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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 13610. Отображено 100.
05-01-2012 дата публикации

Apparatus and method to characterize multijunction photovoltaic solar cells

Номер: US20120004868A1
Автор: Simon Fafard
Принадлежит: Cyrium Technologies Inc

An apparatus and method to electrically and optically characterize a multijunction solar cell. The apparatus can have as many light sources as there are subcells in the multijunction solar cell. Each light source has an optical spectrum that falls within the bandgap energy of a corresponding subcell. Each light source has a controllable intensity level.

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Номер записи: 1
09-02-2012 дата публикации

In-process electrical connector

Номер: US20120032694A1
Автор: Imran Khan, James Hinkle, Modesto Sanchez, Thomas Truman
Принадлежит: Individual

Characteristics of partially assembled photovoltaic modules can be determined using electrical connection apparatuses and methods.

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Номер записи: 2
01-03-2012 дата публикации

Ground-fault detecting device, current collecting box using the ground-fault detecting device, and photovoltaic power generating device using the current collecting box

Номер: US20120048326A1
Автор: Shuhei Nishikawa, Takahisa Matsuo, Tsuyoshi SEKINE
Принадлежит: Sanyo Electric Co Ltd

A photovoltaic power generating device comprising a current collecting box side detector for detecting a ground fault in each of the photovoltaic strings, a switch disposed in correspondence to each of the photovoltaic strings and interposed between the photovoltaic string and a connecting cable, a current collecting box including a control unit providing an on/off control of the switch according to the detection result from the detector, a detector that detects a ground fault in a connecting cable between the current collecting box and the power conditioner, a switch interposed between the connecting cable and the inverter, and a power conditioner including a control unit providing an on/off control of the switch according to the detection result from the detector.

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Номер записи: 3
22-03-2012 дата публикации

Method for Determining a Spatial Arrangement of Photovoltaic Module Groups in a Photovoltaic Installation

Номер: US20120068687A1
Автор: Bjoern Magnussen, Jens Klein, Tobias Gunkel
Принадлежит: SMA Solar Technology AG

A method for determining a spatial arrangement of photovoltaic module groups in a photovoltaic installation includes measuring a sequence of values of an illumination-dependent electrical characteristic variable of different photovoltaic module groups while the photovoltaic installation is subject to light incidence with an incidence intensity which varies over time and spatially. The relative spatial arrangement of the photovoltaic module groups with respect to one another is then determined by comparing sequences of measured values associated with different photovoltaic module groups.

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Номер записи: 4
10-05-2012 дата публикации

Method of trimming a solar energy assembly

Номер: US20120112542A1
Автор: Byoung-June Kim, Czang-Ho Lee, Dong-Uk Choi, Jin-Seock Kim, Joon-Young Seo, Myung-Hun Shin, Seung-Jae Jung
Принадлежит: SAMSUNG ELECTRONICS CO LTD, Samsung SDI Co Ltd

A method of electrically eliminating defective solar cell units that are disposed within an integrated solar cells module and a method of trimming an output voltage of the integrated solar cells module are provided, where the solar cells module has a large number (e.g., 50 or more) of solar cell units integrally disposed therein and initially connected in series one to the next. The method includes providing a corresponding plurality of repair pads, each integrally extending from a respective electrode layer of the solar cell units, and providing a bypass conductor integrated within the module and extending adjacent to the repair pads. Pad-to-pad spacings and pad-to-bypass spacings are such that pad-to-pad connecting bridges may be selectively created between adjacent ones of the repair pads and such that pad-to-bypass connecting bridges may be selectively created between the repair pads and the adjacently extending bypass conductor.

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Номер записи: 5
17-05-2012 дата публикации

Robotic heliostat calibration system and method

Номер: US20120123720A1
Автор: Daniel Fukuba, Jos Goble, Salomon Trujillo, Thomas Joseph Currier, Wasiq Bokhari
Принадлежит: Individual

A robotic controller for autonomous calibration and inspection of two or more solar surfaces wherein the robotic controller includes a drive system to position itself near a solar surface such that onboard sensors may be utilized to gather information about the solar surface. An onboard communication unit relays information to a central processing network, this processor combines new information with stored historical data to calibrate a solar surface and/or to determine its instantaneous health.

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Номер записи: 6
04-10-2012 дата публикации

Method and device for recognizing faults in a photovoltaic system

Номер: US20120247542A1
Автор: Michael Ammer, Roland Proetsch, Thomas Muehlberger, Yvonne Zwirchmayr
Принадлежит: FRONIUS INTERNATIONAL GMBH

The invention relates to a method and a device for recognizing faults in a photovoltaic system ( 1 ). A first output voltage (U 0, UMPP) of the system ( 1 ) and/or a first parameter derived from the output voltage (U 0, UMPP) is determined at a first point in time in a first operating state of the photovoltaic system ( 1 ). At a second point in time in a second operating state comparable to the first operating state, a second output voltage (U 0, UMPP) and/or a second parameter of the system ( 1 ) derived from the output voltage (U 0, UMPP) is determined. Finally, a deviation between the first and the second output voltage (U 0, UMPP) and/or between the first and the second parameter is identified and a fault notification is output if the deviation exceeds a predeterminable threshold.

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Номер записи: 7
25-10-2012 дата публикации

Electrical test apparatus for a photovoltaic component

Номер: US20120268149A1
Автор: David Kahle, Kevin Niebel, Matthew J. Mattin, Pat Buehler
Принадлежит: Individual

The present invention relates to electrical test apparatuses for photovoltaic modules and methods of testing photovoltaic modules.

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Номер записи: 8
03-01-2013 дата публикации

Solar simulator light-amount evaluation apparatus, solar simulator light-amount evaluation method, solar cell evaluation apparatus, and solar cell evaluation method

Номер: US20130006556A1
Автор: Yoshihiro Nishikawa
Принадлежит: Konica Minolta Optics Inc

The provided solar simulator light-intensity evaluation apparatus and method can evaluate the characteristics of a solar cell in an arbitrary place at an arbitrary time and date, using an existing solar simulator, as follows: an estimated spectral irradiance of the natural sunlight is calculated under a measurement condition including a place and/or a time and date where and when the solar cell is measured; and an target value of adjustment and estimated light amount value of the solar simulator are calculated under the measurement condition, on the basis of the estimated spectral irradiance having been calculated, the spectral irradiance of the solar simulator, and solar cell information including a spectral sensitivity of the solar cell.

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Номер записи: 9
10-01-2013 дата публикации

Solar photovoltaic junction box

Номер: US20130009662A1
Автор: Haruyasu Komano, Kazuo Kotani, Naofumi Chiwata
Принадлежит: Hitachi Cable Ltd

A solar photovoltaic junction box for being electrically connected to a solar cell array. The junction box comprises a plurality of input branch lines electrically connected to solar cell strings, an output aggregate line that converges the plurality of branch lines, a back-flow preventing diode provided on each of the branch lines, a capacitor parallel-connected to each of the back-flow preventing diodes, an AC voltage generator that is provided on the aggregate line to allow an AC voltage to be applied to the solar cell array, a measuring means for measuring an alternating current flowing in the solar cell array, and a control unit comprising an malfunction determination portion for determining a malfunction in the solar cell array on the basis of the AC voltage applied by the AC voltage generator and the alternating current measured by the measuring means.

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Номер записи: 10
07-02-2013 дата публикации

Method and system for characterizing efficiency impact of interruption defects in photovoltaic cells

Номер: US20130035881A1
Автор: Choon (George) Hoong Hoo, Choon Wai Chang, Jia-Jie Patrick Yin, Johan Degreeve, Kristiaan Van Rossen, Lieve Govaerts, Patrick Tung-Sing Pak
Принадлежит: KLA Tencor Corp

A system for characterizing interruption defect induced efficiency loss in a photovoltaic cell includes an inspection system configured to acquire inspection data from a photovoltaic cell, a control system configured to: receive the inspection data acquired from the photovoltaic cell, identify one or more interruption defects in one or more fingers of an electrode of the one photovoltaic cell utilizing the inspection data, determine a spatial parameter associated with at least one of the identified interruption defects and one or more floating finger portions of the one or more fingers created by two or more identified interruption defects, determine an interruption-defect-induced efficiency loss of the photovoltaic cell based on the determined spatial parameter associated with the at least one of the identified interruption defects and the floating finger portions of the one or more fingers created by two or more identified interruption defects.

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Номер записи: 11
14-02-2013 дата публикации

Photovoltaic Array Systems, Methods, and Devices with Improved Diagnostics and Monitoring

Номер: US20130038129A1
Автор: Paul Bundschuh, William C. Alexander
Принадлежит: Ideal Power Converters Inc

Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array by automatically disconnecting portions of the array during normal service (when load is not maximum, and observing the resulting change in electrical characteristics. More intensive diagnostic procedures can be launched if needed. One embodiment provides for performing monitoring or diagnostic operations on the array in daylight or at night. Another embodiment allows monitoring or diagnostic operations to be performed on a portion of the array while other parts of the array continue to collect energy. Yet another embodiment provides a safety mode for an array for maintenance or during emergencies.

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Номер записи: 12
07-03-2013 дата публикации

Solar cell structures, photovoltaic panels and corresponding processes

Номер: US20130056069A1
Автор: Henry Hieslmair
Принадлежит: Nanogram Corp

Photovoltaic modules comprise solar cells having doped domains of opposite polarities along the rear side of the cells. The doped domains can be located within openings through a dielectric passivation layer. In some embodiments, the solar cells are formed from thin silicon foils. Doped domains can be formed by printing inks along the rear surface of the semiconducting sheets. The dopant inks can comprise nanoparticles having the desired dopant.

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Номер записи: 13
21-03-2013 дата публикации

Photovoltaic system with managed output and method of managing variability of output from a photovoltaic system

Номер: US20130068284A1
Автор: Greg Beardsworth, Jason C. JONES, Matt Campbell, Steven M. Kraft
Принадлежит: Individual

Photovoltaic systems with managed output and methods for managing variability of output from photovoltaic systems are described. A system includes a plurality of photovoltaic modules configured to receive and convert solar energy. The system also includes a sensor configured to determine an orientation for each of the plurality of photovoltaic modules, the orientations based on a maximum output from the photovoltaic system. The system also includes an orientation system configured to alter the orientation of one or more of the plurality of photovoltaic modules to provide a reduced output from the photovoltaic system, the reduced output less than the maximum output.

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Номер записи: 14
30-05-2013 дата публикации

Power generation apparatus

Номер: US20130138259A1
Автор: Masayuki Yokoyama
Принадлежит: Sony Corp

A power generation apparatus includes a power calculation unit configured to receive voltage information and temperature information from a power generation module, and calculate power generation information of the power generation module based on the received voltage information and temperature information.

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Номер записи: 15
06-06-2013 дата публикации

Automatic store and method for storing plates of electronic circuits

Номер: US20130140137A1
Автор: Andrea BACCINI
Принадлежит: Applied Materials Italia Srl

An automatic store and a method for storing plates of electronic circuits comprising a feed belt that feeds the plates of electronic circuits along a first plane (F); collection boxes positioned along at least one side of the feed belt and in which the plates of electronic circuits fed by the feed belt are grouped together according to quality classes; and one or more clearing stations disposed in cooperation with the feed belt in order to position the plates of electronic circuits in the respective collection boxes. The store comprises at least two rows of collection boxes disposed along at least one side of the feed belt, and a movement unit associated with the collection boxes to discharge the filled collection boxes and to position new collection boxes to be filled.

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Номер записи: 16
13-06-2013 дата публикации

Method and apparatus for photovoltaic device manufacture

Номер: US20130146576A1
Автор: Imran Khan, Jigish Trivedi, Markus Gloeckler, Thomas Truman
Принадлежит: First Solar Inc

A apparatus and method for manufacturing a photovoltaic module includes components for heating the module and applying an electrical bias to the module to improve photovoltaic module performance and manufacture multiple photovoltaic modules with similar performance.

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Номер записи: 17
01-08-2013 дата публикации

Method and apparatus for measuring photovoltaic cells

Номер: US20130194564A1
Автор: Chris Stapelmann, Johannes Kirchner
Принадлежит: SolarWorld Industries America Inc

A solar simulator is disclosed having a test chamber for receiving a photovoltaic device for testing, an illumination source for selectively illuminating the photovoltaic device to produce a test signal therefrom, a spectrophotometer for providing a measurement of the spectral distribution of the output of the illumination source, a database containing spectral response information of monitor cell, reference device and DUT, and a computation device for receiving said test signal and said measurement, wherein the computation device converts said test signal into a test value based on said measurement.

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Номер записи: 18
22-08-2013 дата публикации

Film inspection method

Номер: US20130213814A1
Автор: Jianjun Wang, LONG Cheng, Markus Gloeckler, Oleh Petro Karpenko
Принадлежит: First Solar Inc

A method for forming a defect marker on a thin film of a photovoltaic device by plating to detect pinholes and/or electrical shunts during device fabrication is disclosed. Also disclosed is a system for implementing such a method.

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Номер записи: 19
26-09-2013 дата публикации

Energy recovery from a photovoltaic array

Номер: US20130249297A1
Автор: Shinichi Takada, Toru Takehara
Принадлежит: PACEO CORP

An example of an apparatus includes an intelligent node having a monitoring module for controlling electrical connections to other intelligent nodes in a photovoltaic array, redundant means of communication for exchanging data and commands with other intelligent nodes, a serial-parallel selector for combining output power from a photovoltaic panel connected to the monitoring module with output power from photovoltaic panels connected to monitoring modules in other intelligent nodes, and a bypass selector for excluding power from a photovoltaic panel from the output of a photovoltaic array. An example of a method includes selecting a combination of serial and parallel electrical connections between photovoltaic panels to output a maximum amount of power from a photovoltaic array, reconfiguring the photovoltaic array into a plurality of new serial and parallel combinations, and selecting and restoring the combination having the maximum amount of output power corresponding to new operating conditions for the array.

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Номер записи: 20
26-09-2013 дата публикации

Device and method for testing a solar module

Номер: US20130249588A1
Автор: Bruno Daugy
Принадлежит: KOMAX HOLDING AG

A test device for testing a solar module includes a transfer unit for transporting the solar module through the test device, an irradiation unit for irradiating the solar module, an imaging unit for optically capturing an image of the solar module and a tapping device for sensing parameters of the solar module and/or for supplying voltage to the solar module. The tapping device includes a contact bar on which a contact surface positioned on the solar module can glide or slide along during the transport process in order to generate an electrical connection. The contact surface is provided by a contact device that can be temporarily attached to the solar module.

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Номер записи: 21
24-10-2013 дата публикации

Method and system for measuring the integrity of a power converter

Номер: US20130282313A1
Автор: David H. Friedman, Norbert H. Wank
Принадлежит: INFINIREL CORP

A method of measuring integrity of a pulse-width modulated power converter may include the steps of monitoring data associated with an input and an output of the power converter. Then correlating the data to identify degradation in performance of the power converter. A system for measuring integrity of a pulse-width modulated power converter. Current sensors may sense input and output currents of the power converter. A programmable controller may be loaded with an integrity measuring algorithm that may analyze data from the current sensors. An impending failure of the power converter may be indicated as a result of the analysis of the data.

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Номер записи: 22
07-11-2013 дата публикации

Solar simulator and method for operating a solar simulator

Номер: US20130294045A1
Автор: Nico Morgenbrod
Принадлежит: OSRAM GMBH

A solar simulator with at least one lamp module, where the luminous module contains multiple light generating units is disclosed. Each of the light generating units contain at least one semiconductor light source, which generate light in a plurality of separately controllable wavelength ranges. Disposed downstream from the light generating units is a light-concentrating primary optical unit. A light-homogenizing secondary optical unit is likewise disposed downstream of the light generating units. And an imaging tertiary optical unit is disposed downstream of the secondary optical unit. A method for operating the solar simulator and the light generating units in such a way that the solar simulator generates light radiation that alters over time is also disclosed.

