affect distribution of power to at least one of the charging stations, the parameters indicative of power made available by the power grid components;forecasting a power demand for charging the electric vehicles at the scheduled charging times and scheduled charging locations;determining that the power demand to charge the electric vehicles is greater or less than power made available by the power grid components at the charging stations; andcausing power to be reallocated among the power grid components in response to determination that the power demand to charge the electric vehicles is greater or less than power made available by the power grid components.2. The method of claim 1 , wherein ...

Method and Device for Operating Power System, and Rechargeable-Battery Management Device

The purpose of the present invention is to provide a method and device for operating a power system, and a rechargeable-battery management device, that extract maximum performance from rechargeable batteries and use said batteries evenly while taking into consideration cost and the operation of the batteries. In order to solve said problem, in this method for operating a power system provided with a plurality of rechargeable-battery devices and a plurality of electric generators, the amount of power that a rechargeable battery available during a scheduled time period on a scheduled date will be able to supply is determined, an economic-dispatch calculation including the determined amount of power that the aforementioned rechargeable battery will be able to supply is performed for the power system, and said rechargeable battery is used to supply power during the scheduled time period on the scheduled date.

Distributed energy storage and power quality control in photovoltaic arrays

A solar electric system comprises photovoltaic elements having integrated energy storage and control, ideally on each PV-panel. The energy storage media may be primary or secondary cylindrical cells interconnected into a battery and/or an array of capacitors (or super-capacitors) and are accompanied by an electronic control circuit which may perform a variety of functions, including but not limited to power quality control, load following, pulse powering, active line transient suppression, local sensing, remote reporting, wireless or wired communications allowing two way programmable control through local or remote operation. The operation of the system may yield direct current or with the integration of bidirectional micro-inverters create distributed alternating current generation enhanced with energy storage and control two way energy flows between the solar system and the grid.

Control device, control system, control method and program

A prediction value calculator calculates a prediction value of an electricity fee based on the amount of electric power supplied from a commercial electric power source to electric equipment within an electricity fee calculation period. A selector selects, as a first-stage control, either one control of an electric power saving control for the electric equipment and a charge-discharge control in which the electric power supplied from the commercial electric power source is stored in a storage battery in a first time slot and the electric power stored in the storage battery is supplied to the electric equipment in a second time slot in which the unit cost of the electric power supplied from the commercial electric power source is greater than that in the first time slot. A controller executes the first-stage control selected by the selector when the prediction value calculated by the prediction value calculator is greater than a targeted value of the electricity fee.

Power generation device utilizing renewable natural energy

A power generation device using renewable energy includes: a storage battery configured to temporarily store electric power generated through renewable energy; and a plurality of electric power generators along with a motor, the plurality of electric power generators configured to be caused, by the motor driven through electric power output from the storage battery, to rotate so as to further generate electric power, of which one portion is charged into the storage buttery and the other portion is output to an interconnection system as consumed electric power.

Island grid power supply apparatus and methods using energy storage for transient stabilization

A system includes at least one generator coupled to an island grid, at least one energy storage unit and at least one converter coupled to the at least one energy storage unit and configured to be coupled to the island grid. The system further includes a control circuit configured to cause the at least one converter to transfer power between the at least one energy storage unit and the grid responsive to a change in a load on the island grid to maintain operation of the at least one generator at a predetermined operating point. The at least one generator may include a control system configured to match generator output to the load and the control circuit may be configured to maintain the control system of the at least one generator within a predetermined dynamic response capability limit responsive to the change in the load.

CONTROL OF POWER CONVERTER BASED ON DYNAMIC CONSTRAINT FACTORS

A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter, and control circuitry configured to select a constraint factor from a plurality of different constraint factors based on at least one of an input voltage to the power converter and a power level available to the power converter, and control the power converter in accordance with the constraint factor. 1. A portable electronic device , comprising:one or more components;a battery;a power converter configured to electrically couple to and receive power from the battery and further configured to supply electrical energy to the one or more components; and select a constraint factor from a plurality of different constraint factors based on at least one of an input voltage to the power converter and a power level available to the power converter; and', 'control the power converter in accordance with the constraint factor., 'control circuitry configured to2. The portable electronic device of claim 1 , wherein:the control circuitry is configured to select the constraint factor based on a voltage level available from the battery.3. The portable electronic device of claim 2 , wherein the control circuitry models the voltage level available from the battery as a time-varying voltage source in series with an equivalent resistance.4. The portable electronic device of claim 2 , wherein:a plurality of constraint regions are defined for different ranges of the voltage level available from the battery; andthe control circuitry is configured to select the constraint factor based on a constraint region of the plurality of constraint regions corresponding to the voltage level available from the battery.5. The portable electronic device of claim 4 , wherein a first constraint region of the plurality of constraint regions is associated with a first ...

