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

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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

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: 22

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: 23

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: 24

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: 25

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: 26

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: 27

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: 28

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: 29

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: 30

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: 31

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: 32

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: 33

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: 34

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: 35

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: 36

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: 37

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: 38

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: 39

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: 40

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: 41

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: 42

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: 43

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: 44

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: 45

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: 46

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: 47

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: 48

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: 49

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: 50

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: 51

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: 52

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: 53

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: 54

28-01-2021 дата публикации

Solar cell and photovoltaic module

Номер: US20210028076A1

Автор: Andreas Beinert, Ulrich Eitner

Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV

A solar cell includes a layer stack that has at least one substrate, at least one doped region and at least one metallization structure. A sensor is integrated in this layer stack.

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Номер записи: 55

28-01-2021 дата публикации

METHOD FOR MECHANICAL LOAD TESTING OF PHOTOVOLTAIC MODULES WITH CONCURRENTLY APPLIED STRESSORS AND DIAGNOSTIC METHODS

Номер: US20210028746A1

Автор: HACKE Peter Ludwig

Принадлежит:

Disclosed herein are improved methods for applying rapid mechanical loading to a photovoltaic module to better simulate the rapid displacements exhibited by photovoltaic modules under wind loading. 1. A method for testing photovoltaic modules comprising providing a force at the edge of a photovoltaic module in order to impart a momentum onto a laminate of the photovoltaic module and measuring the magnitude of the displacement of the laminate.2. The method of further comprising measuring the frequency of the displacement of the laminate.3. The method of wherein the force is applied by electromagnetic claim 1 , electro-mechanical or piezoelectric means.4. The method of wherein the force is applied with position-adjustable mechanical stops at the edge of the photovoltaic module.5. The method of wherein the displacement of the laminate is measured by optical claim 1 , electrical or physical sensing means.6. The method of wherein the optical sensing means comprise a laser.7. The method of wherein the electrical sensing means comprise a strain gauge.8. The method of wherein the physical sensing means comprise a linear variable differential transformer.9. The method of further comprising unobstructed observation of the photovoltaic module during the application of the force.10. The method of wherein the observation comprises optical or electric-optical means.11. The method of further comprising the application of stresses to the photovoltaic module wherein the stresses are selected from the group consisting of optical claim 9 , thermal claim 9 , hydrolytic claim 9 , and electrolytic stresses.12. The method of wherein the magnitude and frequency of the displacement of the laminate comprises highly accelerated stress testing.13. The method of wherein the frequency and the magnitude of the force applied to the edge of the photovoltaic module simulate wind loading of the photovoltaic module.14. A device configured to apply a force to the edge of a photovoltaic module that ...

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Номер записи: 56

01-05-2014 дата публикации

Fault diagnosis system, fault diagnosis device, fault diagnosis method, program, computer-readable medium, and device under test

Номер: US20140117999A1

Автор: Hiroshi Date, Hiroyuki Yamashita, Shigenori Matsuo, Toshiyuki Shigemura

Принадлежит: System JD Co Ltd

A fault diagnosis method utilizing a fault diagnosis system for diagnosing a photovoltaic module by estimating a fault location, the fault diagnosis system including a signal generator for generating and inputting an input signal into a positive terminal or a negative terminal of the photovoltaic module, a waveform observer for observing a reflected output signal from an open end or the fault location, a diagnosis unit for estimating the fault location based on the output signal, a conductive body, and an alignment unit for controlling the positions of the conductive body and/or the photovoltaic module. The diagnosis method includes controlling the positions of the conductive body and/or the photovoltaic module, observing the output signal of the input signal, and estimating the fault location based on two reflected output signals of input signals inputted into the positive terminal and the negative terminal of the photovoltaic module.