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Номер записи: 23
21-11-2013 дата публикации

Photovoltaic Array Systems, Methods, and Devices with Improved Diagnostics and Monitoring

Номер: US20130307336A1
Автор: Alexander William C., Bundschuh Paul
Принадлежит: IDEAL POWER CONVERTERS, INC.

Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array by automatically disconnecting portions of the array during normal service (when load is not maximum, and observing the resulting change in electrical characteristics. More intensive diagnostic procedures can be launched if needed. One embodiment provides for performing monitoring or diagnostic operations on the array in daylight or at night. Another embodiment allows monitoring or diagnostic operations to be performed on a portion of the array while other parts of the array continue to collect energy. Yet another embodiment provides a safety mode for an array for maintenance or during emergencies. 17.-. (canceled)8. A method of monitoring a photovoltaic array with a plurality of strings of photovoltaic cells comprising the following steps:automatically electrically disconnecting one or more strings of photovoltaic cells from a photovoltaic array;performing a diagnostic test on the strings remaining connected;initiating an alert condition if results of the diagnostic test are outside of an expected range; andautomatically electrically reconnecting the one or more strings.9. The method of claim 8 , wherein said diagnostic test uses a bidirectional AC-DC converter to apply a DC potential to said at least one string of photovoltaic cells.10. The method of claim 8 , wherein said diagnostic test performs a differential comparison of the output of said modified array with respect to the electrical characteristics of the entire array.11. The method of claim 8 , wherein said diagnostic test performs an IV curve trace on ones of said cells.12. The method of claim 8 , wherein said steps are repeated claim 8 , from time to time during normal operation claim 8 , for each said string.13. The method of claim 8 , wherein said automatically disconnecting step is performed at ...

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Номер записи: 24
05-12-2013 дата публикации

PHOTOVOLTAIC DEVICE FOR MEASURING IRRADIANCE AND TEMPERATURE

Номер: US20130321013A1
Автор: King David L., Lesniak Michael J., Pisklak Stephen G., Ramesh Narayan
Принадлежит: Dow Global Technologies LLC

A solar array system includes a plurality of power-generator modules, each power-generator module having an identical form factor and comprising a plurality of photovoltaic cells wired for power generation. The system also includes at least one sensor module having a substantially identical appearance and form factor as the power-generator modules and comprising a like plurality of photovoltaic cells. The operational state of the system is monitored by an array performance monitor, which measures signals sent from the various modules. At least one photovoltaic cell in the sensor module delivers a short-circuit current signal to the array performance monitor and at least one photovoltaic cell in the sensor module delivers an open-circuit voltage signal to the array performance monitor. These signals are used to calculate a theoretical power output of the array system, which is compared to the actual power output. 1. A solar array system comprising:a plurality of power-generator modules, each power-generator module having an identical form factor and comprising a plurality of photovoltaic cells wired for power generation;at least one sensor module having a substantially identical appearance and form factor as the power-generator modules and comprising a like plurality of photovoltaic cells;an array performance monitor; andwherein at least one photovoltaic cell in the sensor module delivers a short-circuit current to the array performance monitor and at least one photovoltaic cell in the sensor module delivers an open-circuit voltage to the array performance monitor.2. The solar array system of claim 1 , wherein the plurality of power-generator modules generates a first signal comprising a power output claim 1 , and wherein the at least one sensor module generates a second signal comprising at least one of the short-circuit current and the open-circuit voltage.3. The solar array system as in claim 1 , wherein the array performance monitor comprises a processor for ...

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Номер записи: 25
26-12-2013 дата публикации

Power generating component connectivity testing

Номер: US20130342216A1
Автор: Kenneth Raymond Orr
Принадлежит: SOLANTRO SEMICONDUCTOR CORP

Power generating component connectivity testing methods and apparatus are disclosed. At a power generating component, a connectivity testing condition is detected. A connectivity testing procedure is performed on detection of the connectivity testing condition, to test connectivity in a system that includes the power generating component and an unpowered electrical system. Connectivity is tested before the electrical system is connected to a power grid. An indication of connectivity can be provided by receiving connectivity information indicating connectivity between power generating components and the unpowered electrical system; and providing a representation of the connectivity between the power generating testing procedure components and the electrical system. This representation could include, for example, one or more of: a connectivity alert, a visual representation of the power generating components; and a visual representation of the electrical system.

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Номер записи: 26
02-01-2014 дата публикации

Inspecting device and inspecting method

Номер: US20140002125A1
Автор: Akira Ito, Hidetoshi Nakanishi, Iwao KAWAYAMA, Masayoshi Tonouchi
Принадлежит: Dainippon Screen Manufacturing Co Ltd, Osaka University NUC

An inspecting device serves to inspect a solar cell. The inspecting device includes an irradiation part for irradiating with pulsed light and a detection part having a detector for detecting an electromagnetic wave pulse radiated from the solar cell depending on the irradiation with the pulsed light. The detector detects an electric field intensity of the electromagnetic wave pulse depending on irradiation with probe light emitted from a light source (a femtosecond laser) of the pulsed light. Moreover, the inspecting device includes a delay part for delaying a timing for detecting the electromagnetic wave pulse in the detector. Furthermore, the inspecting device includes an electromagnetic wave pulse analysis part for detecting a negative peak of the electric field intensity in a temporal waveform of the electromagnetic wave pulse.

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Номер записи: 27
06-02-2014 дата публикации

System and method for estimating performance metrics of conservation voltage reduction (cvr) systems and volt/var optimization systems

Номер: US20140039712A1
Автор: David Gordon BELL
Принадлежит: Utilidata Inc

A system and method for estimating performance metrics of conservation voltage reduction (CVR) systems and VOLT/VAR optimization systems is disclosed.

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Номер записи: 28
27-02-2014 дата публикации

Solar Cell Plate Having Junction Box Formed Thereon

Номер: US20140053892A1
Автор: Seol Jin Tae
Принадлежит: Hanmyeong Co., Ltd

The present invention relates to a solar cell plate having a junction box formed thereon, the junction box having a housing embedded with a ribbon and a diode, and a cover, which can be attached/detached to/from the housing, and more specifically, to a solar cell plate having a junction box formed thereon, having formed on the cover, a lighting portion having an LED formed thereon, so that the LED in a light-emitting state enables easy confirmation of an abnormality in the solar cell plate. 110111122010. A solar cell plate on which a junction box comprising a housing attached to a back side of the solar cell plate and configured to have ribbons and diodes embedded therein and a cover attached to and detached from the housing is formed ,{'b': 21', '22', '20', '20', '1, 'i': 'a', 'wherein a lighting unit having LEDs formed therein is formed on an upper side of the cover so that whether or not the solar cell plate is abnormal is checked by a naked eye, and'}{'b': 20', '10', '22', '21', '11', '11, 'when the cover and the housing are coupled, the LEDs formed in the lighting unit come in contact with the ribbons and emit light when an electric current flows between the ribbons .'}2. The solar cell plate of claim 1 , wherein:{'b': 21', '20, 'the lighting unit is formed in such a way as to be embedded in the cover , and'}{'b': 24', '21, 'a transparent cover is formed outside the lighting unit in order to prevent an infiltration of moisture.'}3. The solar cell plate of claim 1 , wherein:{'b': 22', '11', '22', '22, 'i': 'a', 'the LEDs come in contact with the ribbons by way of lead wires formed on one side of the LEDs , and'}{'b': 22', '22', '11, 'i': a', 'a, 'the lead wires are formed in a spring form so that the cover is compressed and brought in contact with the housing when the cover is coupled with the housing, thereby increasing contact force between the lead wires and the ribbons .'}4. The solar cell plate of claim 1 , wherein:{'b': 21', '20, 'the lighting unit is ...

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Номер записи: 29
06-03-2014 дата публикации

Method and System For Detecting Arc Faults and Flashes Using Wavelets

Номер: US20140067291A1
Автор: Robert S. Balog
Принадлежит: Texas A&M University

A method for detecting an arc event occurring in an electrical system includes sensing a voltage using a voltage sensing device coupled to a component of the electrical system, producing a signal waveform representative of the sensed voltage using the voltage sensing device, and sampling at a predetermined frequency the voltage signal waveform to generate a plurality of sample waveforms. The method further includes applying a wavelet transform to each sample waveform to decompose them into a predetermined number of detailed waveforms using a corresponding number of successive wavelet components, dividing each detailed waveform into a plurality of segments, analyzing the plurality of segments to detect a change in one or more of the properties of the corresponding detailed waveform, and determining an occurrence of the arc event based on the duration of the detected change of one or more of characteristics of the corresponding detailed waveform.

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Номер записи: 30
27-03-2014 дата публикации

Spatially resolved imaging of opto-electrical property variations

Номер: US20140085638A1
Автор: Andreas Roelofs, Jeffrey GUEST, Maxim NIKIFOROV, Ozgun SUZER, Seth B. Darling
Принадлежит: UChicago Argonne LLC

Systems and methods for opto electric properties are provided. A light source illuminates a sample. A reference detector senses light from the light source. A sample detector receives light from the sample. A positioning fixture allows for relative positioning of the sample or the light source with respect to each other. An electrical signal device measures the electrical properties of the sample. The reference detector, sample detector and electrical signal device provide information that may be processed to determine opto-electric properties of the same.

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Номер записи: 31
01-01-2015 дата публикации

METHODS AND SYSTEMS FOR SOLAR SHADE ANALYSIS

Номер: US20150002661A1
Автор: Dimov Dmitry, Goldman Mark Alan
Принадлежит:

Some embodiments include a method of operating a computing device for performing solar shading analysis. The method can include: receiving a multimedia message from a mobile device, the multimedia message including a photograph of an image of sky reflected off of a reflective dome attached to an apparatus platform; identifying an unobstructed sky area and an obstructed sky area in the photograph; computing a shading percentage based on relative portions of the unobstructed sky area and the obstructed sky area; and generating a solar analysis report including the shading percentage, in response to receiving the multimedia message. 1. A computer server system comprising: receive a multimedia message from a mobile device over a network that is at least partially wireless, the multimedia message containing a photograph of a solar reflection apparatus;', 'extract a location of the photograph from the mobile device;', 'compute solar capacity at the location based on image analysis of the photograph; and', 'generate a solar analysis report including the solar capacity to provide for the mobile device., 'at least a computer processor configured by executable instructions to2. The computer server system of claim 1 , wherein the computer processor is further configured to associate a surface tilt of the solar reflection apparatus to the computed solar capacity in the solar analysis report.3. The computer server system of claim 1 , wherein the computer processor is further configured to associate an azimuth angle of the solar reflection apparatus to the computed solar capacity in the solar analysis report.4. The computer server system of claim 1 , wherein the computer processor is further configured to access solar irradiation data from an external solar database; and wherein the computer processor is configured to compute the solar capacity by matching the location to the solar irradiation data and adjusting for shading information captured by the photograph.5. The computer ...

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Номер записи: 32
07-01-2016 дата публикации

METHOD AND DEVICE FOR DETECTING AN ELECTRIC ARC IN A PHOTOVOLTAIC INSTALLATION

Номер: US20160003883A1
Автор: Chaintreuil Nicolas, Gouy-Pailler Cédric, Lespinats Sylvain, PLISSONNIER Alexandre
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

Method for detecting an electric arc in a photovoltaic installation, characterized in that it comprises the following steps: 1. Method for detecting an electric arc in a photovoltaic installation , comprising:measuring voltage values at at least one site of an electrical circuit of the photovoltaic installation;digitizing the measured voltage values so as to form a data sampling x;computing a first indicator of presence of the electric arc, based on a statistical computation on the data sampling x, from among a variance, a value analogous to the variance, or an interquartile range of the data sampling;computing a second indicator of presence of the electric arc, based on a statistical computation on the data sampling based on one or more estimations of at least one of a mean and a median of the data sampling;comparing the first and second indicators of presence of the electric arc with respective thresholds so as to deduce therefrom a presence or absence of the electric arc within the photovoltaic installation.2. Method for detecting an electric arc in a photovoltaic installation according to claim 1 , wherein at least one of (i) the step of computing the first indicator of presence of the electric arc is based on the value analogous to the variance and takes into account a forgetting factor φ claim 1 , and (ii) the step of computing the second indicator of presence of the electric arc takes into account a forgetting factor φ.3. Method for detecting an electric arc in a photovoltaic installation according to claim 2 , wherein the forgetting factor is combined with each sampling datum x so as to make it possible to define an ever smaller weight to the oldest data of the data sampling at each iteration claim 2 , so as to take into account the history of the measured voltage values and focus an algorithm on a near time period.4. Method for detecting an electric arc in a photovoltaic installation according to claim 2 , wherein the forgetting factor depends on a sampling ...

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Номер записи: 33
04-01-2018 дата публикации

SOLAR PANEL INSPECTION USING UNMANNED AERIAL VEHICLES

Номер: US20180003656A1
Автор: Blanc-Pâques Fabien, Michini Bernard J., Steakley Edward Dale
Принадлежит: Unmanned Innovation Inc.

Methods, systems, and program products of inspecting solar panels using unmanned aerial vehicles (UAVs) are disclosed. A UAV can obtain a position of the Sun in a reference frame, a location of a solar panel in the reference frame, and an orientation of the solar panel in the reference frame. The UAV can determine a viewing position of the UAV in the reference frame based on at least one of the position of the Sun, the location of the solar panel, and the orientation of the solar panel. The UAV can maneuver to the viewing position and point a thermal sensor onboard the UAV at the solar panel. The UAV can capture, by the thermal sensor, a thermal image of at least a portion of the solar panel. A server onboard the UAV or connected to the UAV can detect panel failures based on the thermal image. 1. A system comprising one or more processors , and a non-transitory computer-readable medium including one or more sequences of instructions that , when executed by the one or more processors , cause the system to perform operations comprising:determining a flight path for an unmanned aerial vehicle (UAV) for inspection of one or more solar panels;navigating the UAV according to the flight path; andobtaining, at a plurality of geo-spatial locations, respective thermal images of the one or more solar panels;determining, based on the obtained thermal images, whether the one or more solar panels or one or more solar cells of a respective solar panel failed; andgenerating a report indicating whether the one or more solar panels, or the one or more solar cells failed.2. The system of claim 1 , the operations further comprising:obtaining a position of the Sun in a reference frame, a location of a solar panel in the reference frame, and an orientation of the solar panel in the reference frame;determining a viewing position of the UAV in the reference frame based on at least one of the position of the Sun, the location of the solar panel, and the orientation of the solar panel; ...

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Номер записи: 34
01-01-2015 дата публикации

Solar Power Generation Estimation System, Device, and Method

Номер: US20150006080A1
Автор: SATO Yasuo, Yamazaki Jun
Принадлежит:

The power generation amount of a PV device is estimated by multiple light receiving devices, which are dispersed in a predetermined area and each of which outputs a receive light signal corresponding to the amount of received light, and by an estimation device connected to the multiple light receiving devices through a communication network. The estimation device predicts the cloud shadow projected on the ground based on the received light signal obtained multiple times from a predetermined number of light receiving devices of the multiple light receiving devices. Then, the estimation device estimates the amount of power generated by the PV device installed in the predetermined area, based on the predicted cloud shadow. 111-. (canceled)12. A solar power generation estimation system for estimating the power generation amount of a photovoltaic power generation device ,wherein the solar power generation estimation system comprises:a plurality of light receiving devices that are dispersed in a predetermine area and each of which outputs a received light signal corresponding to the amount of received light; andan estimation device connected to the plurality of light receiving devices through a communication network,wherein the estimation device includes the steps of:predicting the cloud shadow projected on the ground based on the received light signal obtained a plurality of times from a predetermined number of light receiving devices of the plurality of light receiving devices;estimating the amount of power generated by the photovoltaic power generation device installed in the predetermined area, based on the predicted cloud shadow; andidentifying a given received light signal with a predetermined increasing or decreasing trend in a predetermined period of time, from the plurality of received light signals, to predict the cloud shadow boundary which is the boundary formed by the cloud shadow, based on the installation point of the light receiving device that has output ...

