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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 82346. Отображено 100.
05-01-2012 дата публикации

Method and system for controlling power to an electrically powered device

Номер: US20120001488A1
Автор: Greg Puschnigg, Michael Krummey
Принадлежит: GREEN POWER Tech LLC

A system and method for remotely controlling power to an electrically powered device in a simple and efficient manner is disclosed herein. The system preferably comprises an apparatus, an electrically-powered device and a controller. The apparatus preferably comprises a cord, an alternating current outlet socket, an alternating current input plug, a latching relay, a processor and a transceiver. The system preferably uses a WiFi communication signal to transmit commands from the remote controller to the apparatus.

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Номер записи: 1
05-01-2012 дата публикации

Four-switch step-down storageless converter

Номер: US20120001612A1
Автор: Slobodan Cuk
Принадлежит: Cuks LLC

A four-switch step-down storageless DC-DC converter is provided having simultaneously ultra high efficiency of over 99% in an ultra compact size, while also providing a regulation and maintaining fast transient response while in regulation. Because of its storageless feature it is ideal for demanding computer applications, such as VRM (Voltage Regulator Modules), with extremely fast step-load load current change requirements and tight output voltage regulation requiring ultra low output ripple voltages during the transients.

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Номер записи: 2
10-05-2011 дата публикации

Автономный согласованный инвертор с резонансной коммутацией

Номер: RU0000104400U1
Автор: Евгений Михайлович Силкин
Принадлежит: Евгений Михайлович Силкин

Изобретение направлено на повышение надежности работы автономного согласованного инвертора с резонансной коммутацией. Указанный технический результат достигается тем, что в автономном согласованном инверторе с резонансной коммутацией, содержащем подключенный к входным выводам инвертора через магнитосвязанные дроссели 1, 2 фильтра, включенные согласно, однофазный мост на управляемых вентилях 3-6 с встречно-параллельными диодами 7-10, выводы постоянного тока моста зашунтированы конденсатором 11 фильтра, выводы переменного тока моста зашунтированы последовательной цепью из резистора 12 и конденсатора 13 и соединены с выходными выводами инвертора через последовательные цепи из коммутирующих дросселей 14, дросселей насыщения 15 и, соответственно, 16, 17, коммутирующие дроссели магнитосвязаны и включены согласно, выходные выводы инвертора зашунтированы компенсирующим конденсатором 18. Нагрузка 19 подключена к выходным выводам инвертора. 1 илл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 104 400 (13) U1 (51) МПК H02M 7/5387 (2007.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ТИТУЛЬНЫЙ ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2011101983/07, 19.01.2011 (24) Дата начала отсчета срока действия патента: 19.01.2011 (73) Патентообладатель(и): Силкин Евгений Михайлович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 19.01.2011 (72) Автор(ы): Силкин Евгений Михайлович (RU) (45) Опубликовано: 10.05.2011 Бюл. № 13 1 0 4 4 0 0 R U (57) Формула полезной модели Автономный согласованный инвертор с резонансной коммутацией, содержащий подключенный к входным выводам инвертора через магнитосвязанные дроссели фильтра включенные согласно однофазный мост на управляемых вентилях с встречнопараллельными диодами, выводы постоянного тока моста зашунтированы конденсатором фильтра, выводы переменного тока моста зашунтированы последовательной цепью из резистора и конденсатора и соединены с выходными выводами инвертора через последовательные цепи из ...

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Номер записи: 3
19-01-2012 дата публикации

Uninterruptible power supply system

Номер: US20120013193A1
Автор: Eduardo Kazuhide Sato, Masahiro Kinoshita, Tatsuaki Amboh, Yushin Yamamoto
Принадлежит: Toshiba Mitsubishi Electric Industrial Systems Corp

In an uninterruptible power supply system, control sections of three uninterruptible power supply units are connected to one another by communication cables to configure one integrated control unit. The integrated control unit brings three switches into conduction if a bias feeding mode is selected by one arbitrary operation section and brings three switches into conduction if an inverter feeding mode is selected. Therefore, there is no need to separately provide an operation section and a control section for operating and controlling all of the uninterruptible power supply units.

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Номер записи: 4
19-01-2012 дата публикации

Adaptive on-time control for power factor correction stage light load efficiency

Номер: US20120014148A1
Автор: Chuanyun Wang, Fred C. Lee, Ming Xu, QIAN LI
Принадлежит: Virginia Tech Intellectual Properties Inc

Light load efficiency of a power factor correction circuit is improved by adaptive on-time control and providing for selection between a continuous conduction mode and a discontinuous conduction mode wherein the discontinuous conduction mode increases time between switching pulses controlling connection of a cyclically varying voltage to a filter/inductor that delivers a desired DC voltage and thus can greatly reduce the switching frequency at light loads where switching frequency related losses dominate efficiency. The mode for controlling switching is preferably selected for each switching pulse within a half cycle of the cyclically varying input voltage. A multi-phase embodiment allows cancellation of EMI noise at harmonics of the switching frequency and adaptive change of phase angle allows for cancellation of dominant higher order harmonics as switching frequency is reduced.

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Номер записи: 5
19-01-2012 дата публикации

Method for controlling switching power unit

Номер: US20120014152A1
Автор: Takashi Kawai, Yoshihiro Nakamura
Принадлежит: Minebea Co Ltd

There is provided a method for controlling a switching power unit that converts AC input voltages of an AC source into a DC voltages while improving a power-factor of the AC input voltages, the switching power unit comprising an AC/DC converter circuit that is composed of a power-factor correction unit and a current resonance converter unit wherein at least a part of switching elements of the current resonance converter unit is shared with switching elements of the power-factor correction unit, wherein around timing that polarities of the AC source are switched between a positive half cycle and a negative half cycle, ON-and-OFF control of the switching elements are performed as that high frequency voltages that are applied to a primary winding of a high frequency transformer which is a part of the current resonance converter unit are to be symmetrical in a positive and negative relation.

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Номер записи: 6
19-01-2012 дата публикации

Carbon emission tracker and tracking system

Номер: US20120016605A1
Автор: Yu-Lung Lee
Принадлежит: Powertech Industrial Co Ltd

A carbon emission tracker is disclosed. The carbon emission tracker includes a main body, a power input interface, a power output interface, a power detecting unit, a communication unit, a memory unit, and a processing unit. The power detecting unit is configured to detect an electricity usage of an electrical appliance. The processing unit is configured to aggregate power consumption data over a time period and to store the power consumption data for the time period to the memory unit. The processing unit transmits the power consumption data of the memory unit to a data center through the communication unit. The power consumption data further includes identification data of the electrical appliance.

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Номер записи: 7
26-01-2012 дата публикации

Constant on-time switching regulator, and control method and on-time calculation circuit therefor

Номер: US20120019219A1
Автор: Chih-Hao Yang, Li-Wen Fang, Ting-Jung Tai
Принадлежит: RICHTEK TECHNOLOGY CORP

The present invention discloses a constant on-time switching regulator, a control method therefor, and an on-time calculation circuit for calculating an on-time period of a constant on-time switching regulator. The on-time calculation circuit calculates on-time according to practical conditions. It includes: a driver gate receiving a gate signal of a power switch in a switching regulator, the driver gate operating between high and low levels of a first reference voltage and ground; a low pass filter receiving an output from the driver gate and generating a second reference voltage, a ratio between the second reference voltage and the first reference voltage being substantially the same as a duty ratio of the gate signal; and an on-time generator comparing the second reference voltage with a ramp signal to determine an on-time of the power switch.

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Номер записи: 8
26-01-2012 дата публикации

Predictive synchronous rectification controller, switching power converter with predictive synchronous rectification controller and controlling method thereof

Номер: US20120020123A1
Автор: Ta-Ching Hsu
Принадлежит: Niko Semiconductor Co Ltd

A predictive synchronous rectification controller for controlling at least one synchronous rectification switch is provided. The synchronous rectification controller has a ramp generator, a peak sampling unit, and an output control unit. The ramp generator receives a synchronous signal and generates a ramp signal accordingly. The peak sampling unit generates a predicted reference voltage signal by retrieving a peak voltage of the ramp signal. The output control unit compares the ramp signal with the predicted reference voltage signal to generate a synchronous rectification control signal to control a conducting state of the switch.

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Номер записи: 9
26-01-2012 дата публикации

Power system with power saving function

Номер: US20120020127A1
Автор: Chun-Sheng Hsueh, Min-Hua Hsu, Yao-Hwa Chen
Принадлежит: ASUSTeK Computer Inc

A power system includes an electronic device having a host and a state generator and an adaptor. The host is capable of presenting a plurality of states and generating a plurality of state signals corresponding to the states, and the state generator is electrically connected to the host, receives the state signals and generates a control signal accordingly. The adaptor is connected to an AC voltage and has a state receiving terminal to receive the control signal. The adaptor is capable of generating a DC voltage to the electronic device according to the control signal.

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Номер записи: 10
26-01-2012 дата публикации

Power apparatus and method of supplying power

Номер: US20120020131A1
Автор: Chih-Ping YU, Chun-Kong Chan
Принадлежит: Lien Chang Electronic Enterprise Co Ltd

The present invention provides a power apparatus, which includes a switch unit, a bleeder resistor, a filter, a rectifier, a power factor corrector, an output capacitor, a rectifying diode, a surge absorber, a main power supply, and a standby power supply. Moreover, the AC power charges to the output capacitor by means of the rectifying diode and the surge arrester, such that the standby power supply generates a standby power while the switch unit is off. Furthermore, the AC power charges to the output capacitor through the switch unit, the bleeder resistor, the filter, the rectifier and the power factor corrector, such that the main power supply generates a main power while the switch unit is on. The present invention further provides a method of supplying power.