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Номер записи: 57

02-02-2017 дата публикации

METHOD FOR DIAGNOSING SOLAR CELL MODULE, AND DIAGNOSTIC CIRCUIT AND DIAGNOSTIC SYSTEM FOR SOLAR CELL MODULE

Номер: US20170033735A1

Автор: IKEDA Tomohiro, MOTONAMI Kaoru, TSUDA Mutsumi, YASHIKI Yasutoshi

Принадлежит: Mitsubishi Electric Corporation

A method for diagnosing a solar cell module includes an analysis of measuring frequency characteristics including a resonance point of impedance between two poles of a solar cell module, and frequency characteristics including a resonance point of impedance between an output cable and a frame, and determining equivalent circuit constants of the solar cell module, and a determination of comparing the equivalent circuit constants determined in the analysis with equivalent circuit constants obtained previously to determine change in condition of the solar cell module. 112-. (canceled)13. A diagnostic method for performing diagnosis of a solar cell module having a conductive frame by measuring frequency characteristics of impedance of the solar cell module during a period of time when solar cells included in the solar cell module do not generate power , using a frequency-variable impedance measuring device connected to the solar cell module , the method comprising:an analysis of measuring frequency characteristics including a resonance point of impedance between two output cables of the solar cell module, and frequency characteristics including a resonance point of impedance between one of the two output cables and the frame, and determining equivalent circuit constants of the solar cell module from the frequency characteristics measured; anda determination of comparing the equivalent circuit constants determined in the analysis with equivalent circuit constants obtained previously to determine change in condition of the solar cell module, whereinthe analysis comprises:measuring first frequency characteristics including a resonance point of impedance between two output cables of the solar cell module;determining equivalent circuit constants for a first equivalent circuit based on the first frequency characteristics;measuring second frequency characteristics including a resonance point of impedance between one of the two output cables and the frame; anddetermining ...

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Номер записи: 58

02-02-2017 дата публикации

METHOD AND SYSTEM FOR TESTING INDIRECT BANDGAP SEMICONDUCTOR DEVICES USING LUMINESCENCE IMAGING

Номер: US20170033736A1

Автор: Bardos Robert Andrew, Trupke Thorsten

Принадлежит:

Embodiments of methods and systems for identifying or determining spatially resolved properties in indirect bandgap semiconductor devices such as solar cells are described. In one embodiment, spatially resolved properties of an indirect bandgap semiconductor device are determined by externally exciting the indirect bandgap semiconductor device to cause the indirect bandgap semiconductor device to emit luminescence (), capturing images of luminescence emitted from the indirect bandgap semiconductor device in response to the external excitation (), and determining spatially resolved properties of the indirect bandgap semiconductor device based on a comparison of relative intensities of regions in one or more of the luminescence images (). 1. An apparatus for determining spatially resolved properties of an indirect bandgap semiconductor device , said apparatus comprising:one or more excitation sources configured for exciting said indirect bandgap semiconductor device to emit luminescence; andan image capture device configured for capturing two or more images of said luminescence emitted by said indirect bandgap semiconductor device, wherein the luminescence in each of the two or more luminescence images is emitted from said indirect bandgap semiconductor device in response to different excitation conditions,wherein said one or more excitation sources comprise:a light source configured for illuminating said indirect bandgap semiconductor device with light suitable for inducing photoluminescence in said indirect bandgap semiconductor device; anda voltage varying source configured for applying an electrical signal to contact terminals of said indirect bandgap semiconductor device to induce electroluminescence in said indirect bandgap semiconductor device, or for varying a voltage level across contact terminals of said indirect bandgap semiconductor device relative to an open circuit value.2. The apparatus according to claim 1 , further comprising a computer configured for ...

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Номер записи: 59

04-02-2016 дата публикации

PHOTOVOLTAIC SYSTEMS AND RELATED TECHNIQUES

Номер: US20160036372A1

Автор: Hoepfner Christian, Kromer Matthew Alan, Mahling Dirk E., Perkinson James R.

Принадлежит: Fraunhofer USA, Inc.