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Номер записи: 35
02-01-2020 дата публикации

SYSTEM FOR TUNING A PHOTOVOLTAIC POWER GENERATION PLANT FORECAST WITH THE AID OF A DIGITAL COMPUTER

Номер: US20200004908A1
Автор: Hoff Thomas E.
Принадлежит:

A system for tuning a photovoltaic power generation plant forecast with the aid of a digital computer is provided. Global horizontal irradiance (GHI), ambient temperature and wind speed for a photovoltaic power generation plant over a forecast period are obtained. Simulated plane-of-array (POA) irradiance is generated from the GHI and the plant's photovoltaic array configuration as a series of simulated observations. Inaccuracies in GHI conversion are identified and the simulated POA irradiance at each simulated observation is corrected based on the conversion inaccuracies. Simulated module temperature is generated based on the simulated POA irradiance, ambient temperature and wind speed. Simulated power generation over the forecast period is generated based on the simulated POA irradiance, simulated module temperature and the plant's specifications and status. Inaccuracies in photovoltaic power conversion are identified and the simulated power generation at each simulated input power level is corrected based on the power conversion inaccuracies. 1. A system for tuning a photovoltaic power generation forecast with the aid of a digital computer , comprising:at least one irradiance sensor configured to regularly measure over an observation period a time series of solar irradiance values for a physical location at which a photovoltaic power generation plant is situated; regularly obtain the time series of solar irradiance values from the irradiance sensor;', 'regularly obtain ambient temperature for the physical location; and', 'obtain photovoltaic array configuration of the photovoltaic power generation plant, and global horizontal irradiance, global horizontal irradiance clear sky indexes, wind speeds, cloud data, and alternating current outputs of the photovoltaic power generation plant as measured over the observation period for the physical location;', 'simulate a time series of global horizontal irradiance over the observation period comprising each solar ...

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Номер записи: 36
13-01-2022 дата публикации

ABNORMALITY DETECTING SYSTEM FOR A SOLAR POWER GRID

Номер: US20220014015A1
Автор: Hsu Chun-Chi
Принадлежит:

A system is provided to be disposed between a solar power module and a power inverter. The solar power module outputs a solar power signal to the power inverter. The system includes a circuit protecting unit and a processor. The processor obtains an amount of electrical current outputted by the power inverter and an amount of electrical current flowing through a current detector of the circuit protecting unit. When it is determined that the amount of electrical current outputted by the power inverter is zero and the amount of the electrical current flowing through the current detector is non-zero, the processor controls a power switch of the circuit protecting unit to switch to an open circuit state. 1. An abnormality detecting system for a solar power grid , the abnormality detecting system to be disposed between a solar power module and a power inverter of the solar power grid , the solar power module including a solar panel , and a first output node and a second output node that cooperatively output a solar power signal in a form of a direct current signal , the power inverter being electrically connected to the solar power module to receive the solar power signal therefrom and being configured to convert the solar power signal to a converted power signal in a form of an alternating current (AC) signal and to output the converted power signal , the abnormality detecting system comprising: an input component including a first port and a second port that are configured to be electrically connected respectively to the first output node and the second output node, and being configured to receive the solar power signal from the solar power module through said first and second ports,', 'a power switch electrically connected to said first port,', 'an output component electrically connected between said power switch and the power inverter,', 'a current detector electrically connected between said input component and said output component, and configured to measure an ...

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Номер записи: 37
05-01-2017 дата публикации

PHASE CHANGE MATERIALS FOR COOLING ENCLOSED ELECTRONIC COMPONENTS, INCLUDING FOR SOLAR ENERGY COLLECTION, AND ASSOCIATED SYSTEMS AND METHODS

Номер: US20170005615A1
Автор: Burvill Hayden Graham, Durbin William, Fairbanks Dylan Miller, Treynor Chiaki, von Behrens Peter Emery
Принадлежит:

The present technology is directed generally to phase change materials for cooling enclosed electronic components, including for solar energy collection, and associated systems and methods. In particular embodiments, a system directs warm air through an airflow path in thermal communication with a phase change material to liquefy the phase change material and cool the air. The system also directs the cool air into thermal communication with electronic components to cool the electronic components via conduction and/or convection. 1. A solar energy collection system , comprising:an enclosed solar collection structure having a light-transmissive surface;a plurality of solar concentrators positioned within the enclosed solar collection structure to receive solar radiation passing into the solar collection structure;at least one receiver positioned to receive solar radiation from at least one of the plurality of solar concentrators;an electronics enclosure positioned within the solar collection structure;an electronic component positioned at least partially within the electronics enclosure;a phase change material within the solar collection structure, wherein the phase change material is spaced apart from the electronic component, and wherein the phase change material has a melting point below a target temperature of the electronic component;an airflow path positioned between the phase change material and the electronic component;an actuatable component in fluid communication with the airflow path and changeable to regulate a flow of air along the airflow path; anda controller coupled to the actuatable component to adjust the actuatable component between a first configuration with the actuatable component allowing a first flow of air to pass along the airflow path, and a second configuration with the actuatable component allowing no airflow or a second flow of air less than the first flow of air to pass along the airflow path.2. The system of wherein the melting point of ...

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Номер записи: 38
07-01-2016 дата публикации

Safe Photovoltaic System

Номер: US20160006392A1
Автор: Höft Wolfgang
Принадлежит:

The invention provides a fault detection system in a photovoltaic system which is able to identify a system state on the basis of a first and optionally a second measured data profile and is thus able to distinguish error states from the operating state of the system. 1. A method for detecting an electrical fault in a photovoltaic system , comprising the steps of:measuring at least a first data profile of a first electrical parameter in the photovoltaic system, in particular in a string of the photovoltaic system;evaluating the first measured data profile;identifying a system state based on the first measured data profile;storing the system state in a state memory.2. The method as claimed in claim 1 , wherein the system state can assume at least two predefined states claim 1 , namely an operating state or an error state.3. The method as claimed in claim 1 , further comprising the additional steps of:measuring a second data profile of a second electrical parameter of the photovoltaic system, in particular of the string of the photovoltaic system;synchronously evaluating the first and second measured data profiles;identifying a system state based on a combination of the evaluation results of the first and second measured data profiles.4. The method as claimed in claim 1 , wherein the first electrical parameter is a system voltage or a string voltage; and/or wherein the second electrical parameter is a system current or a string current.5. The method as claimed in the preceding claim claim 1 , wherein the first measured data profile is raised to a minimum voltage level greater than zero.6. The method as claimed in claim 1 ,wherein the photovoltaic system comprises at least an inverter for producing an a.c. voltage from the d.c. voltage of the photovoltaic system; andwherein the evaluating of the measured data profiles is performed below a minimum operating voltage of the inverter.7. The method as claimed in claim 1 , further comprising:retrieving the system state from ...

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Номер записи: 39
07-01-2021 дата публикации

Power conversion device, control device, server and system

Номер: US20210006091A1
Автор: Songhao YIN, Takayuki Nagakura
Принадлежит: Fuji Electric Co Ltd

A power conversion device which converts electrical power generated by a distributed energy resource into electrical power corresponding to a power system is provided, comprising a communication unit which periodically receives, via communication, reception information indicating whether an accident has occurred in the power system, a disconnection unit which disconnects the distributed energy resource from the power system when the communication unit receives the reception information indicating accident occurrence, and a control unit which starts an islanding determination process for determining whether the distributed energy resource is in an islanding state by detecting a change in AC characteristics in the power system, when the communication unit does not receive the reception information for a predetermined first period.

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Номер записи: 40
07-01-2021 дата публикации

SOLAR ARRAY COMMUNICATIONS

Номер: US20210006203A1
Автор: WANG Fan, Wang Jing
Принадлежит:

A solar panel array includes panel bridges associated with solar panels and a signal bridge associated with the converter for communicating with the panel bridges. 1. A solar panel array communications system comprising:a converter with AC outputs and DC inputs, the AC outputs for connection to an AC source;the converter DC inputs coupled to a panel controller via first and second converter conductors;the panel controller coupled to n panels where (n 22 1);a first current sensor/injector proximate to the first converter conductor;the panel controller including a panel bridge, n switches, and a second translator sender;the panel bridge including first and second panel bridge conductors with a diode in parallel with a signal bridge therebetween;first and second junctions, the first junction where the first converter conductor joins with the first panel bridge conductor and the second junction where the second converter conductor joins with the second panel bridge conductor;the first of the n switches selectively interconnecting a first of the n panels with a second of the n panels;the last of the n switches selectively interconnecting the second junction and the last of the n panels;the second translator sender coupled to each of the switches and to a second current sensor/injector;the second current sensor/injector proximate to the first converter conductor and between the first current sensor/injector and first junction;a system controller including a first translator sender, an input/output block, and a backup power supply;the first translator sender coupled to the first current sensor/injector, the input/output block, and the backup AC power supply; and,the system controller for commanding first and second settings of the switches via use of first and second codes passed between the current sensors/injectors;wherein involatile memory in the panel controller stores an indication of the last commanded switch setting.2. The solar panel array communications system of ...

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Номер записи: 41
02-01-2020 дата публикации

Electrochemical UV Sensor Using Carbon Quantum Dots

Номер: US20200006588A1
Автор: Staser John Adams
Принадлежит:

A photoelectrode () for use in a photocell () comprises a graphene substrate () functionalized with carbon quantum dots (CQDs) (). A photocell () comprises a photoelectrode (), a counter electrode (), and an electrolyte (). The electrolyte () may be a solid polymer electrolyte. The photocell () may be an electrochemical UV sensor. A method for sensing UV radiation comprises quantifying a power density of UV radiation using an electrochemical UV () sensor comprising CQDs () as a photoactive material. The CQDs () may be nitrogen-doped CQDs. 1. A photoelectrode for use in a photocell comprising:a graphene substrate functionalized with carbon quantum dots (CQDs).2. The photoelectrode of claim 1 , wherein the graphene substrate comprises carbon paper and graphene oxide deposited thereon.3. A photocell comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the photoelectrode of ;'}a counter electrode; andan electrolyte.4. The photocell of claim 3 , wherein the electrolyte is a solid polymer electrolyte.5. The photocell of claim 3 , wherein the photocell is flexible.6. The photocell of claim 3 , wherein the photocell is an electrochemical UV sensor.7. The photocell of claim 6 , wherein the sensor is able to quantify the intensity of UV radiation.8. The photocell of claim 6 , wherein the CQDs are nitrogen-doped CQDs (N-CQDs).9. The photocell of claim 6 , wherein the electrolyte is a solid claim 6 , flexible polymer electrolyte.10. A method for harvesting and storing energy comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'absorbing light using a photocell comprising the photoelectrode of ; and'}storing energy produced from the light in the photocell.11. A method for sensing UV radiation comprising:quantifying a power density of UV radiation using an electrochemical UV sensor comprising carbon quantum dots (CQDs) as a photoactive material.12. The method of claim 11 , wherein quantifying comprises measuring a rate at which a cell voltage of the ...

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Номер записи: 42
02-01-2020 дата публикации

Solar modules having solar sub cells with matrix connections between the solar sub cells

Номер: US20200007078A1
Автор: Boris Vatelmacher, Gabi PAZ
Принадлежит: SOLARWAT LTD

A solar power generation system for providing a predetermined operating power level and predetermined operating voltage level requirement is provided. The system includes at least one solar-array panel. Each of the solar-array panels includes a multiplicity of PV solar sub cells. A preconfigured number of the PV solar sub cells are electrically connected in series to form a serial-unit or each forming an individual serial unit having just one PV solar sub cell. A preconfigured number of the serial units are electrically connected in series to form a string of serial-units. The PV solar sub cells are also connected in parallel to neighboring sub cells to form a crisscross matrix array that facilitates bypassing malfunctioning serial units, thereby improving the performance of the system. A PV solar sub cell is at least 50% smaller in area than a regular PV solar cell.

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Номер записи: 43
12-01-2017 дата публикации

THIN-FILM COATING APPARATUS FOR APPLYING ENHANCED PERFORMANCE COATINGS ON OUTDOOR SUBSTRATES

Номер: US20170008022A1
Автор: deVos John Arthur, Gage Adam J.
Принадлежит:

A thin-film coating applicator assembly is disclosed for coating substrates in outdoor applications. The innovative thin-film coating applicator assembly is adapted to apply performance enhancement coatings on installed photovoltaic panels and glass windows in outdoor environments. The coating applicator is adapted to move along a solar panel or glass pane while applicator mechanisms deposit a uniform layer of liquid coating solution to the substrate's surface. The applicator assembly comprises a conveyance means disposed on a frame. Further disclosed are innovative applicator heads that comprise a deformable sponge-like core surrounded by a microporous layer. The structure, when in contact with a substrate surface, deposits a uniform layer of coating solution over a large surface. 1. A portable coating assembly for applying a performance enhancement coating on a solar panel , wherein said solar panel is part of an existing outdoor solar panel array comprising:i) a support structure having a top side and a bottom side,ii) one or more performance enhancement coating applicator mechanisms disposed on the support structure for depositing said performance enhancement coating on said solar panel; andiii) a motorized conveyance means for moving the one or more performance enhancement coating applicator mechanisms relative to the solar panel, wherein said conveyance means comprises one or more rollers, and whereby the speed of the motorized conveyance means is determined at least in part from at least one environmental parameter measured by at least one sensor, wherein the sensor is part of a feedback loop.2. The portable coating assembly of claim 1 , wherein the feedback loop comprises a signal processing circuit adapted to correlate the data extracted from the sensor signal to one or more characteristics of the performance-enhancement coating deposited by the portable coating assembly on said solar panel.3. The portable coating assembly of claim 2 , wherein the signal ...

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Номер записи: 44
10-01-2019 дата публикации

Invertible Drone for Selective Power Capture

Номер: US20190009916A1
Автор: Von Novak William Henry
Принадлежит:

Various embodiments include methods for operating a photovoltaic-powered drone having a photovoltaic surface on one side of at least one of wing and/or body of the drone. Various embodiments may include flying the drone in a first drone attitude that directs the photovoltaic surface on the one side of the drone to face in a first direction toward a first source of light. Various embodiments may also include inverting the drone in flight to a second drone attitude that directs the photovoltaic surface toward a second direction toward a second source of light different from the first source of light. The artificial light may be transmitted from a ground-based beam emitter. 1. A method of operating a drone having photovoltaic cells on one side of the drone (the “photovoltaic surface”) , the method comprising:flying the drone in a first drone attitude that directs the photovoltaic surface on the one side of the drone to face in a first direction toward a first source of light; andinverting the drone in flight to a second drone attitude that directs the photovoltaic surface toward a second direction toward a second source of light different from the first source of light.2. The method of claim 1 , further comprising:receiving data input related to inverting the drone; anddetermining whether to invert the drone to the second drone attitude in response to receiving the data input related to inverting the drone.3. The method of claim 2 , wherein the received data input is a measure of incident light on the photovoltaic surface claim 2 , and wherein determining whether to invert the drone to the second drone attitude is based on the measure of incident light on the photovoltaic surface being less than a light reception threshold.4. The method of claim 2 , wherein the received data input is a first measure of incident light on the one side of the drone and a second measure of incident light on another side of the drone opposed to the one side claim 2 , and wherein determining ...