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Номер записи: 11
26-01-2012 дата публикации

Wind turbine with a controller configured to manage resonant effects

Номер: US20120022714A1
Автор: Eng Kian Kenneth Sng
Принадлежит: Vestas Wind Systems AS

A method and apparatus of operating a controller usable for operating a wind turbine is provided. The wind turbine includes a voltage converter being connectable to a power grid via a filter arrangement. The method includes determining a line voltage and adding the determined line voltage to the output of the voltage converter with a time delay. The time delay is adjusted such that resonant effects occurring at the filter arrangement are decreased.

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Номер записи: 12
02-02-2012 дата публикации

Air conditioner and method for controlling the same

Номер: US20120023977A1
Автор: Jeonghyun LIM, Juyoung Min, Namwoo Kwon, Suyoung Kang, Younggeul Kim
Принадлежит: LG ELECTRONICS INC

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.

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Номер записи: 13
09-02-2012 дата публикации

Switching power source apparatus

Номер: US20120032661A1
Автор: Masaru Nakamura
Принадлежит: Sanken Electric Co Ltd

A switching power source apparatus includes a high-side MOSFET 11 connected to an input voltage, a ramp signal generator 18 to generate a ramp signal in synchronization with a switching frequency of the high-side MOSFET 11, an amplitude signal generator to generate an amplitude signal Comp corresponding to an amplitude of the ramp signal, a superposing circuit 3 to generate a second ramp signal having a positive inclination corresponding to the amplitude and frequency of the ramp signal and provide a superposed signal by superposing the second ramp signal on a first reference voltage, a controller 1 to control the ON timing and ON width of the high-side MOSFET 11, and a sudden heavy load detector 23 to detect if light load changes to heavy load, and if detects such a change, widen the ON width of the high-side MOSFET 11.

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Номер записи: 14
16-02-2012 дата публикации

Electronic correction unit

Номер: US20120038221A1
Автор: Arni Bergmann Petursson, Jon Mar Halldorsson
Принадлежит: RAF EHF

The present invention relates to a device for power factor correction and electrical wide band filtering in electrical systems for reducing considerably voltages of frequencies higher than 110 Hz on power systems rated for 10 Hz to 60 Hz and to improve power factor by injecting reactive power into the system. The device of the present invention provides a combination of inductors and capacitors which effectively corrects the power factor and filters out voltages of high frequencies.

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Номер записи: 15
16-02-2012 дата публикации

System and Method for Powering an Information Handling System in Multiple Power States

Номер: US20120038339A1
Автор: Guangyong Zhu, Joseph A. Clegg, Merle J. Wood
Принадлежит: Individual

Power is supplied to an information handling system chipset with a single voltage regulator having dual phases. A first phase of the voltage regulator provides power to a low power state power rail in an independent mode to support a low power state, such as a suspend or hibernate state. A second phase of the voltage regulator provides power to a run power state power rail in combination with the first phase by activation of a switch, such as a MOSFET load switch, that connects the low power state power rail and the run power state power rail. Voltage sensed from both power rails is applied to control voltage output so that the run power state power rail is maintained within more precise constraints than the low power state power rail.

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Номер записи: 16
16-02-2012 дата публикации

Dynamic control loop for switching regulators

Номер: US20120038340A1
Автор: Alan Roth, Eric Soenen, Justin GAITHER, Justin Shi
Принадлежит: Taiwan Semiconductor Manufacturing Co TSMC Ltd

Some embodiments regard a method of controlling a regulator having an input voltage and an output voltage, comprising: turning on a first driver; determining a duration ratio having a first time period over the first time period and a second time period; the first time period and the second time period indicating a duration when the first driver and a second driver is on, respectively; generating a second voltage level for the reference voltage based on the duration ratio and a ripple voltage that is a difference between a high threshold voltage and a low threshold voltage; turning off the first driver and turning on the second driver based on a relationship between the second voltage level and a voltage level of the output voltage; turning off the second driver when a current flowing through a node of the output voltage reaches a pre-determined level; and generating a change in the first time period based on the duration ratio and a voltage difference between a peak of the output voltage and the high threshold voltage.

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Номер записи: 17
16-02-2012 дата публикации

Systems and methods for off-time control in a voltage converter

Номер: US20120039093A1
Автор: Jin Liang, John R. Wiggenhorn, Lin Sheng, Rais K. Miftakhutdinov, Steven Tumasz
Принадлежит: Texas Instruments Inc

Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an OFF time. The voltage converter further includes an OFF time controller that is operable to adjust the OFF time based at least in part on a load current traversing the second winding.

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Номер записи: 18
16-02-2012 дата публикации

Emergency frequency load shedding scheme

Номер: US20120041612A1
Автор: Nicholas C. Abi-Samra
Принадлежит: Electric Power Research Institute Inc

A load shedding system and method for controlling imbalances in a power system includes a signal generator adapted to generate a signal representative of a local system, and a modifying circuit adapted to adjust set frequencies. The system also includes a processing circuit adapted to process data received from the signal generator and modifying circuit and set load shedding priorities for the local system based on the processed data.

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Номер записи: 19
23-02-2012 дата публикации

Switching power source apparatus

Номер: US20120043949A1
Автор: Masaru Nakamura
Принадлежит: Sanken Electric Co Ltd

A switching power source apparatus includes a high-side MOSFET 11 , a ramp generator 18 to generate a ramp signal, an amplitude signal generator (second feedback controller 2 ) to generate an amplitude signal Comp corresponding to an amplitude of the ramp signal, and a first feedback controller 1 to control the ON timing of the high-side MOSFET 11 according to the ramp signal, a feedback signal FB, and a first reference voltage REF and control the ON width of the high-side MOSFET 11 according to the amplitude signal Comp. The ramp generator 18 controls the inclination of the ramp signal so that the ramp signal maintains a predetermined amplitude. The first feedback controller 1 controls the ON width of the high-side MOSFET 11 so that the ON width does not become narrower than a predetermined limit value.

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Номер записи: 20
23-02-2012 дата публикации

Control device for the voltage- absent switching of a switching element of a voltage converter

Номер: US20120044719A1
Автор: Alexander Ehret, Martin Saliternig, Peter Maisel
Принадлежит: Conti Temic Microelectronic GmbH

In a control device ( 28 ) for the voltage-absent switching of at least one switching element ( 18 - 24 ) of a voltage converter ( 10 ), a detection element ( 30 ) detects a resonance voltage between the switching element ( 18 - 24 ) and the transformer unit ( 14 ). A control unit ( 34 ) generates a control signal for the switching element ( 18 - 24 ) as a function of a value of the detected resonance voltage and outputs the control signal to the switching element ( 18 - 24 ). A ZVS path in the control unit switches the switching element at the right time. A bypass path ensures a continuous switching of the switching element if the resonance signal fails to be emitted.

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Номер записи: 21
23-02-2012 дата публикации

Method and apparatus for transmitting a frame in a wireless ran system

Номер: US20120044925A1
Автор: Bong Hoe Kim, Byeong Woo Kang, Dae Won Lee, Yong Ho Seok, Yu Jin Noh
Принадлежит: LG ELECTRONICS INC

There is provided a method and apparatus for transmitting a frame which is performed by a transmission STA in a WLAN system. The method of transmitting a frame according to the present invention includes generating an MAC Protocol Data Unit (MPDU) to be transmitted to a target station, generating a PLCP Protocol Data Unit (PPDU) by attaching a Physical Layer Convergence Procedure (PLCP) header to the MPDU, and transmitting the PPDU to the target station. The PLCP header comprises a partial Association ID (AID) of the target station.

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Номер записи: 22
01-03-2012 дата публикации

Switching regulator

Номер: US20120049828A1
Автор: Hirohisa Abe, Kiyohito Hara
Принадлежит: Ricoh Co Ltd

A switching regulator converts an input voltage into an output voltage, wherein an operation of the switching regulator is stopped by an enable signal in a standby status. The switching regulator includes a switching transistor performing switching in accordance with a control signal; an inductor that is charged with the input voltage by the switching transistor; a rectifying transistor including a bipolar transistor discharging the inductor when the switching transistor is turned off; a control circuit unit controlling the switching transistor such that a voltage proportional to the output voltage becomes equal to a reference voltage; and a rectifying transistor control circuit unit turning off the rectifying transistor in a cut-off state upon reception of the enable signal indicating the standby status or connecting a base and a collector of the rectifying transistor upon reception of the enable signal indicating a normal operation so that a diode is formed.

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Номер записи: 23
08-03-2012 дата публикации

Energy management device and method

Номер: US20120059530A1
Автор: Shang-Jue Ding, YI LUO
Принадлежит: Hon Hai Precision Industry Co Ltd, Hongfujin Precision Industry Shenzhen Co Ltd

An energy management device manages a plurality of monitored devices distributed in a plurality of monitored areas. The energy management device determines whether a current time of each monitored area is during a monitored time of the energy management device. The energy management device acquires an area identifier and a body presence information from each of the monitored areas, and determines whether one or more monitored areas are under control and without body presence. If one or more monitored areas are under control and without body presence, the energy management device transmits one or more power-off commands to turn off the monitored devices located in the one or more monitored areas.