Photovoltaic systems and related techniques are provided. A method for commissioning a photovoltaic (PV) system may include obtaining data describing an arrangement of two or more components of the PV system; performing a test of the PV system, wherein performing the test includes determining whether the PV system complies with at least one PV system criterion based, at least in part, on at least a portion of the data describing the arrangement of the two or more components of the PV system; and in response to determining that the PV system complies with the at least one PV system criterion, activating the PV system and/or notifying a user of the PV system that the PV system complies with the at least one PV system criterion. The method may further include sending information associated with the PV system to a regulatory entity and/or an operator of an electrical grid. 1. A method for commissioning a photovoltaic (PV) system to be installed at a premises , the PV system comprising a plurality of PV panels and electrical components to connect the plurality of PV panels and an electrical grid , the PV system further comprising a PV system controller comprising at least one processor and at least one transceiver to communicate from the PV system to one or more devices outside the premises , the method comprising:obtaining, with the PV system controller of the PV system, data describing an arrangement of two or more components of the PV system, the two or more components comprising at least some of the plurality of PV panels and at least some of the electrical components of the PV system;performing, with the at least one processor, a test of the PV system, wherein performing the test includes determining, based, at least in part, on at least a portion of the data describing the arrangement of the two or more components of the PV system, whether the PV system complies with at least one PV system criterion; andin response to determining that the PV system complies with ...

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Номер записи: 60

04-02-2016 дата публикации

PHOTOVOLTAIC SYSTEMS AND RELATED TECHNIQUES

Номер: US20160036373A1

Автор: Chakrabarty Jacquie Ashmore, Hoepfner Christian, Kromer Matthew Alan, Mahling Dirk E., Perkinson James R.

Принадлежит: Fraunhofer USA, Inc.

Photovoltaic systems and related techniques are provided. A method for commissioning a photovoltaic (PV) system may include obtaining data describing an arrangement of two or more components of the PV system; performing a test of the PV system, wherein performing the test includes determining whether the PV system complies with at least one PV system criterion based, at least in part, on at least a portion of the data describing the arrangement of the two or more components of the PV system; and in response to determining that the PV system complies with the at least one PV system criterion, activating the PV system and/or notifying a user of the PV system that the PV system complies with the at least one PV system criterion. The method may further include sending information associated with the PV system to a regulatory entity and/or an operator of an electrical grid. 1. An apparatus for controlling operation of a photovoltaic (PV) system to be installed at a premises , the PV system comprising a plurality of PV panels and electrical components to connect the plurality of PV panels and an electrical grid , the apparatus comprising:at least one processor;at least one transceiver to communicate from the PV system to one or more devices outside the premises; and communicating, via the at least one transceiver and to a first computing device associated with an authority having jurisdiction over the premises, first information indicating that the PV system has been properly installed at the premises;', 'communicating, via the at least one transceiver and to a second computing device associated with an operator of an electrical grid to which the premises are connected, second information indicating that the PV system has been properly installed at the premises; and', 'in response to receiving from the first computing device and the second computing device authorization to activate the PV system, configuring the PV system to permit a user to activate the PV system and ...

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Номер записи: 61

04-02-2016 дата публикации

Techniques for Optimizing Photo-Voltaic Power Via Inductive Coupling

Номер: US20160036376A1

Автор: Kirchner Peter D., Martin Yves C., van Kessel Theodore G.

Принадлежит:

Techniques for optimizing power production from photo-voltaic systems using, e.g., inductive coupling, are provided. In one aspect, a method of optimizing photo-voltaic generated power from a string of photo-voltaic devices is provided. The method includes the step of: providing corrective power to at least one photovoltaic device in the string of photo-voltaic devices to boost performance of the at least one photovoltaic device and thereby increase overall the photo-voltaic generated power from the string of photo-voltaic devices, wherein the corrective power is from about 1% to about 5%, and ranges therebetween, of the photo-voltaic generated power from the string of photo-voltaic devices. A system for optimizing photo-voltaic generated power from a string of photo-voltaic devices and a method for use thereof are also provided. 1. A method of optimizing photo-voltaic generated power from a string of photo-voltaic devices , the method comprising the step of:providing corrective power to at least one photo-voltaic device in the string of photo-voltaic devices to boost performance of the photo-voltaic device and thereby increase overall the photo-voltaic generated power from the string of photo-voltaic devices, wherein the corrective power is from about 1% to about 5%, and ranges therebetween, of the photo-voltaic generated power from the string of photo-voltaic devices.2. The method of claim 1 , wherein the corrective power is provided to the at least one photo-voltaic device via a corrective power conducting line that is separate from a main conducting line carrying the photo-voltaic generated power from the string of photo-voltaic devices.3. The method of claim 1 , wherein each photo-voltaic device in the string of photo-voltaic devices comprises a photo-voltaic panel having multiple photo-voltaic cells.4. The method of claim 1 , wherein the corrective power is provided to the at least one photo-voltaic device using inductive coupling.5. The method of claim 1 , ...