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Номер записи: 45
08-01-2015 дата публикации

SYSTEM AND METHOD FOR MODELING AND CHARACTERIZING OF PHOTOVOLTAIC POWER SYSTEMS

Номер: US20150012258A1
Автор: Caine Holden R.
Принадлежит:

A system and method of the invention adjusts an existing system model of a PV system to provide better information regarding projected performance of the PV system. The resulting model enables a user to more accurately compare actual versus expected performance, thereby quantifying performance degradation due to soiling, aging and component failures while also verifying the design assumptions. A method of the invention includes selecting days of historical data that will result in the highest quality results (e.g., high energy output, minimal clouds); determining key metrics and relationships between measured data and site characteristics to identify how to optimize model parameters; running simulations of the model over the key days to determine the best value for each model parameter that results in the closest match between the model and measured system output; and conducting iterations of the simulations to adjust various model parameters. 1. A system for modeling photovoltaic power (PV) systems comprising:a plurality of photovoltaic strings for converting sunlight into electrical energy;a combiner for combining output signals of said plurality of photovoltaic strings;an inverter for converting the DC output signals of a plurality of combiners into AC power; anda sensor for detecting data associated with said plurality of photovoltaic strings; a monitoring system for monitoring the performance of a photovoltaic array, comprising:a memory;a processor in connection with the memory, the processor operable to execute software modules, the software modules comprising a sensor or set of sensors for measuring at least one of ambient conditions including irradiance, temperature, wind speed, wind direction, humidity, rain, and snow;a PV system model module operable to provide data and user interfaces associated with the determination of a performance index value defined as a ratio of measured power output to power output calculated from a PV system model;a supplemental ...

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Номер записи: 46
10-01-2019 дата публикации

SOLAR POWER SYSTEM FOR MARINE DOCK

Номер: US20190011079A1
Автор: Levin Kerry Ira
Принадлежит:

A structure includes a bracket affixed to a substrate. A bracket pole member is affixed to the bracket. A bracket back brace is affixed to the bracket. The bracket back brace is affixed to the substrate. In an embodiment, the bracket back brace includes a back brace member having a beveled end with a threaded bolt attached thereto. The threaded bolt being secured through the bracket via a nut. In an embodiment, the bracket back brace is affixed to a strut of the substrate, and the back brace member has a non-beveled end. The non-beveled end is inserted into either (i) a shackle coupling rotatably affixed to a hinge plate affixed to the strut, or (ii) a side-mount collar affixed to the strut. 1. A structure , comprising:a bracket affixed to a substrate;a bracket pole member affixed to said bracket;a bracket back brace affixed to said bracket; andsaid bracket back brace affixed to said substrate.2. The structure of claim 1 , wherein said bracket back brace comprises a back brace member having a beveled end with a threaded bolt attached thereto claim 1 , said threaded bolt being secured through said bracket via a nut.3. The structure of claim 3 , wherein said bracket back brace is affixed to at least one strut of said substrate selected from the group consisting of: a cross-wise strut and a length-wise strut.4. The structure of claim 3 , wherein said bracket back brace comprises a back brace member having a non-beveled end inserted into a shackle coupling claim 3 , said shackle coupling being rotatably affixed to a hinge plate claim 3 , and said hinge plate being affixed to said strut.5. The structure of claim 4 , wherein said strut is a length-wise strut.6. The structure of claim 3 , wherein said bracket back brace comprises a back brace member having a non-beveled end inserted into a side-mount collar claim 3 , said side-mount collar being affixed to said strut.7. The structure of claim 6 , wherein said strut is a cross-wise strut.8. The structure of claim 1 , ...

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Номер записи: 47
14-01-2021 дата публикации

Systems and Methods for Monitoring Transformers and Performing Actions Based on the Monitoring

Номер: US20210011093A1
Автор: Joe Beaudet, Sergio Angeli
Принадлежит: GRID20/20 Inc

A transformer monitoring system that has one or more monitoring devices coupled to respective distribution transformers, and the monitoring devices each have a network device. The network devices monitor operational data of their respective distribution transformer and perform a monitoring device action based upon the operational data monitored. Further, the monitoring device transmits operational data and data indicative of the monitoring device action via the network device. The system also has a central computing device communicatively coupled to the one or more monitoring devices via the network devices and there is a processor resident on the central computing device that receives the operational data and the data indicative of the monitoring device action, interprets the received data, and performs an action based upon the operational data and the data indicative of the monitoring device action.

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Номер записи: 48
15-01-2015 дата публикации

PHOTOVOLTAIC SYSTEM

Номер: US20150013744A1
Автор: Kim Dong Hyun, KIM Jong Bae, SEON Jong Kug
Принадлежит: LSIS CO., LTD.

Disclosed is a photovoltaic system including a power optimizer, capable of minimizing noise occurring due to shading, an error in an output power of a photovoltaic module, etc. while a maximum power point tracking (MPPT) algorithm is performed. The photovoltaic system includes a photovoltaic module; a power optimizer; and an inverter, wherein the power optimizer includes: an input unit configured to receive an output power of the photovoltaic module; a sensing unit configured to sense an output voltage and an output current of the photovoltaic module; and a controller configured to control an output of the power optimizer, by comparing the presently-sensed current with a previously-sensed current. 1. A photovoltaic system , comprising:a photovoltaic module;a power optimizer; andan inverter,wherein the power optimizer includes:an input unit configured to receive an output power of the photovoltaic module;a sensing unit configured to sense an output voltage and an output current of the photovoltaic module; anda controller configured to control an output of the power optimizer, by comparing the presently-sensed current with a previously-sensed current.2. The photovoltaic system of claim 1 , wherein the power optimizer further includes:a DC-DC converter configured to lower or boost an input voltage of the power optimizer by a preset reference value, with respect to an output voltage of the power optimizer, while a maximum power point tracking (MPPT) algorithm is performed by the controller;a bypass unit configured to bypass an output of the power optimizer under control of the controller; anda power supply unit configured to supply power to the sensing unit, the controller, the DC-DC converter, and the bypass unit, based on the power received by the input unit.3. The photovoltaic system of claim 2 , wherein if a difference between the presently-sensed current and the previously-sensed current exceeds a preset reference value claim 2 , the controller stops the MPPT ...

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Номер записи: 49
15-01-2015 дата публикации

MAXIMUM POWER POINT TRACKING (MPPT)

Номер: US20150013748A1
Автор: GARABANDIC Djordje
Принадлежит:

Disclosed are methods, systems, and other implementations, including a method that includes measuring a plurality of samples of power produced by a photovoltaic (PV) array over a first interval of time, determining, based on the measured plurality of samples a non-linear predictive model of a behavior of the power produced by the PV array, and performing a first adjustment of the PV array's voltage at a second time instant subsequent to an end of the first interval of time. The method further includes measuring at a third time instant another sample of the power of the PV array with the adjusted voltage, and determining a power difference between the power of the PV array with the adjusted voltage at the third time instant and a computed power level of the PV array at the third time instant determined from the non-linear predictive model. 1. A method for power tracking , the method comprising:measuring a plurality of samples of power produced by a photovoltaic (PV) array over a first interval of time;determining, based on the measured plurality of samples of the power of the PV array, a non-linear predictive model of a behavior of the power produced by the PV array;performing a first adjustment of the PV array's voltage at a second time instant subsequent to an end of the first interval of time;measuring at a third time instant another sample of the power of the PV array with the adjusted voltage; anddetermining a power difference between the power of the PV array with the adjusted voltage at the third time instant and a computed power level of the PV array at the third time instant determined from the non-linear predictive model.2. The method of claim 1 , further comprising:performing another adjustment of the voltage of the PV array based on the determined power difference between the power of the PV array with the adjusted voltage at the third time instant and the computed power level of the PV array at the third time instant determined from the non-linear ...

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Номер записи: 50
15-01-2015 дата публикации

SYSTEM AND METHOD FOR CONTROLLING A SOLAR PANEL OUTPUT

Номер: US20150013749A1
Автор: Jain Babu
Принадлежит:

A control system includes a control module and one or more input sources. The control module is coupled to an output of the solar module in order to operate the solar panel so that an output of the solar panel is at a maximum power level. The control module is able to selectively decrease a current level of the solar panel's output in response to a condition that is indicative of a temperature of the solar panel while maintaining the power output of the solar panel at or within a designated percentage of the maximum level. The input source is coupled to the control module to provide an input that is indicative of the temperature. 1. A method for controlling an output of a solar panel , the method comprising:determining a temperature input for the solar panel; andwhen the temperature input is above a threshold, selectively reducing a current output of the solar panel while maintaining a power level of the output of the solar panel above a designated threshold.2. The method of claim 1 , wherein selectively reducing the current output of the solar panel includes:when the temperature input of the solar panel is above the threshold, determining whether the power level of the output of the solar panel is within a designated range of a maximum power level, and reducing the current output of the solar panel when the power level of the output of the solar panel is within the designated range.3. The method of claim 2 , wherein determining whether the power level of the output of the solar panel is within the designated range of the maximum power level includes determining a maximum power point of the output of the solar panel.4. The method of claim 1 , wherein determining the temperature input includes determining an input from a temperature sensor that is coupled to the solar panel.5. The method of claim 1 , wherein determining the temperature input includes determining a time of day from a clock input.6. The method of claim 1 , wherein determining the temperature input ...

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Номер записи: 51
15-01-2015 дата публикации

Suitable Control Method for A System of Photovoltaic Concentration Modules

Номер: US20150013751A1
Автор: Guerrero Cano Manuel, Noriega Gil Pablo, Ortega Linares Manuel Gil, Rodríguez Rubio Francisco
Принадлежит: ABENGOA SOLAR NEW TECHNOLOGIES S.A.

The invention relates to a suitable control method for a system of photovoltaic concentration modules, which can be used to maintain the correct orientation of the modules in order to track the sun without requiring the use of positioning sensors. The sun is tracked by performing angular movements in relation to each of the degrees of freedom at given intervals, measuring the power or current supplied by the energy collection module(s). The estimation of the sun's position and the strategy for subsequent movements are determined as a function of the reading. 2. The method of wherein before setting the value of yin step e) claim 1 , a check is made as to whether there are disturbances that interfere with the reading of P(x) in which case β=k αwherein k takes values between 0 and 0.5 claim 1 , preferably 0.5.3. the method of wherein after evaluating the maximum Pin step e) claim 1 , a coefficient cis evaluated being between 0 and 1 claim 1 , preferably 0.95 claim 1 , and a threshold value U=cPsuch that if P(x) is greater than U and P(x) is smaller than U claim 1 , then the point xis calculated such that P(x)=U claim 1 , and then y=x−β is established wherein β<α.4. The method of wherein after evaluating the maximum Pin step e) claim 1 , a coefficient Cis evaluated being between 0 and 1 claim 1 , preferably 0.95 claim 1 , and a threshold value U=cPsuch that if P(x) is smaller than U and P(x) is greater than U claim 1 , the point xis calculated such that P(x)=U claim 1 , and then y=xβ is established wherein β<α.5. The method of wherein the estimation of the Sun's position is altered by a comprehensive control correction.6. The method of wherein a correction factor e=(e claim 1 , e claim 1 , . . . ) is defined claim 1 , such that the estimation of the Sun's position x=(y claim 1 , y claim 1 , . . . ) used in step a) is a correction of the position taken based on the reference function Psuch that x=x+e.7. The method of wherein after the step determining y claim 6 , said ...

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Номер записи: 52
14-01-2021 дата публикации

METHOD AND SYSTEM FOR CONTROLLING CLUSTER OF SOLAR TRACKERS

Номер: US20210011496A1
Автор: LEE Jae Jin
Принадлежит:

Disclosed is a method of controlling a cluster of solar trackers in which a plurality of solar trackers exist as a cluster shape. The method includes detecting, by each of the cluster of solar trackers, one or more of power generation amount information, altitude information, and azimuth information thereof and transmitting the detected power generation amount information, altitude information, or azimuth information to a server, calculating, by the server, average power generation amount information, average altitude information, or average azimuth information using the power generation amount information, altitude information, or azimuth information of each of the cluster of solar trackers, and determining whether the cluster of solar trackers is normal by comparing the calculated average power generation amount information, average altitude information, or average azimuth information with the power generation amount information, altitude information, or azimuth information detected by each of the cluster of solar trackers. 1. A method of controlling a cluster of solar trackers in which a plurality of solar trackers exist as a cluster shape , the method comprising:detecting, by each of the cluster of solar trackers, one or more of power generation amount information, altitude information, and azimuth information thereof and transmitting the detected power generation amount information, altitude information, or azimuth information to a server;calculating, by the server, average power generation amount information, average altitude information, or average azimuth information using the power generation amount information, altitude information, or azimuth information of each of the cluster of solar trackers; anddetermining whether the cluster of solar trackers is normal by comparing the calculated average power generation amount information, average altitude information, or average azimuth information with the power generation amount information, altitude information, ...

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Номер записи: 53
12-01-2017 дата публикации

System and method for synchronized rapid shutdown of electrical devices

Номер: US20170012431A1
Автор: Andrew Benton, Jon Costanza
Принадлежит: Solaroff Systems LLC

In one embodiment, the invention can be a system for simultaneously shutting down electrical device, the system including a plurality of circuits, each circuit including an electrical device, and a control circuit configured to turn the electrical device on and off, each control circuit comprising an isolation transformer; an electrical source providing a control current; a switching device configured to switch on and off; and conductors configured to connect the isolation transformers of the plurality of circuits, the electrical source, and the switching device in series to form a current loop, the current loop transmitting the control current; wherein when the switching device is switched from on to off, the isolation transformers of the plurality of circuits stop receiving the control current, thereby causing the electrical devices of the plurality of circuits to shut off simultaneously.

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Номер записи: 54
12-01-2017 дата публикации

ENHANCED SOLAR PANELS, LIQUID DELIVERY SYSTEMS AND ASSOCIATED PROCESSES FOR SOLAR ENERGY SYSTEMS

Номер: US20170012575A1
Автор: II Argil E., Newdoll Ronald M., Shaver
Принадлежит:

Fluid delivery systems and related structures and processes are provided, such as for use with water, treated water, and/or a cleaning solution, for any of cleaning, cooling or any combination thereof, for one or more solar panels in a power generation environment. Enhanced coatings are provided for the incident surface of solar panels, such as to avoid build up of dirt, scale, or other contaminants, and/or to improve cleaning performance. Reclamation, filtration, and reuse structures are preferably provided for the delivered fluid, and seal structures may preferably be implemented between adjoining panels, to minimize loss of the delivered water or cleaning solution. 1. A power generation system , comprising:a server; a plurality of DC power cells, and', 'a control module comprising input connections connected to the plurality of DC power cells, output connections, a signal processing circuit connected to the input connections and to the output connections, and a controller connected to the signal processing circuit, wherein the control module is configured to track one or more operating parameters for the corresponding power panel, and to send a data signal to the server, wherein the data signal corresponds to the tracked parameters;, 'a plurality of power panels, each comprising'}at least one inverter having input DC terminals, output AC terminals, and an inverter circuit connected to the input DC terminals and output AC terminals; anda delivery mechanism for distributing a liquid over the outer surface of at least a portion of the solar panels; and the monitored efficiency is less than or equal to an efficiency setpoint, or', 'the monitored temperature exceeds a temperature setpoint; and, 'wherein the server is configured to monitor any of efficiency or temperature of one or more of the power panels based upon the received data signals, and to send a control signal to the delivery mechanism when any of'}wherein the delivery mechanism is controllably activatible ...

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Номер записи: 55
12-01-2017 дата публикации

ENHANCED SOLAR PANELS, LIQUID DELIVERY SYSTEMS AND ASSOCIATED PROCESSES FOR SOLAR ENERGY SYSTEMS

Номер: US20170012579A1
Автор: II Argil E., Newdoll Ronald M., Shaver
Принадлежит:

Fluid delivery systems and related structures and processes are provided, such as for use with water, treated water, and/or a cleaning solution, for any of cleaning, cooling or any combination thereof, for one or more solar panels in a power generation environment. Enhanced coatings are provided for the incident surface of solar panels, such as to avoid build up of dirt, scale, or other contaminants, and/or to improve cleaning performance. Reclamation, filtration, and reuse structures are preferably provided for the delivered fluid, and seal structures may preferably be implemented between adjoining panels, to minimize loss of the delivered water or cleaning solution. 1. A liquid distribution system for a power generation system comprising a plurality of solar panels , comprising:a server;a delivery mechanism for distributing a liquid over the outer surface of at least a portion of the solar panels;a liquid delivery controller associated with the delivery mechanism; anda plurality of panel controllers, wherein each of the panel controllers is associated with a corresponding solar panel and is configured to track one or more operating parameters for the corresponding solar panel, and to send a data signal to the server, wherein the data signal corresponds to the tracked parameters; the monitored efficiency is less than or equal to an efficiency setpoint, or', 'the monitored temperature exceeds a temperature setpoint; and, 'wherein the server is configured to monitor any of efficiency or temperature of one or more of the solar panels based upon the received data signals, and to send a control signal to the liquid delivery controller when any of'}wherein the liquid delivery controller is configured to activate the delivery mechanism in response to the control signal.2. The liquid distribution system of claim 1 , wherein the delivery mechanism is activated for any of cleaning or cooling of the solar panels.3. The liquid distribution system of claim 1 , wherein the ...