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Номер записи: 24
15-03-2012 дата публикации

System for supplementation of appliance standby mode with internal power source

Номер: US20120061375A1
Автор: Lawrence Michael Portaro, Paul Bryan Cadima
Принадлежит: General Electric Co

A system is provided for supplementing the power usage of an appliance with an internal power source, such as e.g., a battery, in order to limit the overall power consumption of the appliance while in standby mode. The system can allow for replenishing the internal power source when the appliance is not in standby mode or even when in standby mode if such will not exceed the external power source consumption limit. In the event the internal power source is not available or is reaching depletion, the system can provide for disabling electronic features of the appliance in order to maintain the external power source consumption below the desired limit.

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Номер записи: 25
15-03-2012 дата публикации

Electronic device and charging method thereof

Номер: US20120062183A1
Автор: Margaret-Peyi Lin
Принадлежит: Wistron Corp

An electronic device and a charging method thereof are provided, wherein the electronic device has a battery and is connected to a power supply. In the charging method, it is determined whether a current time of the electronic device is in a specific time interval. During the specific time interval, it is determined whether a remaining power of the battery is more than a lower bound of power. If yes, the battery is stopped form being charged and the battery is solely used to keep the electronic device working; otherwise, the power supply is controlled and an intermittence charging procedure is used to charge the battery in accordance with the lower bound of power. While not in the specific time interval, a normal charging procedure is used to charge the battery. By switching between the two different charging procedures, purposes of charging effectively and lowering electricity bills are both achieved.

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Номер записи: 26
22-03-2012 дата публикации

Semiconductor integrated circuit

Номер: US20120068539A1
Автор: Masayoshi SHIOTANI
Принадлежит: Panasonic Corp

A constantly power-ON domain and a standby-time power OFF domain are included on the same chip, and the constantly power-ON domain includes: a shutoff control circuit shutting off a signal inputted and outputted between the constantly power-ON domain and the standby-time power OFF domain when the first power source is ON and the second power source is OFF; and a shutoff control circuit outputting a first control signal indicating that shutoff of an emergent shutoff control circuit unit is to be enabled or disabled, the standby-time power OFF domain includes the emergent shutoff control circuit unit shutting off, based on the first control signal from the shutoff control circuit, the signal inputted between the emergent shutoff control circuit unit and the constantly power-ON domain.

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Номер записи: 27
22-03-2012 дата публикации

Method for lowering power loss and circuit

Номер: US20120069609A1
Автор: Basso Christophe, Jean-Paul Louvel
Принадлежит: Individual

A method and circuit for suppressing a bias current and decreasing power consumption. A current suppression circuit is coupled to a circuit element, which is capable of conducting the bias current. Coupling the current suppression circuit to the circuit element forms a node. In one operating mode, the current suppression circuit applies a voltage to the node in response to a heavy load. In another operating mode, the current suppression circuit lowers the voltage at the node in response to a light load or no load. Lowering the voltage at the node decreases the flow of bias current through the circuit element thereby lowering power loss.

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Номер записи: 28
22-03-2012 дата публикации

Power distribution

Номер: US20120072043A1
Автор: Klaus Arzig
Принадлежит: SIEMENS AG

A power distribution system has a field device level, a hierarchically higher station level, and an instrumentation and control level hierarchically higher than the station level. A function of field devices belonging to the field level, a function of station devices belonging to the station level, and a function of instrumentation and control devices belonging to the instrumentation and control level are defined by parameters. A plurality of separate computing devices are connected to each other by a communication network and form a distributed computer system. The field devices, the station devices, and the instrumentation and control devices are connected to the distributed computer system or are formed by individual or a plurality of computer devices. The parameters for determining the function of the devices are distributed over two different computer devices. The devices access the parameters via the communication network.

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Номер записи: 29
29-03-2012 дата публикации

Supply circuit for supplying a switch circuit

Номер: US20120074791A1
Автор: Carsten Deppe, Mathias Wendt
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

To improve energy efficiencies, supply circuits ( 1 ) for supplying switch circuits ( 2 ) have first supply modes for receiving first amounts of input power from sources ( 7 ) and providing first amounts of output power to output circuits ( 5 ) comprising control parts ( 3 ) of the switch circuits ( 2 ) and have second supply modes for receiving second amounts of input power and providing second amounts of output power. The first amounts of output power are larger than the second amounts of output power. The second amounts of input power are larger than zero and smaller than amounts of switch power necessary for operating the switch circuits ( 2 ). The switch circuits ( 2 ) may comprise relays for switching loads ( 8 ). The first amounts of input power may arrive via main contacts of the relays. Switches ( 47 ) may switch output signal levels. The relays may be bistable relays.

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Номер записи: 30
29-03-2012 дата публикации

Modular energy load management

Номер: US20120078431A1
Автор: Norman A. Weatherhead
Принадлежит: Rockwell Automation Technologies Inc

Systems and methods are provided that integrate a modular load management solution within a general control architecture. One or more load modules deployed within a controller act as interlocks to energy consuming field devices or machines fed by an energy distribution system within a facility. One or more feeder modules deployed within the controller collect energy supply data from an energy source or feeder on the energy distribution system. The load and feeder modules publish their energy demand and supply data to a virtual energy bus, which facilitates exchange of energy data between the load and feeder modules. The load modules, feeder modules, and virtual energy bus generate multiple views of the facility's overall energy supply and demand status based on the energy data shared between the components, and perform automated load management for the energy distribution system based on the collected data.

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Номер записи: 31
05-04-2012 дата публикации

Electronic device and method for managing current of the electronic device

Номер: US20120080946A1
Автор: Jian Peng
Принадлежит: Hon Hai Precision Industry Co Ltd, Hongfujin Precision Industry Shenzhen Co Ltd

A method for managing current of an electronic device initializes a control signal of a baseboard management controller (BMC) of the electronic device to be a low level before the electronic device is powered on, maintains the control signal under a low-level status for a specified time upon the condition that a power on signal of the electronic device is received, and rotates the electronic fan with a low current and a low speed. The method further sets the control signal to be a high level when the specified time elapses to rotate the electronic fan with a normal current and a normal speed, and sets the control signal to be the low level upon the condition that a power off signal of the electronic device is received.

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Номер записи: 32
05-04-2012 дата публикации

Method and Apparatus for Charging Batteries

Номер: US20120081068A1
Автор: Kenneth Scott Seethaler, Shigefumi Odaohhara, Tin-Lup Wong
Принадлежит: Lenovo Singapore Pte Ltd

A charge system is disclosed. A charge system includes a switching device and a controller. The switching device performs switching of a DC input voltage at a predetermined switching frequency to generate an output voltage, and the output voltage being utilized for charging said battery. The controller allows the switching device to operate at a first switching frequency immediately after starting of charge and at a second switching frequency when a frequency changing condition holds. The second switching frequency is higher than that of first switching frequency.

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Номер записи: 33
05-04-2012 дата публикации

Arrangement For Protecting Equipment Of A Power System

Номер: US20120081817A1
Автор: Zoran Gajic
Принадлежит: Individual

An arrangement for protecting equipment of an AC electrical power system comprises first means configured to measure the frequency of the current and voltage at at least one location in the electrical power system along an interconnection between two theoretical electric machines of an equivalent two machine system. Fourth means are configured to use the values of the frequency of the current and voltage measured to determine whether a power swing has occurred and if an occurrence of a power swing has been determined determine whether the measuring location is located on a motor side or a generator side of a potential pole slip electrical centre along said interconnection, the electrical centre being defined as the location where the voltage becomes zero during a pole slip, and send this information further to third means for use in a control for protecting equipment of the electrical power system.

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Номер записи: 34
12-04-2012 дата публикации

Circuit system having standby power supply unit and circuit system layout method

Номер: US20120086274A1
Автор: Ching-Feng Hsieh, Huang-Chin Chang, Sung-Ta Tsai
Принадлежит: Askey Computer Corp

A circuit system layout method for laying out a circuit system has a standby power supply unit. The circuit system includes a core circuit set and a non-core circuit set and operates on power supplied by a power source. The core circuit set is still enabled to finalize a temporary process with the power supplied by the standby power supply unit upon an unexpected interruption of the power supplied by the power source. The core circuit set is connected to an energy storing element for storing and discharging the power, and connected to a one-way element for ensuring that the power stored in the energy storing element is supplied to the core circuit set only. The core circuit set performs the temporary process even when the power source does not enable the circuit system to operate. The circuit system is further provided.

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Номер записи: 35
12-04-2012 дата публикации

Switching Power Supply Circuit with Reduced Total Harmonic Distortion

Номер: US20120086411A1
Автор: Laszlo A. Takacs
Принадлежит: Energy Focus Inc

A switching power supply circuit has a control circuit for current-mode on-off control of a primary switch connected to an inductor in a voltage boost topology for operation in boundary-conduction mode. The time at which the primary switch is opened is determined by magnitude of current flowing through the primary switch together with the instantaneous voltage present on an AC input to the power supply circuit. The time at which the primary switch is closed is determined by demagnetization of the inductor. An improvement to the foregoing switching power supply circuit comprises a maximum-on-time enforcement circuit to limit the maximum possible primary switch on-time to a predetermined maximum period of time. The enforcement circuit provides a signal to the control circuit to cause termination of the primary switch on-state if and only if the primary switch has been turned on for more than the predetermined maximum period of time.