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Номер записи: 62

04-02-2016 дата публикации

PHOTOVOLTAIC SYSTEMS AND RELATED TECHNIQUES

Номер: US20160036381A1

Автор: Hoepfner Christian, Kromer Matthew Alan, Mahling Dirk E., Perkinson James R.

Принадлежит: Fraunhofer USA, Inc.

Photovoltaic systems and related techniques are provided. A method for commissioning a photovoltaic (PV) system may include obtaining data describing an arrangement of two or more components of the PV system; performing a test of the PV system, wherein performing the test includes determining whether the PV system complies with at least one PV system criterion based, at least in part, on at least a portion of the data describing the arrangement of the two or more components of the PV system; and in response to determining that the PV system complies with the at least one PV system criterion, activating the PV system and/or notifying a user of the PV system that the PV system complies with the at least one PV system criterion. The method may further include sending information associated with the PV system to a regulatory entity and/or an operator of an electrical grid. 1. An apparatus for controlling operation of a photovoltaic (PV) system to be installed at a premises , the PV system comprising a plurality of PV panels and electrical components to connect the plurality of PV panels and an electrical grid , the apparatus comprising:at least one processor;at least one transceiver to communicate from the PV system to one or more devices outside the premises; and probing the PV system to obtain information on components of the PV system and interconnections of the components;', 'determining, based at least in part on the information obtained through the probing, whether each of a plurality of requirements for properly-installed PV systems is met; and', 'in response to determining that all of the plurality of requirements are met, outputting an indication that the PV system has been properly installed at the premises., 'determining whether the PV system has been properly installed at the premises, wherein the determining comprises, 'at least one storage medium having encoded thereon executable instructions that, when executed by the at least one processor, cause the at ...

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Номер записи: 63

01-02-2018 дата публикации

PHOTOVOLTAIC POWER GENERATION SYSTEM EVALUATION APPARATUS, EVALUATION METHOD, AND STORAGE MEDIUM STORING A PROGRAM FOR AN EVALUATION APPARATUS

Номер: US20180034410A1

Автор: FUJITA Yuji, Hishikawa Yoshihiro, KOJIMA Hisashi, Takeda Yoshikazu

Принадлежит:

In order to provide an evaluation apparatus that is capable of measuring the performance of a photovoltaic power generation system accurately while using simple equipment outdoors using sunlight, there are provided a plurality of illumination intensity sensors disposed in the vicinity of the photovoltaic panels, and an evaluator that is connected to a PCS and to the sensors, and evaluates the performance of the photovoltaic power generation system based on outputs from each of these, and the evaluator includes an output acquisition unit that acquires an output of the photovoltaic panels from the PCS, a consistency degree calculation unit that calculates a degree of consistency in illumination intensity measurement values measured by the sensors, and a determination unit that, when the degree of consistency is within a predetermined permissible range, determines that the output of the photovoltaic panels acquired by the output acquisition unit is a true value. 1. A photovoltaic power generation system evaluation apparatus that evaluates a performance of a photovoltaic power generation system that comprises photovoltaic panels which are configured by a plurality of photovoltaic cells , and a PCS (Power Control System) that is connected to the photovoltaic panels and performs MPPT (Maximum Power Point Tracking) control , comprising:a plurality of illumination intensity sensors that are disposed in the vicinity of the photovoltaic panels; andan evaluator that is connected wirelessly or by wires to the PCS and to the plurality of illumination intensity sensors, and evaluates the performance of the photovoltaic power generation system based on outputs from each of the PCS and the plurality of illumination intensity sensors, wherein an output acquisition unit that acquires an output of the photovoltaic panels from the PCS;', 'a consistency degree calculation unit that calculates a degree of consistency in illumination intensity measurement values measured by the plurality ...