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Номер записи: 56
12-01-2017 дата публикации

Photovoltaic Power Generator Output Estimation Method and Device, and Power System Monitoring Device Using Same

Номер: US20170012580A1
Автор: EGASHIRA Ryo, KUMAGAI Masatoshi, Matsuda Katsuhiro, Matsumoto Takuya, MURAKOSHI Jun, OONISHI Tsukasa, Sato Tomoya, Watanabe Masahiro, YAMANE Kenichiro
Принадлежит:

The output of a photovoltaic power generator is estimated by estimating a solar radiation amount at a point different from solar radiation measurement points and determining an estimation error amount from solar radiation values measured at limited points. A photovoltaic power generator output estimation method estimates an output of a photovoltaic power generator based on a measured solar radiation value. The method includes a first estimation method of estimating a solar radiation amount at a photovoltaic power generator installation point from solar radiation meter installation point information, a value measured by a solar radiation meter, and photovoltaic power generator installation point information; a second estimation method of estimating the solar radiation amount at the photovoltaic power generator installation point in a manner different from that of the first estimation method; an output estimation method of estimating the output of the photovoltaic power generator from an estimated solar radiation amount and a rated capacity of the photovoltaic power generator; and an error estimation method of determining an estimation error of a photovoltaic power generator output from a difference between the first and second estimation methods. 18-. (canceled)9. A photovoltaic power generation output estimation method that estimates an output of a photovoltaic power generator based on a measured solar radiation value , the photovoltaic power generator output estimation method comprising:a first estimation method of estimating a solar radiation amount at a photovoltaic power generator installation point from solar radiation meter installation point information, a value measured by a solar radiation meter, and photovoltaic power generator installation point information;a second estimation method of estimating the solar radiation amount at the photovoltaic power generator installation point in a manner different from that of the first estimation method;an output ...

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Номер записи: 57
12-01-2017 дата публикации

Solar panel personality engine

Номер: US20170012581A1
Автор: Christopher A. Estes
Принадлежит: Solpad Inc, Sunculture Solar Inc

A solar panel is disclosed that detects conditions triggered by operational events and then selects behavioral actions for the solar panel to execute in response to the operational events. Condition detection devices detect conditions that the solar panel is exposed to where each condition is triggered by an operational event that the solar panel is encountering. The condition detection devices generate condition data that provides information as to each of the conditions that the solar panel is exposed to and each operational event that triggered each of the conditions that the solar panel is encountering. A personality engine analyzes the condition data provided by the condition detection devices to determine a behavioral action that the solar panel is to execute in response to each operational event that the solar panel is encountering and executes the determined behavioral action to respond to each operational event that the solar panel is encountering.

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Номер записи: 58
11-01-2018 дата публикации

ENERGY PANEL ARRANGEMENT SHUTDOWN

Номер: US20180013292A1
Автор: Khare Saghar Arun, Ozga Sahah Jean, White Paul Michael
Принадлежит:

One or more techniques and/or systems are provided for facilitating a shutdown of output power from an energy panel arrangement to an inverter. A shutdown implementation module is coupled between an energy panel arrangement and an inverter that converts DC power from the energy panel arrangement to AC power for an AC power grid. A communication connection is established, over a power-line communication line, between the shutdown implementation module and a shutdown controller associated with the inverter. Responsive to identifying a loss of the communication connection or receiving a shutdown instruction over the power-line communication line, the shutdown implementation module shuts down output power from the energy panel arrangement to the inverter. The shutdown implementation module may be located within a threshold distance from the energy panel arrangement (e.g., within about 10 feet) so that the output power may be shutoff within a threshold timespan (e.g., within about 10 seconds). 1. A system for facilitating a shutdown of output power from an energy panel arrangement to an inverter , comprising: establish a communication connection, over a power-line communication line between the energy panel arrangement and the inverter, with a shutdown controller associated with the inverter; and', 'responsive to identifying a loss of the communication connection, initiate a shutdown of output power from the energy panel arrangement to the inverter., 'a shutdown implementation module coupled between an energy panel arrangement and an inverter that is configured to convert DC power from the energy panel arrangement to AC power for an AC power grid, the shutdown implementation module configured to2. The system of claim 1 , the power-line communication line comprising a DC power line over which DC power is supplied from the energy panel arrangement to the inverter.3. The system of claim 1 , the shutdown implementation module configured to:responsive to receiving a shutdown ...

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Номер записи: 59
10-01-2019 дата публикации

METHOD AND SYSTEM FOR APPLYING ELECTRIC FIELDS TO MULTIPLE SOLAR PANELS

Номер: US20190013677A1
Автор: McNamara Robert P., Raymond Douglas M.
Принадлежит:

A solar cell management system for increasing the efficiency and power output of a solar cell and methods for making and using the same. The management system provides an electric field across one or more solar cells. The imposed electric field exerts a force on both the electrons and holes created by light incident on the solar cell and accelerates the electron-hole pairs towards the electrodes of the solar cell. The solar cell management system considers variations in configuration of solar cells to maximize the power output of the solar cells. The accelerated electron-hole pairs have a lower likelihood of recombining within the cells' semiconductor's material. This reduction in the electron-hole recombination rate results in an overall increase in the solar cells' efficiency and greater power output. 1. A system for managing more than one photovoltaic device , comprising:a voltage source being coupled to a selected photovoltaic device among the more than one photovoltaic device and applying a voltage signal to the selected photovoltaic device, the voltage signal having a first state being superimposed on top of an existing voltage generated by the selected photovoltaic device and comprising a series of voltage pulses with a positive magnitude for generating an external electric field across the selected photovoltaic device and a second state representing an off cycle between adjacent first states,wherein the first state is superimposed on top of the existing voltage by creating a negative reference for the first state.2. The system of claim 1 , wherein said voltage source concurrently applies the voltage signal to the selected photovoltaic device and a second selected photovoltaic device.3. The system of claim 2 , wherein said voltage source comprises:a first voltage pulser circuit being coupled with the selected photovoltaic device for providing a first time-varying voltage pulse across the selected photovoltaic device, the first time-varying voltage pulse ...

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Номер записи: 60
10-01-2019 дата публикации

METHOD AND SYSTEM FOR APPLYING ELECTRIC FIELDS TO MULTIPLE SOLAR PANELS

Номер: US20190013678A1
Автор: McNamara Robert P., Raymond Douglas M.
Принадлежит:

A solar cell management system for increasing the efficiency and power output of a solar cell and methods for making and using the same. The management system provides an electric field across one or more solar cells. The imposed electric field exerts a force on both the electrons and holes created by light incident on the solar cell and accelerates the electron-hole pairs towards the electrodes of the solar cell. The solar cell management system considers variations in configuration of solar cells to maximize the power output of the solar cells. The accelerated electron-hole pairs have a lower likelihood of recombining within the cells' semiconductor's material. This reduction in the electron-hole recombination rate results in an overall increase in the solar cells' efficiency and greater power output. 1. A method for increasing an output power of one or more photovoltaic devices , comprising:generating a first series of voltage pulses with a positive magnitude for a first predetermined time interval;superimposing the first series of voltage pulses onto an output voltage of a first photovoltaic device, the voltage pulses for generating an electric field across the first photovoltaic device to increase an output power of the first photovoltaic device; andterminating said generating the first series of voltage pulses at expiry of the first predetermined time interval.2. The method of claim 1 , wherein said superimposing comprises superimposing the first series of voltage pulses onto the output voltage of the first photovoltaic device via a negative reference voltage.3. The method of claim 2 , further comprising generating the negative reference voltage having a predetermined amplitude claim 2 , an absolute value of the predetermined amplitude being equal to a positive amplitude of the output voltage of the first photovoltaic dev4. The method of claim 1 , wherein said generating the first series of voltage pulses includes adjusting the voltage pulses for controlling ...

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Номер записи: 61
10-01-2019 дата публикации

INTEGRATED RENEWABLE ENERGY HARVESTING SYSTEM

Номер: US20190013765A1
Автор: AL DUGHAISH Fahad
Принадлежит:

A solar and wind energy harvesting system having a support structure with a pair of poles and a plurality of transversal members that extends between the pair of poles, a plurality of transducers affixed to a corresponding transversal member of the plurality of transversal members, a plurality of photovoltaic cells, wherein each photovoltaic cell is suspended from a corresponding transducer of the plurality of transducers and receives sunlight to provide sunlight input electricity and wind to bend the corresponding transducer and have the corresponding transducer provide wind input electricity, and a battery assembly that is electrically connected to the plurality of transducers and the plurality of photovoltaic cells to receive, regulate and store the solar input electricity and the wind input electricity. 1. A solar and wind energy harvesting system comprising: a pair of poles, and', 'a plurality of transversal members that extends between the pair of poles;', 'a plurality of transducers affixed to each transversal member of the plurality of transversal members;, 'a support structure having 'is suspended from a corresponding transducer of the plurality of transducers, receives sunlight to provide sunlight input electricity, and receives wind to bend the corresponding transducer which generates wind input electricity;', 'a plurality of photovoltaic cells, wherein each photovoltaic cell'} a charge regulator to receive the sunlight input electricity and the wind input electricity and provide a regulated input electricity,', 'a battery to receive the regulated input electricity,', 'a solar input voltmeter positioned between the plurality of photovoltaic cells and the charge regulator to provide solar voltage readings commensurate with solar voltage values of the solar input electricity, and', 'a wind output voltage adjuster positioned between the battery and the plurality of transducers to provide a wind output electricity to the plurality of transducers; and, 'a ...

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Номер записи: 62
10-01-2019 дата публикации

Testing of a Photovoltaic Panel

Номер: US20190013777A9
Автор: Adest Meir, Binder Yaron, Fishelov Amir, Galin Yoav, Gazit Meir, Glovinsky Tzachi, Handelsman Lior, Sella Guy
Принадлежит:

A method for testing a photovoltaic panel connected to an electronic module. The electronic module includes an input attached to the photovoltaic panel and a power output. The method activates a bypass to the electronic module. The bypass provides a low impedance path between the input and the output of the electronic module. A current is injected into the electronic module thereby compensating for the presence of the electronic module during the testing. The current may be previously determined by measuring a circuit parameter of the electronic module. The circuit parameter may be impedance, inductance, resistance or capacitance. 1. A method for testing a photovoltaic panel connected to an electronic module , said electronic module including an input attached to said photovoltaic panel and a power output , the method comprising the step of:activating a bypass to the electronic module, wherein said bypass provides a low impedance path between the input and the output of the electronic module;injecting a current into the electronic module thereby compensating for the presence of the electronic module during the testing.2. The method of claim 1 , wherein said current is previously determined by measuring a circuit parameter of said electronic module.3. The method of wherein said circuit parameter is selected from the group consisting of: impedance claim 2 , inductance claim 2 , resistance claim 2 , capacitance.4. The method according to claim 1 , further comprising the step of:permanently attaching the electronic module to the photovoltaic panel.5. The method according to claim 1 , wherein said activating includes externally applying selectably either an electromagnetic field or a magnetic field.6. The method according to claim 1 , wherein the electronic module performs selectably either: DC to DC conversion claim 1 , DC to AC conversion or maximum power point tracking.7. The method according to claim 1 , wherein said bypass includes selectably either a reed switch ...

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Номер записи: 63
14-01-2021 дата публикации

Solar panel array performance testing system with defined time and location illumination

Номер: US20210013832A1
Автор: Hector K. Lopez, Jay K. Limbasiya, Michael T. Rothenberg
Принадлежит: Inventus Holdings LLC

One example includes a test illumination system comprising a light source and a location controller configured to generate location data associated with a real-time location of the test illumination system. The test illumination system can be configured to move relative to a solar panel array in response to a solar testing protocol to provide illumination from the light source at a defined illumination time to each solar panel of the solar panel array in a sequence to provide a voltage amplitude. The system also includes a solar panel testing controller configured to correlate the location data of the test illumination system, the defined illumination time, and the voltage amplitude for each solar panel of the solar panel array in the sequence to determine an efficacy of each solar panel of the solar panel array.

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Номер записи: 64
14-01-2021 дата публикации

Position tracking device and method for providing low power geofence service

Номер: US20210014645A1
Автор: Hoeyoung HWANG, Hyungil Baek, Kyunghyun RYU, Semin Oh
Принадлежит: Amotech Co Ltd

A method capable of providing a low power geofence service according to the present invention comprises the steps of: detecting a reference Vrect value for estimating an indoor/outdoor position from a solar charger of a position tracker; determining whether the solar charging module (solar charger) of the position tracker is in a charging or non-charging situation, on the basis of the detected Vrect value; if it is determined that the solar charging module of the position tracker is in the charging situation, determining that the position of the position tracker is outdoors and acquiring position tracking data by using a global positioning system (GPS) module; if it is determined that the solar charger of the position tracker is in the non-charging situation, determining that the position of the position tracker is indoors or in a shaded area, and acquiring position tracking data by using one among Bluetooth low energy (BLEs), wireless fidelity (Wi-Fi), and ultra-wide band (UWB) modules other than the GPS module; and transmitting the acquired position tracking data to a server by using a low power communication scheme.

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Номер записи: 65
21-01-2016 дата публикации

DISCHARGE RATIO STRING CONTINUITY MONITORING

Номер: US20160018456A1
Автор: Yilmaz Kadir
Принадлежит: SOLANTRO SEMICONDUCTOR CORP.

A method for determining continuity in a PV panel string by calculating a discharge ratio includes operatively coupling a PV panel to a PV panel string; measuring a first voltage between points of coupling of the PV panel to the PV panel string; disconnecting the PV panel from the PV panel string; waiting for a discharge period to expire; measuring a second voltage at an expiration of the discharge period; calculating a discharge ratio of the second voltage to the first voltage; and comparing the discharge ratio to a predetermined threshold ratio. An apparatus for determining continuity in a PV panel string includes a discharge resistance serially connected in the PV panel string; a capacitance parallel connected to the discharge resistance; a voltage sensor parallel connected to the discharge resistance; and a first switch parallel connected to the discharge resistance. 1. A method for determining continuity in a photovoltaic (PV) panel string by calculating a discharge ratio , said method comprising:operatively coupling a PV panel to a PV panel string;measuring a first voltage between points of coupling of said PV panel to said PV panel string;disconnecting said PV panel from said PV panel string;waiting for a discharge period to expire;measuring a second voltage at an expiration of said discharge period;calculating a discharge ratio of said second voltage to said first voltage; andcomparing said discharge ratio to a predetermined threshold ratio.2. The method of claim 1 , wherein said operatively coupling said PV panel to said PV panel string comprises coupling a panel interface device (PID) that is operatively connected to said PV panel to said PV panel string claim 1 , wherein said PID permits disconnection of said PV panel from said PV panel string claim 1 , and wherein said PID permits reconnection of said PV panel to said PV panel string.3. The method of claim 2 , wherein said PID comprises a discharge resistance connected between points of coupling of said ...