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Номер записи: 36
12-04-2012 дата публикации

System and method for controlling access to a source of electrical power

Номер: US20120086546A1
Автор: Nicolas Jones, Steven Montgomery
Принадлежит: 2D2C Inc

A system for controlling access to a source of electrical power. The system includes a readable access information device with access information that is associated with an electrical load device electrically connectable to a receptacle, a switch device for connecting and disconnecting the receptacle to and from the source of electrical power, and a reader for reading the access information from the readable access information device, and determining whether preselected criteria are satisfied by the access information. If the preselected criteria are satisfied, the receptacle is connected to the source of electrical power, and the electrical load device is connectable to the source of electrical power via the receptacle. If any one or more of the preselected criteria are unsatisfied, then the receptacle is disconnected from the source of electrical power.

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Номер записи: 37
12-04-2012 дата публикации

Ac-dc converter

Номер: US20120087155A1
Автор: Chung-Hei Poon, Kwong-Ming Ching, Pak-Chuen Tang
Принадлежит: Delta Electronics Inc

An AC-DC converter is disclosed. The AC-DC converter includes an OFF-time clamping circuit. The OFF time clamping circuit outputs a triggering signal when a main switch circuit of the AC-DC converter is switched from ON state to OFF state. When an input AC voltage is too small, and a terminal voltage at a first current-conducting terminal of the main switch circuit of the AC-DC converter is lower than a specific voltage such that a switching control circuit can not turn on the main switch circuit again, the switching control circuit can still turn on the main switch circuit again by the triggering signal. Therefore, the OFF time of the main switch circuit is clamped. The switching control circuit can control the switching operation of the main switch circuit.

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Номер записи: 38
19-04-2012 дата публикации

Field device for a process automation system having an intrinsically safe power supply device

Номер: US20120091809A1
Автор: Harald U. Müller, Yannick MARET
Принадлежит: ABB TECHNOLOGY AG

The disclosure relates to a field device of a process automation system, having at least one first intrinsically safe power supply unit, which provides locally stored electrical energy in an integrated storage element for supplying power to an electronics unit for process control. To supply power to intrinsically safe field devices from locally stored electrical energy in line with demand, it is proposed that in addition, at least one additional intrinsically safe power supply unit is integrated therein, which is fed by a power generation unit providing locally renewable electrical energy.

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Номер записи: 39
19-04-2012 дата публикации

System and Method for Thermal Protection in a Power System

Номер: US20120091815A1
Автор: George Richards, III
Принадлежит: Dell Products LP

In accordance with embodiments of the present disclosure, systems and methods for thermal protection in a power system may be provided. In accordance with certain embodiments of the present disclosure, a method for thermal protection in a power system having a plurality of power modules selectively enabled and disabled in accordance with an efficiency policy may be provided. The method may include determining if an operating temperature for the power system is greater than a first threshold temperature. The method may also include enabling one or more power modules disabled in accordance with the efficiency policy in response to a determination that the operating temperature is greater than the first threshold temperature.

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Номер записи: 40
19-04-2012 дата публикации

Smart nema outlets and associated networks

Номер: US20120095610A1
Автор: Steve Chapel, William Pachoud
Принадлежит: Zonit Structured Solutions LLC

A control system ( 300 ) allows standard NEMA receptacles to be remotely monitored and/or controlled, for example, to intelligently execute blackouts or brownouts or to otherwise remotely control electrical appliances. The system ( 300 ) includes a number of smart receptacles ( 302 ) that communicate with a local controller ( 304 ), e.g., via power lines using the TCP/IP protocol. The local controller ( 304 ), in turn, communicates with a remote controller ( 308 ) via the internet.

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Номер записи: 41
26-04-2012 дата публикации

Three-level active rectification pulse width modulation control

Номер: US20120099349A1
Автор: John Duward Sagona
Принадлежит: Hamilton Sundstrand Corp

An active rectification system includes a three-level active rectifier and a pulse with modulation (PWM) control portion. The three-level active rectifier includes at least three switches, the at least three switches are selectively switchable between an upper state, a center state, and a lower state. The PWM control portion is in communication with the at least three switches, the PWM control portion is configured and disposed to create an upper carrier signal and a lower carrier signal, and the PWM control portion is configured and disposed to selectively switch the at least three switches between the upper state, the center state, and the lower state in response to a phase disposition of the upper carrier signal and the lower carrier signal.

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Номер записи: 42
03-05-2012 дата публикации

Power factor and line distortion method and apparatus

Номер: US20120106211A1
Автор: David Freeman, Fernando Mujica, Marco Corsi
Принадлежит: Texas Instruments Inc

Today, power distribution systems can be used to supply power to many loads, and since many loads, such as servers, are reactive (i.e., have capacitors and/or inductors), line distortion and power factor can be an issue. Conventional techniques to correct for line distortion and power factor use a specialized circuit that is generally in series with the load, but these specialized circuits can be prohibitively expensive when used in large numbers. Here, however, a corrective power supply has been provided, which can correct for other parallel power supplies that can reduce cost.

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Номер записи: 43
03-05-2012 дата публикации

Method of operating an inverter by turning off the switching around a zero transition of the alternating output current

Номер: US20120106222A1
Автор: Christoph Schill
Принадлежит: Diehl AKO Stiftung and Co KG

A method of operating an inverter for converting direct voltage into alternating voltage. The inverter has direct-voltage terminals and alternating-voltage terminals and a plurality of power switching elements that are clocked at high-frequency connected between the d.c. and a.c. terminals. The high-frequency clocking of the power switching elements of the inverter is switched off around a zero transition of the alternating current or the alternating voltage for a period which depends on the direct voltage present at the direct-voltage terminals of the inverter and/or the output power of the inverter. No current is generated during time intervals with a poor efficiency.

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Номер записи: 44
10-05-2012 дата публикации

Resonant power supply for use with high inductive loads and method of providing same

Номер: US20120111850A1
Автор: Ted Casper
Принадлежит: Individual

A resonant power supply ( 900 ) for use with high inductive loads includes an input rectifier ( 903 ) and a switching inverter formed using a plurality of parallel connected half bridge networks for switching the voltage provided from the input rectifier ( 903 ). A transformer ( 927 ) is used whose primary is connected to the switching inverter and whose secondary is connected to load such as a crucible ( 931 ). A capacitor ( 929 ) is used in series with the primary of the transformer ( 927 ) for resonating the inductance in the secondary circuit at the frequency of the switching inverter to provide maximum power transfer to the crucible ( 931 ).

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Номер записи: 45
10-05-2012 дата публикации

Low cost power supply circuit and method

Номер: US20120112657A1
Автор: Geert Willem Van Der Veen, Jeroen Snelten
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings.

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Номер записи: 46
10-05-2012 дата публикации

Switching power supply with self-optimizing efficiency

Номер: US20120112720A1
Автор: Guido Remmert
Принадлежит: Phoenix Contact GmbH and Co KG

A switching power supply is provided that includes: input terminals for the uptake of an input power, output terminals for providing an output power, a circuit disposed between the input and output terminals for transforming the input power and having at least one controllable switch, a control unit for controlling the at least one controllable switch by means of at least one pulse-width modulation signal having variable frequency and variable duty cycle, and having measuring instruments connected to control unit, designed for at least measuring the input current intensity, the input voltage, the output current intensity, and the output voltage, wherein control unit is designed for the purpose of monitoring the efficiency of switching power supply by means of measurement values of the connected measuring instruments, and of optimizing the efficiency by controlling the at least one controllable switch by means of a first digital control loop. Also provided is a method for operating a switching power supply.

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Номер записи: 47
10-05-2012 дата публикации

Switching power supply device

Номер: US20120113689A1
Автор: Jian Chen, Masayuki Yamadaya
Принадлежит: Fuji Electric Co Ltd

A switching power supply device that includes a feedback terminal to which a feedback signal according to a load state is input, and a comparator which compares a terminal voltage of the feedback terminal with a reference voltage and determines whether the load state is a normal load state or a light load state. The switching power supply device also includes pull-up resistors which are connected to the feedback terminal, a switch element which switches resistance values of the pull-up resistors according to the change of the load state, and a switch element which switches the resistance values of the pull-up resistors according to whether the input voltage is high or low.

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Номер записи: 48
17-05-2012 дата публикации

Smart Power Sockets, Boards, and Plugs

Номер: US20120119577A1
Автор: Michael Paul Clarke
Принадлежит: International Business Machines Corp

An approach is provided where a smart socket receives a request over a power line and generates a request based on the received request. The second request is transmitted over a power cord connecting the smart power socket to a device. A response is received from the device and a power setting is identified therefrom. The smart socket regulates electrical current flowing from the smart power socket to the device using the identified setting. In a related approach, the device receives a power down request over a power cord from a smart power socket. The device determines whether power is still needed at the device in order to perform one or more device operations. The device then returns a response to the smart power socket, with the response indicating whether power is still needed at the device.