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Номер записи: 64

01-02-2018 дата публикации

METHOD AND APPARATUS FOR DETERMINING KEY PERFORMANCE PHOTOVOLTAIC CHARACTERISTICS USING SENSORS FROM MODULE-LEVEL POWER ELECTRONICS

Номер: US20180034411A1

Автор: Charles Nathan, Smith Benjamin Lewis

Принадлежит:

A method and apparatus for using MLPE data for characterizing real-world operation a PV module. In one embodiment, the method comprises obtaining a plurality of temperature measurements, wherein each temperature measurement is a measure, by an MLPE proximate to a PV module, of temperature; obtaining a plurality of DC voltage measurements, wherein each DC voltage measurement of the plurality of DC voltage measurements is a measure by the MLPE of a DC voltage of the PV module; obtaining a plurality of DC current measurements, wherein each DC current measurement of the plurality of DC voltage measurements is a measure by the MLPE of a DC current of the PV module; obtaining racking design information with respect to the PV module; and determining a plurality of PV module temperatures for the PV module based on the plurality of temperature measurements and the racking design information. 1. A method of using module-level power electronics (MLPE) data for characterizing real-world operation a photovoltaic (PV) module , comprising:obtaining a pluraltiy of temperature measurements, wherein each temperature measurement of the pluraltiy of temperature measurements is a measure, by an MLPE proximate to a PV module, of temperature;obtaining a plurality of DC voltage measurements, wherein each DC voltage measurement of the plurality of DC voltage measurements is a measure by the MLPE of a DC voltage of the PV module;obtaining a pluraltiy of DC current measurements, wherein each DC current measurement of the plurality of DC voltage measurements is a measure by the MLPE of a DC current of the PV module;obtaining racking design information with respect to the PV module; anddetermining a pluraltiy of PV module temperatures for the PV module based on the plurality of temperature measurements and the racking design information.2. The method of claim 1 , further comprising determining an equation for a linear regression line with respect to the plurality of DC voltage measurements and ...

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Номер записи: 65

17-02-2022 дата публикации

Photovoltaic Power Generation System

Номер: US20220052529A1

Автор: ZHANG Gaole, ZHANG Zhixuan

Принадлежит:

The present disclosure provides a photovoltaic power generation system, relating to the technical field of new energy resources, including at least two photovoltaic power generation devices; each photovoltaic power generation device includes: a photovoltaic panel unit, which is configured to generate light-sensitive electrical energy based on photovoltaic effect; an energy storage unit, which is connected to an output end of the photovoltaic panel unit, and is configured to store the light-sensitive electrical energy; an input unit, of which one end is connected to the energy storage unit, and the other end is connected to the output end of the photovoltaic panel unit of the other photovoltaic power generation device; and an output unit, of which one end is connected to the output end of the photovoltaic panel unit, and the other end is connected to the energy storage unit of the other photovoltaic power generation device. 1. A photovoltaic power generation system , comprising at least two photovoltaic power generation devices ,wherein each of the photovoltaic power generation devices comprises:a photovoltaic panel unit, which is configured to generate light-sensitive electrical energy based on photovoltaic effect;an energy storage unit, which is connected to an output end of the photovoltaic panel unit, and is configured to store the light-sensitive electrical energy;an input unit, of which one end is connected to the energy storage unit, and the other end is connected to an output end of a photovoltaic panel unit of the other photovoltaic power generation device; andan output unit, of which one end is connected to the output end of the photovoltaic panel unit, and the other end is connected to an energy storage unit of the other photovoltaic power generation device.2. The photovoltaic power generation system according to claim 1 , wherein the photovoltaic power generation device further comprises:a detecting unit, which is connected to the photovoltaic panel unit, ...