POWER SYSTEM

A power system includes a plurality of storage battery facilities constructed to be interconnected to an electric power grid, and a multi-storage battery control apparatus configured to control the plurality of storage battery facilities, the plurality of storage battery facilities include a first storage battery facility including at least one first storage battery, and a second storage battery facility including at least one second storage battery, the first storage battery is different from the second storage battery in type, and the multi-storage battery control apparatus is constructed to selectively use the first storage battery facility or the second storage battery facility in accordance with a plurality of different types of application. 18-. (canceled)9: A power system comprising:a plurality of storage battery facilities; anda multi-storage battery control apparatus configured to control the plurality of storage battery facilities,wherein the plurality of storage battery facilities comprise a first storage battery facility including at least one first storage battery, and a second storage battery facility including at least one second storage battery, the first storage battery being different from the second storage battery in type,the multi-storage battery control apparatus is constructed to selectively use the first storage battery facility or the second storage battery facility in accordance with a plurality of different types of charge-discharge application,the multi-storage battery control apparatus is constructed to respectively calculate a first charge-discharge amount for first charge-discharge application and a second charge-discharge amount for second charge-discharge application different from the first charge-discharge application, control charge-discharge of the first storage battery facility on a basis of the first charge-discharge amount, and control charge-discharge of the second storage battery facility on a basis of the second charge- ...

MAGNETIC GENERATOR AND ELECTRIC POWER GENERATION SYSTEM COMPRISING SUCH A GENERATOR

The invention relates to a magnetic generator () comprising at least one rotary drive means () having an axle associated with an actuator system, the actuator system comprising at least one induction rotor () associated with the axle of the rotary drive means (), the induction rotor () comprising magnetic inductor structures (), the induction rotor () being associated with at least one induced rotor () comprising induced magnetic structures () configured so as to cooperate with the inductive magnetic structures () so that the inductive magnetic structures () driven by the induction rotor () cause the induced structures () and the induced rotor () to rotate, said induced rotor () being associated with an electric power generation means (). 11252565786657669. A magnetic generator () comprising at least one rotary drive means () having an axle associated with an actuator system , the actuator system comprising at least one induction rotor () associated with the axle of the rotary drive means () , the induction rotor () comprising magnetic inductor structures () , the induction rotor () being associated with at least one induced rotor () comprising induced magnetic structures () configured so as to cooperate with the inductive magnetic structures () so that the inductive magnetic structures () driven by the induction rotor () cause the induced structures () and the induced rotor () to rotate , said induced rotor () being associated with an electric power generation means ().214478214ab. The magnetic generator () according claim 1 , characterized in that at least one axle ( claim 1 , ) of at least one rotor ( claim 1 , ) or motor () is mounted on the rest of the generator () by means of magnetic stops ().3178878779. The magnetic generator () according to claim 1 , comprising at least two mutually associated induced rotors () comprising induced magnetic structures () that are configured so as to cooperate with one another so that the induced magnetic structures () of at ...

Dc-side soft switching device for converter and switching method using the same

A DC-side soft switching device for a converter includes a battery, a bus capacitor, a first relay switch, a first resistor, a second relay switch, a second resistor, and a third resistor. The first relay switch is arranged between an anode of the battery and the bus capacitor. The first resistor is electrically connected in parallel to the first relay switch. The second relay switch is arranged between a cathode of the battery and the bus capacitor. The second resistor is electrically connected in parallel to the second relay switch. The third resistor is electrically connected in parallel to the bus capacitor.

Energy Storage System for Renewable Energy Source

An energy storage system for use in a renewable energy power system is provided. More particularly, an energy storage system can be coupled to the DC bus of a power converter in a renewable energy power system. A switching power supply can be coupled between the energy storage device and the DC bus of the power converter. The switching power supply can include a bi-directional resonant DC to DC converter. The bi-directional resonant converter can include a plurality of switching elements, a resonant circuit coupled to the at least one switching element, and a filtering circuit coupled to the resonant circuit. The bi-directional resonant converter can be configured to accommodate power flow in at least two directions. 1. A renewable energy power system , comprising:a power converter having a DC bus;an energy storage system coupled to the DC bus of the power converter, the energy storage system comprising an energy storage device and a switching power supply coupled between the energy storage device and the DC bus of the power converter; anda control system configured to operate the energy storage system in a first mode where power flows in a first direction from the DC bus to the energy storage device and in a second mode where power flows in a second direction from the energy storage device to the DC bus;wherein the switching power supply comprises a bi-directional resonant DC to DC power converter, the bi-directional resonant DC to DC power converter configured to accommodate bi-directional power flow between the energy storage device and the DC bus.2. The renewable energy system of claim 1 , wherein the bi-directional resonant DC to DC power converter comprises a plurality of switching elements claim 1 , a resonant circuit coupled to the plurality of switching elements claim 1 , and a filtering circuit coupled to the at least one resonant circuit.3. The renewable energy system of claim 2 , wherein the plurality of switching elements comprise a first switching ...

Clustered power generator architecture

Multiple dispatchable resources such as energy storage systems, generators, and curtailable loads are used to fulfill electricity usage control instructions by implementing multiple different sets of dispatch instructions. The sets of dispatch instructions vary based on individual status characteristics and aggregate status characteristics of the dispatchable resources in order to use the resources optimally. The resources may in some instances be prioritized according to their status characteristics in order to improve response efficiency, improve cost-effectiveness, reduce errors and flawed fulfillment, and improve the ability of the resources to respond to different kinds of electricity usage control instructions over time.

Method for supplying electrical power

A method for supplying electrical power to an electrical supply grid from at least one wind power installation is provided. The supply of electrical power is controlled such that changes in the supplied electrical power are limited based on at least one limit gradient. The at least one limit gradient specifies a magnitude of a maximum change of the supplied electrical power. The least one limit gradient is set based on a property and/or an instantaneous state of the supply grid.