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Номер записи: 49
17-05-2012 дата публикации

Air conditioning wiring system

Номер: US20120122323A1
Автор: Aylan A. Him, Carlos O. Chamorro, Merlin K. Chapin, Michael Renker, Randall L. Lisbona, Richard A. Mauk, Robert W. Gilkison, Steven C. Brown
Принадлежит: Lennox Industries Inc

A wiring system for use in an air conditioning system comprising a printed circuit board having wiring receptacles and wiring connectors. In one aspect, at least some of the wiring receptacles comprise two or more wiring sub-receptacles, and each of the wiring sub-receptacles includes a slotted sub-receptacle connection pattern. Furthermore, the slotted sub-receptacle connection pattern of each of the wiring sub-receptacles is different from every other sub-receptacle connection pattern. Each of the wiring connectors includes a ridged connection pattern that is different from every other ridged connection pattern of the wiring connectors, such that a given wiring connector is receivable within only one of the wiring sub-receptacles. An air conditioning system and a method of manufacturing is also provided.

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Номер записи: 50
31-05-2012 дата публикации

Method for zone based energy management system with scalable map interface

Номер: US20120135759A1
Автор: James Hollister, John Frederick Cottrell, Kevin R. Imes
Принадлежит: Individual

A method of managing energy use of a network device located at a site with a mobile device is provided. The method proceeds by determining a plurality of zones about the site and detecting a current location of the mobile device relative to the plurality of zones. The method continues by altering the operating condition of the network device in response to detecting the mobile device changing zones. A graphical user interface (GUI) is displayed within the display screen of the mobile device. A map presenting the site location, the plurality of zones disposed about the site location, and the current location of the mobile device is displayed within the GUI along with a distance selector including selectable distance values. The method further includes automatically scaling the plurality of zones and the map in response to changing the selectable distance value using the distance selector.

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Номер записи: 51
07-06-2012 дата публикации

Semiconductor Device

Номер: US20120139130A1
Автор: Masaki Shiraishi, Nobuyoshi Matsuura, Tomoaki Uno, Yukihiro Satou
Принадлежит: Renesas Electronics Corp

The present invention provides a non-insulated type DC-DC converter having a circuit in which a power MOS•FET for a high side switch and a power MOS•FET for a low side switch are connected in series. In the non-insulated type DC-DC converter, the power transistor for the high side switch, the power transistor for the low side switch, and driver circuits that drive these are respectively constituted by different semiconductor chips. The three semiconductor chips are accommodated in one package, and the semiconductor chip including the power transistor for the high side switch, and the semiconductor chip including the driver circuits are disposed so as to approach each other.

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Номер записи: 52
07-06-2012 дата публикации

Active rectification control

Номер: US20120140537A1
Автор: Souren G. Fattal
Принадлежит: Hamilton Sundstrand Corp

An active rectification system includes an active rectifier, a pulse width modulation (PWM) control, and a closed loop vector control. The PWM control portion is configured to control switching of the active rectifier and the closed loop vector control is configured to generate the required duty cycles for the PWM signals that regulate the DC voltage output and force a three-phase current input of the active rectifier to align with a three-phase pole voltage input of the active rectifier.

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Номер записи: 53
07-06-2012 дата публикации

Synchronous rectifier bi-directional current sensor

Номер: US20120140538A1
Автор: Robert Matthew Martinelli
Принадлежит: Boeing Co

A method and apparatus for bi-directional current sensing for a synchronous rectifier bi-directional converter system is disclosed. A first current is measured through a first synchronous rectifier via a first transformer to provide a first signal. A second current is measured through a second force synchronous rectifier via a second transformer to provide a second signal. The first signal and the second signal are DC restored to provide a first DC restored signal and a second DC restored signal respectively. A first correction current is added to the first DC restored signal to produce a first corrected signal, and a second correction current is added to the second DC restored signal to produce a second corrected signal. The first corrected signal and the second corrected signal are added to produce a combined signal.

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Номер записи: 54
07-06-2012 дата публикации

Energy Monitor

Номер: US20120143539A1
Автор: Damian Krause
Принадлежит: Individual

An energy monitor that measures the amount of electricity consumed by an appliance and translates that measurement into the amount of carbon dioxide that was emitted into the atmosphere as a result of creating that amount of electricity.

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Номер записи: 55
07-06-2012 дата публикации

Rules engine with database triggering

Номер: US20120143810A1
Автор: Anker Berg-Sonne
Принадлежит: Individual

An automated facilities management system has the ability to predict occupant behavior by identifying recurring patterns in the way that people use buildings and comparing them with environmental characteristics. This technology is not limited to human behavior patterns, but extends to any mechanical systems or data points that tend to vary in recurring patterns. The data processing is carried out by rules engines triggered by relational database modifications.

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Номер записи: 56
14-06-2012 дата публикации

Methods and apparatus for providing and distributing standby power

Номер: US20120146417A1
Автор: David A. Colucci, Neil Rasmussen, William Ziegler
Принадлежит: American Power Conversion Corp

Aspects of the invention are directed to power distribution systems and methods for distributing power from a primary power source and a backup power source to a load. In one particular aspect, a power distribution system includes a first input to receive input power from the primary power source, a second input to receive input power from the backup power source, an output that provides output power from at least one of the primary power source and the backup power source, a first switch operatively coupled to the first input and the output and operative to selectively couple the first input to the output, a second switch operatively coupled to the second input and the output and operative to selectively couple the second input to the output, and a controller operatively coupled to the first switch and to the second switch and configured to control the first switch and the second switch to provide an electrical interlock.

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Номер записи: 57
14-06-2012 дата публикации

Method and apparatus providing universal voltage input for solid state light fixtures

Номер: US20120146529A1
Автор: Gregory Campbell, Igor Shikh
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A method for providing universal voltage input to a solid state lighting fixture ( 140 ) supplied by an AC line voltage includes converting an analog voltage signal corresponding to the line voltage to digital values indicating a waveform of the line voltage (S 312 ) and calculating slopes corresponding to rising edges of the waveform using select values of the digital values (S 453 ). A value of the line voltage is determined based on the calculated slopes (S 458 ).

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Номер записи: 58
21-06-2012 дата публикации

Power-generation control apparatus, power-generation control method and power generation system

Номер: US20120153724A1
Автор: Atsushi Sato, Hiroshi Hasegawa, Yoshiaki Inoue
Принадлежит: Sony Corp

Disclosed herein is a power generation control apparatus including: a power generation efficiency control section configured to control the power generation efficiency of a power generation module for generating electric power in accordance with light received by the power generation module; and a power accumulation control section configured to control power accumulation into the power accumulation section accumulating electric power generated by the power generation module by detecting the power accumulation state of the power accumulation section. When the power generation module is in a state of being capable of generating electric power and if the power accumulation section is in a state of having fully accumulated electric power and if a load connected to the power accumulation section is in a state of consuming no electric power, the power generation efficiency control section controls the power generation module to generate electric power at a low power generation efficiency.

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Номер записи: 59
21-06-2012 дата публикации

Switching Mode Power Supply Control

Номер: US20120153919A1
Автор: Andrea Vecchiato, Cristian Garbossa, Enrico Orietti, Marco Flaibani
Принадлежит: INFINEON TECHNOLOGIES AUSTRIA AG

A method for controlling a switching converter is disclosed whereby the switching converter is configured to convert an input voltage into an output voltage supplied to a load in accordance with a switching signal, The switching converter is configured to operate in a pulse width modulation mode or, alternatively, in a pulse frequency modulation mode. When operating in the pulse width modulation mode, generating, as the switching signal, a pulse width modulated (PWM) signal of a pre-defined constant switching frequency. The PWM signal has a duty cycle that is regulated such that the output voltage of the switching converter matches, at least approximately, a desired output voltage under the condition that the duty cycle being regulated such that it does not fall below a predefined minimum duty cycle. The output voltage is monitored and switched over to the pulse frequency modulation mode when the output voltage exceeds a predefined first threshold. The method further comprises, when operating in the pulse frequency modulation mode, monitoring the output voltage and generating, as the switching signal, a series of pulses of a predefined constant pulse length. A pulse is generated each time the output voltage falls to a predefined second threshold and monitoring the frequency of the switching signal and switching to the pulse width modulation mode when the frequency of the switching signal exceeds a predefined frequency threshold.

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Номер записи: 60
21-06-2012 дата публикации

Personal Energy Management System

Номер: US20120158203A1
Автор: George Feldstein
Принадлежит: Crestron Electronics Inc

Presented is a system for managing energy usage of a user. The system includes a database storing a preferred energy profile associated with the user and a minimum energy profile, an automation control system that controls at least one device associated with the user, a presence detecting apparatus for detecting when the user is present, and a system control computer. The system control computer instructs the automation control system to operate the one device according to the preferred energy profile associated with the user in response to the presence detecting apparatus detecting the presence of the user. The system control computer further instructs the automation control system to operate the one device according to the minimum energy profile in response to the presence detecting apparatus detecting the absence of the user.

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Номер записи: 61
28-06-2012 дата публикации

Power supply unit having a voltage converter

Номер: US20120163054A1
Автор: Daniel Lüthi, Jean-Noël DIVOUX, Siegfried Kern, Steffen Schmid
Принадлежит: EM Microelectronic Marin SA

The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on the primary side, the primary part of the converter being associated with a control circuit also arranged on the primary side and controlling the electrical energy flowing in the primary power path of the primary part. The control circuit receives from the power management unit at least a first control signal for switching OFF the electrical energy in the primary power path, the power supply unit entering a very low power mode (“Power-down” mode) when the first control signal is set to OFF so that the converter is not supplied anymore. The power management unit is arranged such that, in the very low power mode, it can receive or generate at least a wake-up signal and set to ON the first control signal in response to the wake-up signal for supplying again the primary and secondary parts of the converter.