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Номер записи: 66

17-02-2022 дата публикации

PV-DEVICE HAVING REDUCED AGING

Номер: US20220052639A1

Автор: Fleischer Maximilian, Pohle Roland, Simon Elfriede, Von Sicard Oliver

Принадлежит: Siemens Energy Global GmbH & Co. KG

A photovoltaic device having a perovskite PV cell having reduced aging. The internal temperature of the perovskite PV cell, or a measure thereof, is determined using a measurement of an electrical parameter. In the case that it is detected that the corresponding measured value exceeds a threshold value, i.e., that the internal temperature is too high, the operating conditions of the perovskite PV cell are adjusted to the effect that the internal temperature reduces again. This can be achieved, for example, by an input resistance of power electronics of the perovskite PV cell being adjusted such that lower ohmic losses occur, as a result of the correspondingly altered electric currents. 1. A photovoltaic (PV) device comprising:{'b': '1', 'a perovskite PV cell for converting light impinging on the perovskite PV cell into an electrical output voltage U, and'}an arrangement for ascertaining a gauge for an internal temperature of the perovskite PV cell,{'b': 1', '1', '1, 'wherein the arrangement is designed, at least in a measuring state of the PV device, to measure an electrical parameter PARAM(t) of the perovskite PV cell and to ascertain the gauge for the instantaneous internal temperature T(t) of the perovskite PV cell from the measured parameter PARAM(t).'}2. The PV device as claimed in claim 1 ,wherein the arrangement is designed to compare the ascertained gauge for the instantaneous internal temperature of the perovskite PV cell with a threshold value, and,{'b': '1', 'for a specific case in which the ascertained gauge for the instantaneous internal temperature T(t) exceeds the threshold value, to adjust operating conditions of the perovskite PV cell in such a way that the internal temperature of the perovskite PV cell falls.'}3. The PV device as claimed in claim 2 ,{'b': 1', '2', '1, 'wherein the arrangement is designed to operate a power electronics unit of the PV device, which at least in a normal operating state of the PV device converts the electrical output ...

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Номер записи: 67

17-02-2022 дата публикации

Testing of a Photovoltaic Panel

Номер: US20220052640A1

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. 221-. (canceled) The present application is a continuation of U.S. patent application Ser. No. 14/954,209, filed on Nov. 30, 2015, which is a continuation of U.S. patent application Ser. No. 13/015,219, filed on Jan. 27, 2011, which is a continuation-in-part application of U.S. patent application Ser. No. 12/314,115 filed on Dec. 4, 2008, (now issued as U.S. Pat. No. 8,324,921) the disclosures of which are included herein by reference.The present invention relates to production testing of photovoltaic panels, and more specifically to testing of photovoltaic panels which include integrated circuitry.Current voltage (IV) characteristics of a conventional photovoltaic panel are measured using a flash tester. The flash tester measures electrical current characteristics of a photovoltaic panel during a single flash of light of duration typically within one millisecond emitted by the flash lamp. The measurement procedure is based on known properties of a reference photovoltaic panel which has been independently calibrated in an external laboratory. The external laboratory has determined accurately the short circuit current corresponding to standard test conditions (STC) using an AM1.5G spectrum. AM1.5G approximates a standard spectrum of sunlight at the Earth's surface at sea level at high noon in a clear sky as 1000 W/m2. “AM” stands for “air ...

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Номер записи: 68

11-02-2016 дата публикации

Solar power generation assembly and method for providing same

Номер: US20160043685A1

Автор: Laurence Mackler

Принадлежит: SunPower Corp

The present invention relates to a solar power generation assembly and method for providing same involving an array of solar generating modules on a dual-incline structure, which can achieve high energy yields over a wide range of azimuths/orientations. The assembly consists of canopy wings providing for the dual-incline structure, where, depending on specifications, the canopy wings can differ in length, width, angle of inclination, structural material and solar module or other material mounted on the surface. The canopy wings may be pivoted or hinged to enhance the energy generation and/or other functional benefits of the assembly or system, including display elements, advertising, rainwater/precipitation and snow drainage and collection and energy transmission. The assembly or system is modular and may be assembled in a long continuous configuration in which the inclination, width and tilt of the canopy wings may vary of a long distance to maintain substantially consistent energy yields as the assembly or system orientation changes.