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Номер записи: 66
21-01-2016 дата публикации

BIFACIAL PHOTOVOLTAIC DEVICES

Номер: US20160020347A1
Автор: WOBER Munib, Yu Young-June
Принадлежит:

Described herein is a photovoltaic device operable to convert light to electricity, comprising a substrate, a first plurality of structures essentially perpendicular to the substrate and disposed on a first face of the substrate, and a second plurality of structures essentially perpendicular to the substrate and disposed on a second face of the substrate, wherein both the first plurality and the second plurality of structures are configured to convert light to electricity.

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Номер записи: 67
21-01-2016 дата публикации

PHOTOVOLTAIC VOLTAGE REGULATION

Номер: US20160020611A1
Автор: GARABANDIC Djordje
Принадлежит:

A photovoltaic system includes: a photovoltaic generator comprising strings that each includes one or more photovoltaic cells; a power converter; switches; and a controller. The power converter is configured to convert direct current (DC) power provided by the photovoltaic generator into alternating current (AC) power, and to output the AC power. Each switch is associated with one of the strings and is configured to connect the associated string to the power converter when set to a first setting, such that power generated by the first string can flow to the power converter. Each switch is also configured to disconnect the string from the power converter when set to a second setting. The controller is configured to control the power provided by the photovoltaic generator by selectively connecting the strings of the photovoltaic generator to the power converter by controlling the settings of the switches. 1. A method for controlling a power output of a photovoltaic system , the photovoltaic system including a photovoltaic generator that comprises a plurality of strings , each string comprising one or more photovoltaic cells , the method comprising:receiving an inverter startup signal indicating that a power converter of the photovoltaic system is in a startup period during which power provided by the photovoltaic generator is to be gradually ramped up;disconnecting any strings in excess of a one or more of the plurality of strings used to provide startup voltage; anditeratively connecting one or more of the plurality of strings to gradually increase power provided by the photovoltaic generator.2. The method of claim 1 , wherein each of the plurality of strings is associated with a switch claim 1 , and wherein disconnecting any of the plurality of strings in excess of the one or more of the plurality of strings used to provide the startup voltage comprises sending a first control signal to the switch associated with each of the strings to be disconnected to disconnect ...

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Номер записи: 68
21-01-2016 дата публикации

Distributed energy storage and power quality control in photovoltaic arrays

Номер: US20160020728A1
Автор: James Wolter
Принадлежит: Individual

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

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Номер записи: 69
21-01-2016 дата публикации

METHOD, DEVICE, AND SYSTEM FOR DETECTING DIRECT-CURRENT ARC FAULT OF PHOTOVOLTAIC SYSTEM

Номер: US20160020729A1
Автор: Ni Hua, YU Yanfei, Zhao Wei, ZHOU Yanfeng
Принадлежит: SUNGROW POWER SUPPLY CO., LTD.

A method for detecting a direct-current arc fault of a photovoltaic system is provided. The method includes: obtaining operation parameters of a photovoltaic system, and a current noise signal in a direct-current cable of the photovoltaic system, respectively; adjusting, based on the operation parameters, a threshold, where the threshold is used to determine whether the current noise signal has an arc feature; and sending a photovoltaic system direct-current arc fault signal in a case that it is determined, based on the threshold, that the current noise signal has a arc feature, so as to improve precision in the direct-current arc fault detection of the photovoltaic system. A device, a processor, and a system for detecting a direct-current arc fault of a photovoltaic system are also provided.

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Номер записи: 70
19-01-2017 дата публикации

POWER SYSTEM MANAGEMENT DEVICE AND PROGRAM

Номер: US20170018930A1
Автор: HAMA Yoshihito, KAWANO Junichi
Принадлежит: Omron Corporation

A power system management device manages the operational states of a plurality of power systems each including a power generator and a power conditioner connected to each other, and can promptly inform a user of erroneous setting of configuration information. The management device stores configuration information in correspondence with each power system including a power generator (photovoltaic array) and a power conditioner connected to each other. The configuration information indicates the configuration of each power system and includes one or more configuration information elements set by a user. The management device determines whether the configuration information includes at least one configuration information element that has been possibly set erroneously using information obtained from the power conditioner of each power system, and outputs a message prompting verification and correction of configuration information determined to include at least one configuration information element that has been possibly set erroneously. 1. A power system management device for managing operational states of a plurality of power systems each including a power generator and a power conditioner connected to each other , the management device comprising:a configuration information storage unit configured to store a plurality of pieces of configuration information in correspondence with the plurality of power systems, each piece of configuration information indicating a configuration of a corresponding power system and including one or more configuration information elements set by a user;a determination unit configured to determine whether each piece of configuration information stored in the configuration information storage unit includes at least one configuration information element that has been possibly set erroneously, using information obtained from the power conditioner of the corresponding power system; andan output unit configured to output information for prompting ...

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Номер записи: 71
19-01-2017 дата публикации

Solar Panel Location Detection System and Method

Номер: US20170019063A1
Автор: Ibarra Eric Joseph, Zoller Jeremy Jacob
Принадлежит: Synapse Wireless, Inc.

A system for automatically commissioning a solar panel array comprises a plurality of panel monitoring devices, each panel monitoring device connected between a positive and negative terminal of a solar panel. Each panel monitoring device comprises a switching device, the switching device configurable to disconnect an output from the solar panel. The system further comprises logic configured to automatically obtain a relative position of each panel monitoring device in the system by appointing serially a series of masters from among the panel monitoring devices, each master in turn broadcasting a unique identifier and enabling its output. Each panel monitoring device listens to the masters' broadcasts and stores in memory the unique identifier and information indicating whether the panel monitoring device detected the masters' voltage. The panel monitoring devices determine their respective locations by analyzing the information broadcast by, and the voltage detected from, the masters. 1. A system for commissioning a solar panel array , the system comprising:a plurality of panel monitoring devices, each panel monitoring device connected between a positive and negative terminal of a solar panel, each panel monitoring device comprising a switching device, the switching device configurable to disconnect an output from the solar panel and reconnect the output to the solar panel;logic configured to automatically obtain a relative position of each panel monitoring device in the system by appointing serially a series of masters from among the panel monitoring devices, each master in turn broadcasting a unique identifier and enabling its output, each panel monitoring device listening to the masters' broadcasts and storing in memory the unique identifier and information indicating whether the panel monitoring device detected the masters' voltage.2. The system of claim 1 , wherein the unique identifier comprises a combiner box identifier.3. The system of claim 1 , wherein the ...

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Номер записи: 72
17-01-2019 дата публикации

Conditional Retrieval

Номер: US20190018991A1
Автор: Brian Otis, Daniel James Yeager, William Biederman
Принадлежит: Verily Life Sciences LLC

In one aspect of the present disclosure, a method is disclosed. The method involves: a reader detecting an eye-mountable device within a wireless communication range of the reader, wherein the eye-mountable device includes a transparent material having a concave mounting surface configured to be removably mounted on a corneal surface; wirelessly retrieving from the detected eye-mountable device a first set of data; using the retrieved first set of data to determine that a condition has been satisfied; and responsive to using the retrieved first set of data to determine that the condition has been satisfied, retrieving from the detected eye-mountable device a second set of data.

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Номер записи: 73
03-02-2022 дата публикации

Pairing of Components in a Direct Current Distributed Power Generation System

Номер: US20220038050A1
Автор: Adest Meir, Binder Yaron, Fishelov Amir, Galin Yoav, Gazit Meir, Handelsman Lior, Sella Guy, Yoscovich Ilan
Принадлежит:

A method of signaling between a photovoltaic module and an inverter module. The inverter module is connected to the photovoltaic module. In an initial mode of operation an initial code is modulated thereby producing an initial signal. The initial signal is transmitted from the inverter module to the photovoltaic module. The initial signal is received by the photovoltaic module. The operating mode is then changed to a normal mode of power conversion, and during the normal mode of operation a control signal is transmitted from the inverter to the photovoltaic module. A control code is demodulated and received from the control signal. The control code is compared with the initial code producing a comparison. The control command of the control signal is validated as a valid control command from the inverter module with the control command only acted upon when the comparison is a positive comparison. 116-. (canceled)17. A method comprising:configuring a photovoltaic control circuit for controlling an output from a DC power source to limit current from the output; receiving control data from the central control circuit; and', 'validating that the control data comes from the central control circuit; and, 'configuring a central control circuit for pairing with the photovoltaic control circuit, wherein the configuring comprisesconfiguring the photovoltaic control circuit to, in response to the validating the control data, provide the current on the output.18. The method of claim 17 , wherein the receiving the control data comprises receiving configuration data including initialization data.19. The method of claim 18 , wherein the validating the control data comprises establishing electrical connections and future communication protocols.20. The method of claim 17 , wherein the controlling the output from the DC power source comprises claim 17 , in response to a failed validation of the control data claim 17 , limiting the current from the output.21. The method of claim 17 , ...

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Номер записи: 74
03-02-2022 дата публикации

Method For Controlling Operation Of MLPE Device, Method For Controlling MLPE Devices, and Photovoltaic System

Номер: US20220038052A1
Автор: Jiang Anying, LI Xiaoxun, Yang Yu, YU Yanfei
Принадлежит: SUNGROW POWER SUPPLY CO., LTD.

Provided are a method for controlling operation of a module level power electronics (MLPE) device, a method for controlling MLPE devices and a photovoltaic system. In the method for controlling operation of a MLPE device, if it is determined that a current of a photovoltaic string where the MLPE device is located is less than a current threshold and coding information sent by a converter in the photovoltaic system is not received for a first preset time period, an output voltage or an output power of the MLPE device is controlled to be less than a corresponding threshold. 1. A method for controlling operation of a module level power electronics (MLPE) device , the method applied to the MLPE device , the MLPE device comprising a switching device connected in series with a photovoltaic module corresponding to the MLPE device , and the method comprising:detecting a current of a photovoltaic string where the MLPE device is located;determining whether the current of the photovoltaic string is less than a current threshold and coding information sent by a converter in a photovoltaic system is not received for a first preset time period; andcontrolling, if it is determined that the current of the photovoltaic string is less than the current threshold and the coding information sent by the converter is not received for the first preset time period, an output voltage or an output power of the MLPE device to be less than a corresponding threshold.2. The method for controlling operation of the MLPE device according to claim 1 , wherein the controlling an output voltage or an output power of the MLPE device to be less than a corresponding threshold comprises:controlling the switching device to switch with a fixed cycle and a fixed duty cycle, to reduce the output voltage and the output power of the MLPE device.3. The method for controlling operation of the MLPE device according to claim 1 , wherein the controlling an output voltage or an output power of the MLPE device to be ...

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Номер записи: 75
03-02-2022 дата публикации

METHOD FOR ESTIMATING OPERATION VOLTAGE OF SOLAR BATTERY CELL IN SOLAR BATTERY MODULE AND SOLAR BATTERY CELL OPERATION VOLTAGE ESTIMATION SYSTEM

Номер: US20220038053A1
Автор: KISU Shunsuke, Kobayashi Yasuyuki
Принадлежит: TEIKYO UNIVERSITY

A method for estimating an operation voltage of a cell includes setting a state in which one cell is shielded from light; detecting a small change of an output current of a module in that state; irradiating another cell with modulated and detecting the small change of the output current light in that state; detecting an operation voltage of the module in that state; generating a first calibration line by connecting a first point and a second point which are plotted on coordinate axes representing a voltage and a relative ratio of a resistor; irradiating a cell the operation voltage of which is to be estimated with the modulated light and detecting the small change of the output current of the module in a state in which none of the cells is shielded from light; detecting the operation voltage of the module in that state; generating a second calibration line by connecting a third point and the second point which are plotted on the coordinate axes; calculating a value of the relative ratio of the resistor of the cell the operation voltage of which is to be estimated; and calculating a value of a voltage of a fourth point, which becomes the value of the relative ratio of the resistor and is provided on the second calibration line, as the operation voltage of the cell to be estimated. 1. A method for estimating an operation voltage of each of m (m is an integer which is equal to or greater than 2) solar battery cells which constitute a solar battery module and are connected in series , the method comprising:a first step of setting a state in which a first solar battery cell, which is one solar battery cell among the m solar battery cells, is shielded from light;a second step of irradiating the first solar battery cell with modulated light and detecting a small change of an output current of the solar battery module in the state in which the first solar battery cell is shielded from light;a third step of irradiating each of the (m−1) solar battery cells excluding the ...

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Номер записи: 76
19-01-2017 дата публикации

SOLAR ROW ONSITE AUTOMATIC INSPECTION SYSTEM

Номер: US20170019570A1
Автор: MELLER Eran, MELLER Moshe
Принадлежит:

An inspection system for inspecting a solar row having a plurality of solar panels, the inspection system includes a moveable support construction, an imaging device and a controller, the imaging device being mounted on the moveable support construction, the controller being coupled with the moveable support construction and with the imaging device, the controller being configured to cause the moveable support construction to move the imaging device over the surface of the solar row and to cause the imaging device to image a selected target area of the solar row, the controller being further configured to analyze images acquired by the imaging device for detecting defects of the solar row. 1. An inspection system for inspecting a solar row having a plurality of solar panels and a pair of parallel rails , said solar row having a length and a width , said pair of parallel rails being coupled with said plurality of solar panels , the inspection system comprising:a moveable support frame being configured to selectively move over a surface of said solar row over said pair of parallel rails in a single axis parallel to said pair of parallel rails, said single axis being in said length of said solar row, said moveable support frame comprising a secondary frame being configured to selectively move over a width of said solar row, said width being a single axis perpendicular to said pair of parallel rails;at least two imaging devices mounted on said secondary frame, said at least two imaging devices being selectively operable to image a selected target area of said solar row; anda controller coupled with said moveable support frame and with said at least two imaging devices, said controller being configured to cause said moveable support frame and said secondary frame to move said at least two imaging devices simultaneously over said surface of said solar row and to cause said at least two imaging devices to image said selected target area of said solar row, said controller ...

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Номер записи: 77
18-01-2018 дата публикации

PHOTOVOLTAIC SYSTEM POWER OUTPUT CONTROL WITH RETAINED RESERVE POWER OUTPUT

Номер: US20180019594A1
Автор: MIN Qilong
Принадлежит: The Research Foundation for The State University of New York

A photovoltaic power station includes, for example, a plurality of solar panels at a first location, the plurality of solar panels operable to provide a maximum power output, a controller operable to supply, from the plurality of solar panels, a predetermined power output less than the maximum power output to an electrical grid, and wherein the photovoltaic power station is operable to maintain, from the plurality of solar panels, a reserve power output to provide the reserve power output to the electrical grid, the reserve power output being the difference between the maximum power output and the predetermined power output. 1. A photovoltaic power station comprising:a plurality of solar panels at a first location, said plurality of solar panels operable to provide a maximum power output;a controller operable to supply, from said plurality of solar panels, a predetermined power output less than the maximum power output to an electrical grid; andwherein said photovoltaic power station is operable to maintain, from the plurality of solar panels, a reserve power output to provide the reserve power output to the electrical grid, the reserve power output being the difference between the maximum power output and the predetermined power output.2. The photovoltaic power station of wherein said controller is operable to supply claim 1 , from said plurality of solar panels claim 1 , a power output comprising at least a portion of the reserve power output to the electrical grid.3. The photovoltaic power station of wherein said controller is operable to determine a future estimation of maximum power output from said plurality of solar panels disposed at the first location claim 1 , and forward the future estimation of maximum power output to an electrical utility disposed at a second location remote from the first location.4. The photovoltaic power station of wherein said controller is operable to receive claim 1 , at the first location claim 1 , a first request from the ...