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Номер записи: 62
28-06-2012 дата публикации

Apparatus for verifying and managing consumption electric power data in a green home electric power management system and method thereof

Номер: US20120165998A1
Автор: Chang-Sic Choi, Il Woo Lee, Jeong In Lee, Jinsoo Han, Wan Ki PARK
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An apparatus for verifying and managing consumption electric power data in a green home electric power management system includes: an electric management object structure configured according to an outlet of home, an electric power sensor node of a hole of the outlet, a device and a device; and a consumption electric power data management apparatus for storing a consumption electric power data transmitted from an electric power measuring module embedded outlet and a time information table in the electric management object structure and managing consumption electric power information. The apparatus further includes a verifying apparatus for generating a simulation consumption electric power data.

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Номер записи: 63
28-06-2012 дата публикации

Energy management system in home network interworking with smart grid

Номер: US20120166004A1
Автор: Il Woo Lee, Jinsoo Han, Wan Ki PARK
Принадлежит: Electronics and Telecommunications Research Institute ETRI, KT Corp

An energy management system in a home network interworking with a smart grid includes: a power management apparatus for managing power consumption of a power consumption apparatus; a power storage apparatus for storing or supplying power to the power consumption apparatus; a power production apparatus for transmitting status information of its power production to the power management apparatus; a mobile power storage/supply apparatus for transmitting its power status to the power management apparatus; a smart meter for transmitting a real-time price and demand response information to the power management apparatus; and a wireless terminal for inputting a schedule of a home power consumer.

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Номер записи: 64
28-06-2012 дата публикации

Method and system for integral energy management of buildings

Номер: US20120166007A1
Автор: Chang-Sie Choi, Hyun Jin Yoon, Il Woo Lee, Jinsoo Han, Wan Ki PARK, Youn Kwae Jeong
Принадлежит: Electronics and Telecommunications Research Institute ETRI

An EMM (Energy Monitoring and Management) control system performs energy management of buildings, each building having an EMM client disposed therein. The EMM control system includes an EMM server configured to receive operation information of energy-consuming equipments in the building and information related to energy and environment of the building from the EMM client to perform a function of analyzing/taking statistics/reporting for the operation information, and energy and environment information, an EOM (Energy Optimization and Maintenance) server configured to derive an optimum energy operation program through energy evaluation index and simulation from the information provided from the EMM client and providing the optimum energy operation program to the EMM client.

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Номер записи: 65
05-07-2012 дата публикации

Semi resonant switching regulator, power factor control and led lighting

Номер: US20120169240A1
Автор: Alistair Allan Macfarlane
Принадлежит: Individual

Described are improvements in power factor control and systems embodying said improved power factor control. Improvements lie in a method of zero voltage switching in which a capacitor is placed in parallel with a switching device, and the switching device is operated responsive to a change in the polarity of the current through the capacitor. Switching therefore occurs at zero or close to zero voltage across the switching device in both on and off modes resulting in very low switching losses and electromagnetic interference. Systems employing the method include a power factor controller, LED light source, boost converter and a power source comprising one or more photovoltaic cells.

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Номер записи: 66
05-07-2012 дата публикации

Method and apparatus for implementing an unregulated dormant mode in a power converter

Номер: US20120170329A1
Автор: David Michael Hugh Matthews
Принадлежит: Power Integrations Inc

A control circuit includes a drive signal generator controlling switching of a power switch to regulate a flow of energy to one or more loads coupled to a power converter output. A regulator circuit charges a capacitor to a first voltage and stops charging the capacitor if an energy requirement of the one or more loads falls below a threshold. The regulator again charges the capacitor after the capacitor is discharged from the first voltage to a second voltage. An unregulated dormant mode control circuit renders dormant the drive signal generator and the regulator circuit while the capacitor is discharged from the first voltage to the second voltage causing the regulation of the flow of energy to the power converter output to cease. The drive signal generator and the regulator circuit are powered up after the capacitor is discharged from the first voltage to the second voltage.

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Номер записи: 67
05-07-2012 дата публикации

Method and system for reducing feeder circuit loss using demand response

Номер: US20120173030A1
Автор: Jeffrey D. Taft
Принадлежит: Accenture Global Services Ltd

A system and method that analyzes at least one aspect of the power grid for demand response in order to reduce feeder circuit losses is provided. The system and method may use a demand response model to select one or more factors for the demand response, such as selecting a subset of customers for demand response from a larger pool of available demand response customers. The demand response model may include a grid structure component, such as an indication of the particular customer's position in the grid, and a dynamic operation component, such as a real-time measurement of current in the feeder circuit. By using the demand response model, feeder circuit losses may thereby reduced.

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Номер записи: 68
12-07-2012 дата публикации

Switching Power Converter Having Optimal Dynamic Load Response with Ultra-Low No Load Power Consumption

Номер: US20120176820A1
Автор: David Nguyen, Fuqiang Shi, Xiaolin Gao, YONG Li
Принадлежит: iWatt Inc

A switch controller is disclosed that adaptively controls the operating frequency of a switching power converter in order to improve one-time load response and repetitive dynamic load responses. During a transition from a high load to low load condition, the switch controller clamps the operating frequency of the switching power converter at an intermediate frequency for a period of time before allowing the operating frequency to return to a frequency associated with the low load condition. The clamped frequency is higher than the frequency associated with the low load condition thereby allowing improved response to a subsequent load change to a high load condition. Thus, the system improves dynamic load response without compromising no-load power consumption.

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Номер записи: 69
19-07-2012 дата публикации

System and Method for Controlling a Switched-Mode Power Supply

Номер: US20120182003A1
Автор: Andrea Vecchiato, Cristian Garbossa, Enrico Orietti, Marco Flaibani
Принадлежит: INFINEON TECHNOLOGIES AUSTRIA AG

In an embodiment, a method of operating a switched-mode power supply includes producing an error signal based on a difference between a power supply output voltage and a reference voltage. A clock frequency is produced that is proportional to the error signal up to maximum frequency, and a sensed current signal is produced that is proportional to a current in switched-mode power supply. The error signal is summed with the sensed current signal to produce a first signal, and the first signal is compared to a first threshold. The method also includes producing a first edge of a drive signal at a first edge of the clock signal, and producing a second edge of the drive signal when the first signal crosses the first threshold in a first direction based on the comparing, where the second edge opposite the first edge.

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Номер записи: 70
26-07-2012 дата публикации

Electric power management system

Номер: US20120191263A1
Автор: Kenji Kuniyosi
Принадлежит: Panasonic Corp

An electric power management system includes a power meter connected to a power system of a commercial power source and a power conditioner connected to the power meter, a power generating device and an electric appliance. The power meter and the power conditioner are configured to exchange power information through a communications part at the side of the power meter.

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Номер записи: 71
02-08-2012 дата публикации

Energy efficient inductive power transmission system and method

Номер: US20120193993A1
Автор: Alfred Leibovitz, Amir Ben-Shalom, Arik Rofe, Moti Ashery, Oola Greenwald, Yossi Azancot
Принадлежит: POWERMAT LTD

An inductive power transfer system and method for transferring power to an electrical device wirelessly. The system includes an inductive power outlet and an inductive power receiver. During operation, instruction signals are sent from the inductive power outlet to the inductive power receiver. When no instruction signals are transferred, the system is configured to deactivate such that power is drawn by the system only during operation.

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Номер записи: 72
02-08-2012 дата публикации

Systems and Methods for High Speed Power Factor Correction

Номер: US20120195082A1
Автор: Robert Stephen Wrathall
Принадлежит: Individual

Systems and methods described herein provide for high speed power factor correction which can overcome or substantially alleviate the problems associated with changes in the operating conditions of a load or other transient events. The present technology senses the present state conditions of a signal to quickly and accurately determine the presence of an overtone component within the signal. The expected value of the overtone component is then determined based on the sensed state of the signal. Power factor correction is then performed to suppress the overtone utilizing a control signal formed based on the expected value of the overtone. By performing power factor correction based on the expected value, the present technology can provide high speed power factor correction which is not limited by the delay introduced by an adaptive feedback loop.

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Номер записи: 73
09-08-2012 дата публикации

Battery charging station

Номер: US20120200256A1
Автор: David Yuan Jei Tse
Принадлежит: Atieva Inc

A method of operating an electric vehicle charging system utilizing a plurality of charging units and charging points is disclosed. The method includes determining a rate of charge to be delivered to each vehicle and then allocating a respective portion of the total charging capacity of the charging station to each vehicle.

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Номер записи: 74
09-08-2012 дата публикации

Switch controller and converter including the same

Номер: US20120200273A1
Автор: Gyoung-Soo Park, Hyun-Chul EOM, Jin-Tae Kim
Принадлежит: Individual

The present invention relates to a switch controller and a converter including the same. The switch controller generates an oscillating voltage determining a switching frequency alternately switching a high-side switch and a low-side switch, senses a power source voltage supplied to the switch controller, and maintains the high-side switch and the low-side switch in the turn-off state in a case that the change of the power source voltage is not generated after one of the high-side switch and the low-side switch is turned off according to the oscillating voltage.

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Номер записи: 75
09-08-2012 дата публикации

Remote power control system and power supply tap

Номер: US20120200398A1
Автор: Takashi Minemura
Принадлежит: Toshiba Corp

According to one embodiment, a power supply tap includes a first wireless reception module which receives a control request which is transmitted from a remote-control terminal by a first wireless signal, a power observation module which is activated in a case where the received control request includes a power information acquisition request, and observes a total amount of power including power supplied to an electric apparatus from a power output module and power consumed by a communication control module, a first wireless transmission module which transmits the observed total amount of power to the remote-control terminal by a second wireless signal, and a switch control module which turns off a switch in a case where the control request received by the first wireless reception module includes a power-off request, thereby shutting off power supply to the electric apparatus from the power output module.

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Номер записи: 76
09-08-2012 дата публикации

Standby power cut-off device and control method thereof and power supply

Номер: US20120201062A1
Автор: Sung-Sub Lee
Принадлежит: Seoby Electronics Co Ltd

The present invention is related to a standby power cut-off device that cuts off standby power generated from an electrical appliance by learning power on/off control data sent from a remote control, and upon receipt of the power on/off control data of the remote control, simultaneously controls commercial power (main power) supplied to the electrical appliance, and a control method thereof. The standby power cut-off device includes: a voltage converter for converting commercial power into DC power; a charging/discharging unit for charging the DC power supplied from the voltage converter and supplying the same as operating power; a voltage detector for detecting a charging level of the charging/discharging unit; a receiver for receiving power on/off control data of a remote control; a controller for executing standby power cut-off control of a designated electrical appliance in accordance with the power on/off control data of the remote control; a first switch that is switched on/off under the control of the controller to permit or cut off the commercial power supplied to the electrical appliance; a transmitter for sending the power on control data of the electrical appliance under the control of the controller; and a second switch that is switched on/off under the control of the controller to permit or cut off the commercial power supplied to the voltage converter.

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Номер записи: 77
16-08-2012 дата публикации

Three-level power conversion apparatus

Номер: US20120205983A1
Автор: Kimiyuki Koyanagi, Masahiro Kinoshita
Принадлежит: Mitsubishi Electric Corp, Toshiba Mitsubishi Electric Industrial Systems Corp

Wiring between semiconductor modules and a direct current power supply circuit, which construct a three-level power conversion apparatus, is made to be low inductance, so that reduction in size and cost can be attained easily. In cases where a connection is made between direct current power supplies (electrolytic capacitors) 25, 26 and IGBT modules 16 through 18 of a three-level inverter, a wiring conductor for a bi-directional switch part is divided into three conductors 35, 42, 43 or two conductors 35, 42 on a same surface, and these conductors are sandwiched by a P conductor 33 and an N conductor 37 , which are arranged at outer sides thereof, respectively, through insulating materials, so that a three-layer wiring structure of a sealed structure is formed. As a result of this, wiring inductance can be made small even with a small number of laminated layers, so that the reduction in size and cost of the apparatus as a whole is achieved.

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Номер записи: 78
16-08-2012 дата публикации

Semiconductor switch

Номер: US20120206899A1
Автор: Atsuhiko Kuzumaki, Hiromichi Tai, Hiroshi Mochikawa, Kazuyasu Takimoto, Yosuke Nakazawa
Принадлежит: Toshiba Corp

According to one embodiment, a semiconductor switch includes a main element including a switching element and an antiparallel diode, and a reverse voltage application circuit. The reverse voltage application circuit includes an auxiliary electric-power supply, a high-speed free wheeling diode, an auxiliary element, and a capacitor. The high-speed free wheeling diode comprises a plurality of diodes connected in series.

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Номер записи: 79
16-08-2012 дата публикации

Electric device and power management apparatus for changing demand response (dr) control level

Номер: US20120209443A1
Автор: Do Gwan LEE, Jin Chul Shin
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An electric device for changing a DR control level and a power management apparatus for the same are disclosed. An electric device for changing a demand response (DR) control level includes a memory unit to store a plurality of DR control levels classified according to power rates, a communication unit to receive a current power rate and a current power rate level related to the current power rate from a power provider in real time, a user interface which, upon receiving a request for changing a DR control level from a user, displays a list of pre-stored DR control levels and receives a DR control level to be changed from the user, and a controller to compare the current power rate level with the changed DR control level, and determine whether to perform a power saving operation. As a result, the electric device can decide whether to increase the usage of the electric device or to consider the power saving aspect using current power status information transmitted in real time, thereby adaptively adjusting a start level of the DR control.

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Номер записи: 80
23-08-2012 дата публикации

Input current shaping for transition and discontinuous mode power converter

Номер: US20120212276A1
Автор: Ivan Feno, Silvio Ziegler
Принадлежит: Power One Inc

A power converter operable to draw an input current that is in phase with an input voltage of the power converter and proportional to a voltage of the input voltage of the power converter includes a drive switch, a waveform generator, and a current shaping circuit. The drive switch is connected between an input inductor and ground and draws current through the input inductor when turned on. The current shaping circuit provides an on-time of the drive switch for a next cycle of the drive switch as a function of an input current decay time, a switching period of the waveform generator, and an output voltage of the power converter. The waveform generator is responsive to the on-time provided by the current shaping circuit for selectively turning the drive switch on and off to cycle the drive switch as a function of the received on-time.

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Номер записи: 81
23-08-2012 дата публикации

Low Power Switch Mode Power Supply

Номер: US20120212978A1
Автор: Jan Knudsen, Rene Ingemann Pedersen
Принадлежит: ZZZERO APS

A device and a method for operating a low power switch mode power supply, where OC input power is converted to AC power by an oscillator, which AC power is transformed to an AC voltage and AC current, which output power is converted into DC power, where the DC voltage is used as a feedback signal for controlling the oscillator. It is the object of the invention to reduce a standby power consumption of power consuming devices. The oscillator comprises a first and a second current loop, which first current loop generates an activation current for the second current loop, where the primary coil of a transformer is part of the second current loop, and where the second loop comprises a current/voltage measuring system and generates increasing current in the second current loop and closes the current flow in the second current loop.

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Номер записи: 82
30-08-2012 дата публикации

Switching systems and methods for use in uninterruptible power supplies

Номер: US20120217808A1
Автор: James Patrick Richardson, Than Quoc Le
Принадлежит: Alpha Technologies Inc

The present invention may be embodied as an uninterruptible power supply comprising an input section, an output section, an inverter section, and a transformer. The transformer is operatively connected to the input section, the output section, and the inverter section. The uninterruptible power supply operates in a line mode and in a standby mode. In the standby mode, the output section generates an output power signal from a standby signal generated by the inverter section based on the alternative power source and at least one inverter control signal. When the uninterruptible power supply operates in the standby mode, the at least one inverter control signal is pulse-width modulated during at least a first portion of a cycle of the output power signal and not pulse-width modulated during at least a second portion of the cycle of the output power signal.

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Номер записи: 83
30-08-2012 дата публикации

Control for switching between pwm and pfm operation in a buck converter

Номер: US20120217946A1
Автор: Shu-ing Ju
Принадлежит: National Semiconductor Corp

Mode control circuitry is disclosed for use in a buck switching voltage regulator capable of operating in a pulse width modulation (PWM) mode and a pulse frequency modulation (PFM) mode, with the regulator including an inductor having first and second opposite inductor terminals, a first transistor switch connected between the first inductor terminal and a power input terminal and a second transistor switch connected between the first inductor terminal and a circuit common. Current sensing circuitry is provided to sense inductor current through the second switching transistor when the second switching transistor is switched to an ON state and to produce a current sense signal which is integrated over time starting when the second switching transistor is switched to an ON state and to produce a sense signal. The mode switching circuitry switches between the PWM and PFM modes in response to the sense signal.

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Номер записи: 84
30-08-2012 дата публикации

Power converter device and driving method thereof

Номер: US20120218800A1
Автор: Satoshi Azuma, Takushi Jimichi
Принадлежит: Mitsubishi Electric Corp

A leg includes: two semiconductor device groups connected in series and a division current is generated in a current which flows in the semiconductor device group between elements in the semiconductor device groups, a current sensor which detects a current which flows in the semiconductor device group, a voltage command generation unit which calculates a voltage command value to be outputted, a voltage drop calculating unit which calculates a voltage drop of the semiconductor device group by using a current value which is detected by the current sensor and voltage drop characteristics including a division characteristic of the semiconductor device group, and a switching control unit which corrects a voltage command value which is generated by the voltage command generation unit by using the voltage drop which is calculated so as to control ON/OFF of the switching element.

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Номер записи: 85
30-08-2012 дата публикации

Centrifugal Compressor Part Load Control Algorithm for Improved Performance

Номер: US20120219431A1
Автор: Joost Brasz, Vishnu M. Sishtla
Принадлежит: Carrier Corp

A compressor system having a centrifugal compressor, controller and an interface is disclosed. The compressor includes adjustable guide vanes and a variable geometry diffuser. The controller is in electrical communication with each of the guide vanes and diffuser so as to monitor and adjust positions thereof in accordance with a predetermined control algorithm. The control algorithm is implemented in accordance with a method of controlling the centrifugal compressor. The method adjusts the position of the diffuser based on the actual lift, guide vane position and predetermined relationships between diffuser position and reference lift.