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Номер записи: 78
18-01-2018 дата публикации

SYSTEM AND METHOD FOR ENHANCED WATCH DOG IN SOLAR PANEL INSTALLATIONS

Номер: US20180019705A1
Автор: Arditi Shmuel, Bickford James, Hadar Ron
Принадлежит:

A system and method for automated shutdown, disconnect, or power reduction of solar panels. A system of solar panels includes one or more master management units (MMUs) and one or more local management units (LMUs). The MMUs are in communication with the LMUs with the MMUs and LMUs “handshaking” when the system is in operation. The MMUs are connected to one or more controllers which in turn are connected to emergency detection sensors. Upon a sensor detection of an emergency, the associated MMU is notified which in turn instructs associated LMUs to take appropriate action. In the event that communication with the MMUs has been cut off, the LMUs take the initiative to shut down, disconnect, or reduce the output of associated string(s) of solar panels. 1. A photovoltaic panel , comprising:at least one photovoltaic cell; a voltage regulator coupled to the least one photovoltaic cell to receive electric power generated by the at least one photovoltaic cell; and', 'a controller coupled to the voltage regulator;, 'a local unit configured on the photovoltaic panel, the local unit havingwherein the voltage regulator provides a power output of the photovoltaic panel using the electric power generated by the at least one photovoltaic cell;wherein the controller communicates with a remote unit, disposed at a location remote from the local unit, to control operations of the voltage regulator;wherein a sensor is monitored for an anomaly; andwherein in response to a determination that the sensor has detected the anomaly, the controller causes the voltage regulator to shut down the power output of the photovoltaic panel based on a communication with the remote unit.2. The photovoltaic panel of claim 1 , wherein the remote unit and the sensor are connected in a network.3. The photovoltaic panel of claim 2 , wherein the remote unit monitors queries the sensor for the anomaly.4. The photovoltaic panel of claim 2 , wherein the remote unit receives claim 2 , from the sensor claim 2 , ...

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Номер записи: 79
21-01-2021 дата публикации

SYSTEM AND METHOD FOR PHOTOVOLTAIC SYSTEM CONFIGURATION SPECIFICATION INFERRENCE WITH THE AID OF A DIGITAL COMPUTER

Номер: US20210019458A1
Автор: Hoff Thomas E.
Принадлежит:

A photovoltaic system's configuration specification can be inferred by an evaluative process that searches through a space of candidate values for the variables in the specification. Each variable is selected in a specific ordering that narrows the field of candidate values. A constant horizon is assumed to account for diffuse irradiance insensitive to specific obstruction locations relative to the photovoltaic system's geographic location. Initial values for the azimuth angle, constant horizon obstruction elevation angle, and tilt angle are determined, followed by final values for these variables. The effects of direct obstructions that block direct irradiance in the areas where the actual horizon and the range of sun path values overlap relative to the geographic location are evaluated to find the exact obstruction elevation angle over a range of azimuth bins or directions. The photovoltaic temperature response coefficient and the inverter rating or power curve of the photovoltaic system are determined. 1. A system for photovoltaic system configuration specification inference with the aid of a digital computer , comprising the steps of: obtain measured photovoltaic production for a photovoltaic system operating at a known geographic location over a set time period;', 'obtain a preexisting configuration for the photovoltaic system;', determine the optimal values comprising initial optimal values for the variables comprising an azimuth angle, constant horizon obstruction elevation angle, and tilt angle based on the measured photovoltaic production;', 'determine the optimal values comprising final optimal values for the azimuth angle, constant horizon obstruction elevation angle, and tilt angle by using the initial optimal values for the azimuth angle, constant horizon obstruction elevation angle, and tilt angle;, 'search for optimal values for a plurality of variables in a configuration specification for the photovoltaic system, comprising, 'modify the preexisting ...

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Номер записи: 80
21-01-2021 дата публикации

USING ONE-STEP AHEAD PREDICTION TO DETERMINE BATTERY POWER SETPOINTS

Номер: US20210021135A1
Автор: ELBSAT MOHAMMAD N., Lenhardt Brett M., Wenzel Michael J.
Принадлежит:

A predictive power control system includes a battery configured to store and discharge electric power, a battery power inverter configured to control an amount of the electric power stored or discharged from the battery, and a controller. The controller is configured to predict a power output of a photovoltaic field and use the predicted power output of the photovoltaic field to determine a setpoint for the battery power inverter. 1. A predictive power control system comprising:a battery configured to store and discharge electric power;a battery power inverter configured to control an amount of the electric power stored or discharged from the battery;a controller configured to predict a power output of a photovoltaic field and use the predicted power output of the photovoltaic field to determine a setpoint for the battery power inverter.2. The system of claim 1 , wherein the controller is configured to determine the setpoint for the battery power inverter in order to comply with a ramp rate limit.3. The system of claim 1 , wherein the controller is configured to determine a current state-of-charge of the battery and use the current state-of-charge of the battery to determine the setpoint for the battery power inverter.4. The system of claim 1 , wherein the controller is configured to predict the power output of the photovoltaic field by:generating a state-space model that represents the power output of the photovoltaic field;identifying parameters of the state-space model using an autoregressive moving average technique based on a history of values of the power output of the photovoltaic field;using a Kalman filter in combination with the identified state-space model to predict the power output of the photovoltaic field at a next instant in time.5. The system of claim 1 , wherein the controller is configured to:use the predicted power output of the photovoltaic field to determine that a portion of the power output of the photovoltaic field must be stored or limited ...

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Номер записи: 81
21-01-2021 дата публикации

SOLAR POWER OPERATED ACTUATOR SYSTEM CONTROLLED BY A SOLAR CONTROLLER

Номер: US20210021232A1
Автор: AUTIO Petri, OJANEN Eero, OJANEN Yrjö
Принадлежит:

The embodiments of the disclosure concern solar power operation controller to control a solar operated actuator system. An embodied solar controller, of a solar power operated actuator system, includes, an input for power feed from a solar panel for the solar controller powering, at least one sensor input in an ensemble of sensor inputs for providing sensor data to the solar controller, a functional connection to control a solar panel produced electricity for an accumulator charging, a functional connection to control accumulator laden charge for an actuator operation. 1. Solar controller (SC) , of a solar power (Sun) operated actuator system (SOAS) , comprisingan input for power feed (Inp) from a solar panel (SoPa) for the solar controller (SC) powering,at least one sensor input in an ensemble of sensor inputs (sein) for providing sensor data to the solar controller (SC),a functional connection (FCC) to control a solar panel produced electricity for an accumulator charging,a functional connection (CHIF) to control accumulator-laden charge for an actuator operation.2. The solar controller of claim 1 , arranged to power up and/or power down at least one of said functional connections (FCC) claim 1 , (CHIF).3. The solar controller (SC) of wherein the power up and/or power down are/is based on accumulator charging state based threshold value.4. The solar controller of claim 1 , wherein the solar controller (SC) in the system is configured first to power up and/or last to power down in the system.5. The solar controller according to claim 1 , wherein the solar controller (SC) is powered up by a solar panel (SoPa) from a power down state.6. Solar operated actuator system (SOAS) comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a solar controller (SC) according to ,'}an actuator (Actu) to be operated by the accumulator (Accu) laden electricity in the control of the solar controller (SC)an accumulator (Accu) to store and discharge electricity for an actuator ( ...

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Номер записи: 82
21-01-2021 дата публикации

SYSTEM AND METHOD FOR DETERMINING SEASONAL ENERGY CONSUMPTION WITH THE AID OF A DIGITAL COMPUTER

Номер: US20210021233A1
Автор: Hoff Thomas E.
Принадлежит:

A system and method for determining seasonal energy consumption with the aid of a digital computer is provided. Through a power metering energy loads for a building situated in a known location are assessed as measured over a seasonal time period. Outdoor temperatures for the building are assessed as measured over the seasonal time period through a temperature monitoring infrastructure. A digital computer comprising a processor and a memory that is adapted to store program instructions for execution by the processor is operated, the program instructions capable of: expressing each energy load as a function of the outdoor temperature measured at the same time of the seasonal time period in point-intercept form; and taking a slope of the point-intercept form as the fuel rate of energy consumption during the seasonal time period. 1. A method for determining seasonal energy consumption with the aid of a digital computer , comprising the steps of:assessing through a power metering energy loads for a building situated in a known location as measured over a seasonal time period;assessing outdoor temperatures for the building as measured over the seasonal time period through a temperature monitoring infrastructure; and expressing each energy load as a function of the outdoor temperature measured at the same time of the seasonal time period in point-intercept form; and', 'taking a slope of the point-intercept form as the fuel rate of energy consumption during the seasonal time period., 'operating a digital computer comprising a processor and a memory that is adapted to store program instructions for execution by the processor, the program instructions capable of2. A method according to claim 1 , further comprising:finding the balance point temperature for the seasonal time period as the outdoor temperature above which the fuel rate of energy consumption deviates from the point-intercept form.3. A method according to claim 1 , further comprising:determining on-site power ...

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Номер записи: 83
21-01-2021 дата публикации

SYSTEM AND METHOD FOR TESTING PHOTOSENSITIVE DEVICE DEGRADATION

Номер: US20210021234A1
Автор: Irwin Michael D., Lovelace Jerome, Mielczarek Kamil
Принадлежит:

The performance of photosensitive devices over time may be tested by configuring a photosensitive device test system that includes a light source plate that exposes photosensitive devices within a container to a specified light intensity. The light intensity may be adjusted by a programmable power source according to one or more thresholds. A test may last for a set duration with performance measurements being taken at predetermined intervals throughout the duration. Feedback from the photosensitive device test system may be recorded to determine whether to increase light intensity, to stop testing, to continue testing, and whether one or more environmental conditions should be altered. Measurements may be sent to a client for analysis and display to a user. 1. A system comprising:a light source plate, wherein the light source plate emits light at an intensity level;a cell interface plate;a container proximate to the light source plate and coupled to the cell interface plate, wherein the container comprises a plurality of photosensitive devices, wherein a plurality of pins associated with a plurality of pixels of each of the plurality of photosensitive devices interfaces with the container, and wherein the container interfaces the plurality of pins to the cell interface plate;a light metering device proximate to the light source plate, wherein the light metering device measures the intensity of emissions from the light source plate to the photosensitive devices;a light power source coupled to the light source plate, wherein the light power source controls one or more of current and voltage to the light source plate;a multiplexor coupled to the cell interface plate, wherein the multiplexor activates circuitry to address the plurality of pixels;a measuring device coupled to the multiplexor, wherein the measuring device receives one or more performance measurements associated with the plurality of pixels; anda cell interface temperature control device coupled to the ...

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Номер записи: 84
10-02-2022 дата публикации

Atomic force microscopy apparatus, methods, and applications

Номер: US20220043024A1
Автор: John Marohn, Ryan Dwyer, Sarah NATHAN
Принадлежит: CORNELL UNIVERSITY

Atomic force microscopy apparatus and method that enable observing charge generation transients with nanometer spatial resolution and nanosecond to picosecond time resolution, the timescale relevant for studying photo-generated charges in the world's highest efficiency photovoltaic films. The AFM apparatus includes an AFM, a light source for illumination of a sample operatively coupled to the AFM, a voltage source operatively coupled to the AFM, and a control circuitry operatively coupled to the light source and the voltage source. The AFM apparatus improves the time resolution and enables rapid acquisition of photocapacitance transients in a wide array of solar-energy-harvesting materials.

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Номер записи: 85
24-04-2014 дата публикации

Photovoltaic Energy Generation Device with Individual Management of the Cells

Номер: US20140109950A1
Автор: Ghislain Despesse
Принадлежит: Commissariat a lEnergie Atomique et aux Energies Alternatives CEA

Photovoltaic energy generation device comprising several modules ( 12; 112 ) disposed in series, characterized in that it comprises at least one module ( 12; 112 ) comprising several cells ( 11; 111 ) disposed in parallel associated with at least one cell switch ( 13; 113 ), so as to be able to disconnect them from the remainder of the photovoltaic energy generation device, each of these cells ( 11; 111 ) disposed in parallel comprising a photovoltaic cell ( 7 ), comprising one or more elementary photovoltaic cell(s), and a storage element ( 8 ) connected across the terminals of the photovoltaic cell.

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Номер записи: 86
24-04-2014 дата публикации

Device for Generating Photovoltaic Energy with Blocks of Cells

Номер: US20140109951A1
Автор: Despesse Ghislain
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

Photovoltaic energy generation device, characterized in that it comprises at least one brick () comprising a lower terminal and an upper terminal, between which are arranged two cells (), each comprising a photovoltaic cell (), comprising one or more elementary photovoltaic cell(s), and a storage element () connected to the terminals of the photovoltaic cell, and at least three cell switchs (), so as to be able to dispose the said two cells () in series or in parallel. 1. Photovoltaic energy generation device , wherein it comprises at least one brick comprising a lower terminal and an upper terminal , between which are arranged two cells , each comprising a photovoltaic cell , comprising one or more elementary photovoltaic cell(s) , and a storage element connected to the terminals of the photovoltaic cell , and at least three cell switches , so as to be able to dispose the said two cells in series or in parallel.2. Photovoltaic energy generation device according to claim 1 , wherein the at least one brick comprises a first branch extending between its lower and upper terminals and comprising in this order a cell and a cell switch claim 1 , a second branch between its lower and upper terminals comprising in this order a cell switch and a cell claim 1 , and a transverse branch comprising a cell switch and linking respectively the intermediate terminals disposed between the cell and the cell switch of each of the said two branches.3. Photovoltaic energy generation device according to claim 2 , wherein the at least one brick comprises two additional cell switches disposed respectively on each of the two branches on the cell side with respect to their intermediate terminal.4. Photovoltaic energy generation device according to claim 1 , wherein it comprises a module comprising a tower terminal and an upper terminal claim 1 , between which are disposed two bricks claim 1 , linked by three branches and three switches disposed respectively between the two lower terminals of ...

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Номер записи: 87
29-01-2015 дата публикации

TEMPERATURE CONTROL SYSTEM FOR SOLAR CELL MODULE

Номер: US20150027511A1
Автор: JANG SUNG JIN
Принадлежит: LSIS CO., LTD.

An aspect of present invention is to provide a temperature control system for a solar cell module, capable of controlling a solar cell module to maintain a proper temperature, the temperature control system comprises: a temperature sensor configured to measure a temperature of the solar cell module; a fluid tube having therein a path along which a temperature controlling fluid flows; a pump configured to supply a temperature controlling fluid which flows along the fluid tube; and an inverter configured to drive the pump such that the temperature controlling fluid is supplied, if the current temperature of m the solar cell module is not lower than the pre-stored first pump driving reference temperature, or if the current temperature of the solar cell module is not higher than the pre-stored second pump driving reference temperature. 1. A temperature control system for a solar cell module , the system comprising:a temperature sensor installed at a solar cell module, and configured to measure a temperature of the solar cell module;a fluid tube installed to contact a rear surface of the solar cell module, and having therein a path along which a temperature controlling fluid flows;a pump connected to the fluid tube, and configured to supply the temperature controlling fluid which flows along the fluid tube; andan inverter connected to the solar cell module, and configured to convert a direct current provided from the solar cell module into an alternating current,wherein the inverter is electrically connected to the temperature sensor and the pump,wherein the inverter is configured to compare a current temperature of the solar cell module measured by the temperature sensor, with a pre-stored first pump driving reference temperature or a pre-stored second pump driving reference temperature, andwherein the inverter drives the pump for supply of a temperature controlling fluid, if the current temperature of the solar cell module is not lower than the pre-stored first pump ...

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Номер записи: 88
28-01-2016 дата публикации

SYSTEMS AND METHODS TO MANAGE AND CONTROL RENEWABLE DISTRIBUTED ENERGY RESOURCES

Номер: US20160028275A1
Автор: Donahue Paul W., Kamel Michel Roger
Принадлежит:

A system for analyzing energy usage measures one or more parameters indicative of energy usage for a plurality of sub-circuits, where the sampling rate for the measuring is substantially continuous, and automatically transmits information related to at least one of the measured parameters at a rate that enables monitoring of current energy usage. The system further detects a significant change in a measured parameter, determines whether the significant change in the measured parameter is caused by a change in energy usage, and automatically transmits information related to the significant change in the measured parameter caused by the change in energy usage after detecting the significant change. 1. A method to manage and control solar power generation systems , the method comprising:receiving first digital data associated with electrical energy generated by a solar power generator associated with a facility, wherein the first digital data is received in accordance with a first protocol, and further wherein the first digital data is received at a first rate of at least once per minute;receiving second digital data from a smart meter or one or more submeters associated with the facility, wherein the second digital data provides an indication of electrical energy associated with at least a portion of the facility, wherein the second digital data is received in accordance with a second protocol, and further wherein the second digital data is received at a second rate of at least once per minute;receiving weather-related data and grid-related data over a wide area network, wherein the weather-related data and the grid-related data are received in accordance with a third protocol; andproviding, based at least in part on the first digital data, the second digital data, the weather-related data, and the grid-related data, a control signal to control an inverter that is operationally coupled to the solar power generator, wherein the control signal is provided at a third ...