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Номер записи: 86
30-08-2012 дата публикации

Gateway apparatus for substation automation system

Номер: US20120221763A1
Автор: Sung Sik Ham
Принадлежит: LSIS Co Ltd

A communication gateway apparatus for a substation automation system, the gateway includes a VERSA Module Eurocard (VME) bus to provide a data communication path, a Peripheral Component Interconnect (PCI)-VME module connected to the VME bus for communication and having a PCI-VME bus bridge circuit to transfer data of the VME bus to a PCI bus or data of the PCI bus to the VME bus, and a plurality of input/output modules connected to the VME bus for communication.

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Номер записи: 87
06-09-2012 дата публикации

Power control apparatus and power control method using same

Номер: US20120226572A1
Автор: Jong Soo Park, Seong Geun Heo, Sung Nam Ryoo
Принадлежит: LG ELECTRONICS INC

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.

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Номер записи: 88
13-09-2012 дата публикации

Methods and systems for charging an electric vehicle

Номер: US20120229082A1
Автор: Aleksandar Vukojevic, John Christopher Boot
Принадлежит: General Electric Co

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.

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Номер записи: 89
13-09-2012 дата публикации

Two-Peak Current Control for Flyback Voltage Converters

Номер: US20120230065A1
Автор: Hao Peng, Jinho Choi, Tuyen DOAN, Wanfeng Zhang
Принадлежит: MARVELL WORLD TRADE LTD

A system including a switch configured to supply power to a load. A first comparator is configured to compare a first current through the switch to a first threshold. A second comparator is configured to compare the first current through the switch to a second threshold. The second threshold is greater than the first threshold. A current control module is configured to turn off the switch (i) for a first duration in response to the first current through the switch being greater than or equal to the first threshold and (ii) for a second duration in response to the first current through the switch being greater than or equal to the second threshold. The current control module is configured to adjust the second duration based on a difference between an estimated current through the load and a desired current through the load.

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Номер записи: 90
13-09-2012 дата публикации

Converter with power factor correction

Номер: US20120230068A1
Автор: Christian Augesky
Принадлежит: SIEMENS AG

A converter for converting an input-side alternating current into an output-side DC current, with a power factor correction being provided, wherein the converter comprises a transformer having at least two serially arranged primary windings, a first switch is used to switch a storage capacitor unit in series with a first primary winding to the alternating current in a clocked manner via rectification elements and a second primary winding is switchable to the storage capacitor unit in a clocked manner by a second switch.

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Номер записи: 91
20-09-2012 дата публикации

Energy storage system

Номер: US20120235625A1
Автор: Kiyotaka Takehara
Принадлежит: Panasonic Corp

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.

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Номер записи: 92
20-09-2012 дата публикации

Battery charging apparatus

Номер: US20120235626A1
Автор: Hyung Tae MOON, Sun Min Hwang, Sung Min Oh, Tae Kyung MOON
Принадлежит: Individual

A battery charging apparatus includes a converting unit, first and second charging units and a switching unit. The converting unit separately convert AC power into a first voltage and a second voltage. The first charging unit drops the converted first voltage and charge a high voltage battery with the dropped first voltage. The second charging unit drops the converted second voltage or a third voltage of the high voltage battery, and charges an auxiliary battery with the dropped second or third voltage. The switching unit performs, in a first mode, the charging of the high voltage battery and the auxiliary battery by the AC power, and in a second mode, stops the charging of the high voltage battery by the AC power and performs the charging of the auxiliary battery by the third voltage.

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Номер записи: 93
20-09-2012 дата публикации

Power converter having high efficiency at low load

Номер: US20120236603A1
Автор: Li-Hao Liu, Lien-Hsing Chen
Принадлежит: Power Mate Technology Co Ltd, Powermate Technology Co Ltd

A power converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a drive control unit, a current detection control unit, a comparator and a second MOSFET at the secondary side. The comparator has its input end electrically connected to the current detection control unit and its output end electrically connected to the drive control unit, which is electrically connected to the second MOSFET for synchronous rectification. The second MOSFET is electrically connected to one end of the second winding, having a body diode built therein. The second winding and the second MOSFET constitute a combination circuit electrically connected to a load that has a capacitor electrically connected thereto in a parallel manner. By means of the aforesaid arrangement, conduction loss at a low load is minimized, thereby improving the efficiency at a low load.

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Номер записи: 94
20-09-2012 дата публикации

Ultralow no-load conduction loss dc power converter

Номер: US20120236605A1
Автор: Li-Hao Jiu, Lien-Hsing Chen
Принадлежит: Power Mate Technology Co Ltd, Powermate Technology Co Ltd

An ultralow no-load conduction loss DC converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a third winding, a drive control unit, a rectifier unit and a second MOSFET at the secondary side. The second MOSFET, the drive control unit and the rectifier unit constitutes a combination circuit electrically coupled between one end of the second winding and one end of the third winding. The second MOSFET has set therein a body diode. The second winding and the second MOSFET forms a combination circuit electrically connected to a load. Thus, the decision to turn off the drive control unit is made at the secondary side so that non-load conduction loss can be minimized.

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Номер записи: 95
20-09-2012 дата публикации

Apparatus for reducing standby power

Номер: US20120236609A1
Автор: Jin Hyung Son, Soon Joo Choi
Принадлежит: Korchip Corp

Disclosed is an apparatus for reducing standby power, which is capable of minimizing standby power losses by using an electric double layer capacitor (ELDC). The apparatus includes: an electric double layer capacitor for converting electrical energy supplied from the AC power source into DC power and storing the converted electrical energy; a charging circuit for charging the electrical energy in the electric double layer capacitor; a voltage conversion circuit for converting the electrical energy charged in the electrical double layer capacitor into a stable voltage; a voltage detection circuit for detecting a charged voltage of the electric double layer capacitor; and a power supply control circuit for turning on/off a power switch in response to a command from the voltage detection circuit, wherein the power supply control circuit uses the electrical energy charged in the electrical double layer capacitor to turn on/off the power switch.

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Номер записи: 96
20-09-2012 дата публикации

Resonant converter apparatus and method thereof

Номер: US20120236610A1
Автор: Tai Keung Lee, Wing Ling Cheng, Xiao Fen Zhong, Yi Cai
Принадлежит: Astec International Ltd

A resonant converter apparatus includes a plurality of resonant converters connected in parallel, and a control module outputting a pulse width modulation (PWM) control signal to the resonant converters. The control module includes a voltage control loop and a circuit control loop. The voltage control loop compares the sensed output voltage with a predetermined reference voltage, and outputs a PWM control signal to one of the resonant converters so the output voltage of the one converter is equal to the predetermined reference voltage. The current control loop uses the sensed output current of the one converter as a reference current, compares the reference current with the sensed output current from each of the other resonant converters, generates a frequency adjusting variable, and calculates the individual PWM control signal for each of the other converters so the output currents of the plurality of converters are the same.

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Номер записи: 97
20-09-2012 дата публикации

Method and system for distributed power management

Номер: US20120239216A1
Автор: Ganesh KULATHU, Martin NYKVIST, Otto Van Der Wal, Wolfgang Wimmer
Принадлежит: ABB TECHNOLOGY AG

A method and system for distributed power management with individual IEDs in a substation are disclosed. An exemplary technique can include providing multiple IEDs in a power network in the substation and integrating an intrinsic load shedding function in each IED. The technique can include identifying a power imbalance state at an individual IED and load shedding the individual IED using an intrinsic load shedding function when a power imbalance state is identified in a coordinated manner to achieve distributed power management in the substation.

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Номер записи: 98
20-09-2012 дата публикации

System, method, and apparatus for actively managing consumption of electric power supplied by one or more electric power grid operators

Номер: US20120239218A1
Автор: Joseph W. Forbes, Jr.
Принадлежит: Individual

A server manages consumption of power supplied by utility or electric power grid operator(s) to multiple power consuming devices. Power flow to the consuming devices is enabled and disabled by controllable devices controlled by one or more client devices. The server includes a command processor, event manager, database, and client device manager. The command processor receives commands from the operator(s) and issues event messages responsive thereto. The event manager maintains a power management status for each client device and issues event instructions responsive to event messages. The database stores information relating to power consumed by the consuming devices. The client device manager selects from the database, responsive to receipt of a power reduction event instruction, client device(s) to which to issue a message indicating a power reduction amount and/or identification of at least one controllable device to be instructed to disable power flow to associated consuming devices.

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Номер записи: 99
27-09-2012 дата публикации

Fixed-on-time controller utilizing an adaptive saw signal for discontinuous mode pfc power conversion

Номер: US20120242298A1
Автор: Yu-Ping Chu
Принадлежит: Grenergy Opto Inc

A fixed-on-time controller utilizing an adaptive saw signal for discontinuous mode PFC power conversion, the fixed-on-time controller comprising: an error amplifier, having a negative input end coupled to a feedback signal, a positive input end coupled to a reference voltage, and an output end for providing a threshold signal; an adaptive current source generator, used to generate an adaptive current source according to the threshold signal; a capacitor, charged by the adaptive current source, being used for carrying a saw signal; a switch, used to discharge the capacitor under the control of a reset signal; and a comparator, having a negative input end coupled to the threshold signal, a positive input end coupled to the saw signal, and an output end for providing a turn-off signal; and a fixed-on-time driver circuit, used to provide a driving signal and the reset signal according to the turn-off signal and a sensing signal.

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Номер записи: 100