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Номер записи: 89
26-01-2017 дата публикации

COMPUTATIONALLY EFFICIENT ARC DETECTOR WITH COHERENT SAMPLING

Номер: US20170025996A1
Автор: BRUEGGEMANN HANS, CHEUNG GORDON, HAYDEN JOHN A., MOHAMED AHMED ALI
Принадлежит: ANALOG DEVICES GLOBAL

Switching interference is a primary artifact which affects the accuracy of arc detectors. To address switching interference, conventional arc detectors employ computationally intensive techniques which are often designed specifically for a target application. Thus, conventional arc detectors require a significant amount of hardware to accurately detect arc faults, which can increase costs of the power systems and prohibit wide deployment of arc detectors. With improved signal processing, a unique method for arc detection can accurately detect arc faults efficiently while tolerate switching interference from an inverter of the power system. Specifically, the method provides accurate but efficient arc detection by using a small Fast Fourier Transform with coherent sampling that is accomplished with a common clock generator in combination with signal conditioning. The overall system implementing the method is also programmable to suit a variety of target applications. 1. A method for efficient arc detection that is tolerant to switching interference of an inverter of a power system , the method comprising:sampling, by an analog-to-digital converter, a first signal on a first power line to generate a plurality of first digital samples at a sampling frequency coherent with a switching frequency of a pulse width modulation controller of the inverter;transforming, using a Fast Fourier Transform module, a first window of the first digital samples to a first frequency-domain representation; andclassifying, by an arc detector, whether an arc fault is present in the power system based on the first frequency-domain representation.2. The method of claim 1 , wherein:the analog-to-digital converter and a part of the pulse width modulation controller for generating a pulse width modulation waveform having the switching frequency are clocked by a same clock signal for coherent sampling.3. The method of claim 1 , wherein:the analog-to-digital converter and a part of the pulse width ...

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Номер записи: 90
26-01-2017 дата публикации

APPARATUS AND METHOD FOR ANALYZING POWER GENERATION SYSTEM

Номер: US20170025997A1
Автор: Fujimoto Koji, Inatomi Yuji, SHIBAHARA Kazutomo, SHIODA Tsuyoshi
Принадлежит:

Technique is provided that enables detection of changes in the condition of a power generation system that generates fluctuating power outputs even in a normal condition thereof. A power generation system management apparatus has: range information management means for managing a condition determination power output range corresponding to a range in which a power output at a predetermined measurement point of the power generation system is to be included with a predetermined probability or higher, the condition determination power output range being determined based on a standard deviation of a plurality of model construction power output values, which is calculated using a representative value of the power output at the measurement point and the model construction power output values, the representative value being calculated from a pseudo system model that is created with a non-parametric method using the plurality of model construction power output values. 1. A power generation system analyzer for analyzing a condition of a power generation system , comprising:a range information management unit manages a condition determination power output range corresponding to a range in which a power output at a predetermined measurement point of the power generation system is to be included with a predetermined probability or higher, the condition determination power output range being determined based on a standard deviation of a plurality of model construction power output values, which is calculated using a representative value of the power output at the measurement point and the model construction power output values, the representative value being calculated from a pseudo system model that is created with a non-parametric method using the plurality of model construction power output values, which are model construction power outputs at the measurement point; a power output value acquisition unit acquires the power output measured at the measurement point, as a ...

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Номер записи: 91
25-01-2018 дата публикации

SOLAR PHOTOVOLTAIC GENERATION DEVICE

Номер: US20180026474A1
Автор: MATSUOKA Haruki, Miyoshi Tatsuya, TAKAHASHI Sayuri
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

In a case where it is determined that a generated electric power of a solar panel is less than a predetermined value, a control unit of a solar photovoltaic generation device is configured to disconnect a solar battery from first and second electric power conversion units, stop power supply to the first electric power conversion unit to execute power saving control, and store an open circuit voltage (reference voltage) of the solar panel after the execution of the power saving control. In a case where the open circuit voltage of the solar panel exceeds a reference voltage continuously for a predetermined time after the execution of the power saving control, the control unit is configured to connect the solar battery to the first and second electric power conversion units, and start power supply to the first electric power conversion unit to release the power saving control. 1. A solar photovoltaic generation device using a solar panel , the solar photovoltaic generation device comprising:a first electric power conversion unit configured to receive generated electric power generated by the solar panel as input, convert the generated electric power to first electric power, and output the first electric power;a solar battery connected to the first electric power conversion unit and configured to be chargeable with the first electric power output from the first electric power conversion unit;a second electric power conversion unit connected to the first electric power conversion unit and the solar battery, and configured to receive at least one of the first electric power output from the first electric power conversion unit or second electric power output from the solar battery as input, convert the input electric power to third electric power, and output the third electric power; anda control unit configured to control the solar battery and the first electric power conversion unit based on a state of the solar panel,wherein, in a case where it is determined that the ...

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Номер записи: 92
28-01-2021 дата публикации

Sunlight sensing apparatus of sunlight tracker

Номер: US20210025963A1
Автор: Jae Jin Lee
Принадлежит: Sung Chang Co ltd, Sungchang Energy Lab

The sunlight sensing apparatus includes a sensor portion which includes a first sensor sensing sunlight in a first direction and a second sensor sensing the sunlight in a second direction for altitude adjustment and includes a third sensor sensing the sunlight in a third direction and a fourth sensor sensing the sunlight in a fourth direction for horizontal rotation, in which the first sensor, the second sensor, the third sensor, and the fourth sensor are formed of the solar cells, a power supply portion which charges sensor power formed at the first sensor, the second sensor, the third sensor, and the fourth sensor through a photoelectric effect caused by the sunlight, and a control portion which performs a control operation for transmitting sensing signals. Here, the control portion is driven by the sensor power charged by the power supply portion.

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Номер записи: 93
10-02-2022 дата публикации

Device and method with power control

Номер: US20220045513A1
Автор: Chisung BAE
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A microelectronic device includes: a photovoltaic module configured to convert a light energy into an electric energy; a converter configured to convert a voltage output from the photovoltaic module into a predetermined voltage; a capacitor configured to store an electric energy transferred from the converter; and a controller configured to predict an available current of a next time slot based on the electric energy stored in the capacitor, and determine a consumed current of a load system of the next time slot based on the predicted available current.

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Номер записи: 94
28-01-2021 дата публикации

AUTONOMOUS SOLAR POWER SYSTEM

Номер: US20210026310A1
Автор: Danducci, II Angelo, Nguyen Denny, Ramos Igor S., Ricky Hilary
Принадлежит:

Provided is a method for deploying multiple solar power units to a location. The method comprises determining a location to which a solar power unit is deploying. The method further comprises determining that a second solar power unit is deploying to a same location as the solar power unit. A redeployment plan for the second solar power unit is generated. The redeployment plan is provided to the second solar power unit. The method further comprising deploying the solar power unit to the location. 17-. (canceled)8. A computer program product comprising a computer readable storage medium having program instructions embodied therewith , the program instructions executable by processor to cause the processor to perform a method comprising:determining a location to which a solar power unit is deploying;determining that a second solar power unit is deploying to a same location as the solar power unit;generating a redeployment plan for the second solar power unit;providing, to the second solar power unit, the redeployment plan; anddeploying the solar power unit to the location.9. The computer program product of claim 8 , wherein the redeployment plan for the second solar power unit includes one or more rules for when and how the second solar power unit is permitted to deploy.10. The computer program product of wherein the redeployment plan further includes a path for the second solar power unit to follow when deploying to the location.11. The computer program product of claim 10 , wherein generating the redeployment plan comprises utilizing a pathfinding algorithm selected from the group consisting of the Bellman-Ford algorithm claim 10 , the A* algorithm and Dijkstra's algorithm.12. The computer program product of claim 8 , wherein generating the redeployment plan for the second solar power unit is performed in response to determining that the solar power unit is a primary solar power unit.13. The computer program product of claim 8 , wherein the redeployment plan ...

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Номер записи: 95
28-01-2021 дата публикации

AUTONOMOUS SOLAR POWER SYSTEM

Номер: US20210026311A1
Автор: Danducci, II Angelo, Nguyen Denny, Ramos Igor S., Ricky Hilary
Принадлежит:

Provided is a method for deploying multiple solar power units to a location. The method comprises determining a location to which a solar power unit is deploying. The method further comprises determining that a second solar power unit is deploying to a same location as the solar power unit. A redeployment plan for the second solar power unit is generated. The redeployment plan is provided to the second solar power unit. The method further comprising deploying the solar power unit to the location. 1. A method comprising:determining a location to which a solar power unit is deploying;determining that a second solar power unit is deploying to a same location as the solar power unit;generating a redeployment plan for the second solar power unit;providing, to the second solar power unit, the redeployment plan; anddeploying the solar power unit to the location.2. The method of claim 1 , wherein the redeployment plan for the second solar power unit includes one or more rules for when and how the second solar power unit is permitted to deploy.3. The method of wherein the redeployment plan further includes a path for the second solar power unit to follow when deploying to the location.4. The method of claim 3 , wherein generating the redeployment plan comprises utilizing a pathfinding algorithm selected from the group consisting of the Bellman-Ford algorithm claim 3 , the A* algorithm and Dijkstra's algorithm.5. The method of claim 1 , wherein generating the redeployment plan for the second solar power unit is performed in response to determining that the solar power unit is a primary solar power unit.6. The method of claim 1 , wherein the redeployment plan includes deploying the solar power unit at a first area at the location and deploying the second solar power unit at a second area at the location claim 1 , wherein providing the redeployment plan to the second solar power unit includes:issuing a command to the second solar power unit that causes the second solar power ...

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Номер записи: 96
28-01-2021 дата публикации

SYSTEM AND METHOD FOR ARC DETECTION AND INTERVENTION IN SOLAR ENERGY SYSTEMS

Номер: US20210026382A1
Автор: Arditi Shmuel, Eizips Daniel
Принадлежит:

An arc detection and intervention system for a solar energy system. One or more arc detectors are strategically located among strings of solar panels. In conjunction with local management units (LMUs), arcs can be isolated and affected panels disconnected from the solar energy system. 1. A system , comprising: a switch to control output of electricity generated by a respective photovoltaic panel to which the respective device is locally coupled, and', 'a controller to transmit and receive information; and, 'a plurality of devices, each respective device in the plurality of the devices havinga computing apparatus in communication with controllers in the plurality of devices and in communication with a detector in a photovoltaic system having photovoltaic panels controlled by the plurality of the devices;wherein in response to the detector detecting unusual behavior in the photovoltaic system, the computing apparatus communicates with the controllers to change operations of the photovoltaic panels and identifies a location of the unusual behavior within the photovoltaic system based on responses of the detector as results of changes in the operations of the photovoltaic panels.2. The system of claim 1 , wherein the changes in the operations of the photovoltaic panels include turning off output of a subset of the photovoltaic panels to cause the detector to report absence of unusual behavior in the photovoltaic system.3. The system of claim 2 , wherein output of the subset of the photovoltaic panels is turned off for a predetermined period of time in accordance with communications between the computing apparatus and the controllers; and unusual behavior results of the detector during the predetermined period of time are used to infer the location of the unusual behavior.4. The system of claim 1 , wherein the changes in the operations of the photovoltaic panels include turning off output of the photovoltaic panels one at a time to identify a photovoltaic panel turning ...

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Номер записи: 97
24-01-2019 дата публикации

PHOTOVOLTAIC PANEL RAPID SHUTDOWN AND RECOVERY

Номер: US20190027617A1
Автор: Keyes Edward Patrick, Reinberger Anthony Peter Ernest, VARLAN Mihai
Принадлежит:

A test signal is applied from a continuity test source to a photovoltaic (PV) panel string, to test electrical continuity in the PV panel string and between the PV panel string and an inverter that is coupled to the PV panel string. If the test signal is detected at a PV panel disconnect switch that is separate from the continuity test source and switchably couples one or more Direct Current (DC) PV panels in the PV panel string, then the PV panel disconnect switch is controlled to connect the one or more DC PV panels in the PV panel string. Otherwise, the PV panel disconnect switch is controlled to disconnect the one or more DC PV panels from the PV panel string. The test signal could be, for example, an Alternating Current (AC) signal tuned to a PV installation that includes the PV panel string and the inverter. 1. A method comprising:applying a test signal, from a continuity test source to a photovoltaic (PV) panel string, to test electrical continuity in the PV panel string and between the PV panel string and an inverter that is coupled to the PV panel string;monitoring for presence of the test signal at a PV panel disconnect switch that switchably couples one or more of a plurality of Direct Current (DC) PV panels in the PV panel string;controlling the PV panel disconnect switch to connect the one or more DC PV panels in the PV panel string where the test signal is present at the PV panel disconnect switch;controlling the PV panel disconnect switch to disconnect the one or more DC PV panels from the PV panel string where the test signal is not present at the PV panel disconnect switch.2. The method of claim 1 , wherein the applying comprises:determining whether a string current flowing in the PV panel string is below a threshold;applying the test signal to the PV panel string only where it is determined that the string current is below the threshold.3. The method of further comprising:determining a value of DC current in the PV panel string;controlling the PV ...

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Номер записи: 98
23-01-2020 дата публикации

Techniques For Estimating And Forecasting Solar Power Generation

Номер: US20200026982A1
Автор: Berkheimer Jeff, Clark Remington
Принадлежит: Sacramento Municipal Utility District

A computer system is configured to group solar power systems that provide electric power to an electricity distribution system into clusters. The computer system identifies a solar source meter in each of the clusters that is representative of the respective one of the clusters as a bellwether meter. Each of the bellwether meters monitors a power output of one of the solar power systems in one of the clusters. The computer system receives solar power generation data from the bellwether meters. The computer system generates a solar power generation forecast for each of the clusters of the solar power systems using the solar power generation data from the bellwether meters in respective ones of the clusters. 1. A computer system comprising at least one processor device , wherein the computer system is configured to:group solar power systems that provide electric power to an electricity distribution system into clusters of the solar power systems, wherein each of the clusters comprises a different subset of the solar power systems;identify a solar source meter in each of the clusters that is representative of the respective one of the clusters as a bellwether meter, wherein each of the bellwether meters monitors a power output of one of the solar power systems in one of the clusters;receive solar power generation data from the bellwether meters; andgenerate a solar power generation forecast for each of the clusters of the solar power systems using the solar power generation data from the bellwether meters in respective ones of the clusters.2. The computer system of claim 1 , wherein the computer system is further configured to:adjust historical sunny day solar power generation data received from each of the bellwether meters based on unique features of the solar power systems in the respective ones of the clusters to generate sunny day solar power generation estimates for the solar power systems in the respective ones of the clusters.3. The computer system of claim 2 , ...

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Номер записи: 99
23-01-2020 дата публикации

Method for controlling extraction of power from multiple photo voltaic (pv) arrays and system thereof

Номер: US20200028440A1
Автор: Abhijit Kadam, Prof. Anshuman Shukla
Принадлежит: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY

Embodiments herein provide a system and method for controlling extraction of power from multiple Photo Voltaic (PV) arrays. At least two converters and at least two Photo Voltaic (PV) arrays are configured. The power extraction is controlled through one of an injection of Direct Current (Idc) into output current of each of the at least two converters, or by performing a phase shifting of each of the output current of each of the at least two converters.

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Номер записи: 100