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Номер записи: 69

08-02-2018 дата публикации

PHOTOVOLTAIC STRING COMBINER WITH MODULAR PLATFORM ARCHITECTURE

Номер: US20180041163A1

Автор: Alhoor Wisam M., White Paul M.

Принадлежит:

One or more techniques and/or systems are provided for managing a photovoltaic arrangement. A photovoltaic string combiner may be configured to combine a set of photovoltaic strings of the photovoltaic arrangement. The photovoltaic string combiner comprises a modular platform architecture configured to host one or monitoring modules in a plug and play manner based upon a drop in topology where a user may easily install or remove monitoring modules from the modular platform architecture. A monitoring module may automatically self-detect, such as during boot up, positional data (e.g., an indication that the monitoring module is to monitor a first set of 8 photovoltaic strings) and/or configuration data (e.g., calibration data, a grounded configuration, a floating configuration, etc.). The monitoring modules may provide positional data, configuration data, and/or measurement data (e.g., a current measurement from a photovoltaic string) to a main controller module that manages the photovoltaic arrangement. 1. A system for managing a photovoltaic arrangement , comprising: [ self-detect at least one of first positional data of the first monitoring module within the modular platform architecture or first configuration data of the first monitoring module; and', 'obtain first measurement data from a first photovoltaic string connected to the first monitoring module; and, 'a modular platform architecture configured to host one or more monitoring modules interconnected by a communication channel, the one or more monitoring modules comprising a first monitoring module comprising a first local processor configured to, 'a main controller module, connected to the modular platform architecture by the communication channel, configured to determine a state of the photovoltaic arrangement based upon at least one of positional data, configuration data, or measurement data received from the one or more monitoring modules., 'a photovoltaic string combiner configured to combine a set of ...

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Номер записи: 70

08-02-2018 дата публикации

SOLAR POWER GENERATION SYSTEM INSPECTION METHOD AND INSPECTION APPARATUS

Номер: US20180041164A1

Автор: Misumi Shuichi, Morita Kosuke, SANO Akihiko

Принадлежит: Omron Corporation

A ground fault detection apparatus includes a PV current detection unit, a ground fault current detection circuit, an electric power delivery path switching switch that switches the connection of a solar cell string from a PCS side to the ground fault current detection circuit, and a control unit that, when the solar cell string is in a switchable state, switches the electric power delivery path switching switch to the ground fault current detection circuit side. 1. A solar power generation system inspection apparatus that inspects a plurality of solar cell strings that are connected to a power conversion apparatus , the solar power generation system inspection apparatus comprising:voltage measurement units that measure output voltages of the solar cell strings;an inspection unit that inspects the solar cell strings;a first switching unit that is provided for each of the solar cell strings and switches a connection of the solar cell string between the power conversion apparatus side and the inspection unit side;a determination unit that determines that a solar cell string is in a switchable state if at least a condition that the output voltage of the solar cell string is less than or equal to a first threshold value is satisfied; anda control unit that performs control so as to switch the first switching units to the inspection unit side if it is determined that the solar cell string is in the switchable state.2. The solar power generation system inspection apparatus according to claim 1 ,wherein the determination unit further determines that the solar cell string is in an inspection ready state if a condition that the output voltage of the solar cell string is greater than zero is satisfied.3. The solar power generation system inspection apparatus according to claim 1 , further comprisingcurrent measurement units that measure output currents of the solar cell strings,wherein the determination unit further determines that the solar cell string is in the switchable ...

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Номер записи: 71

08-02-2018 дата публикации

HIGH THROUGHPUT SYSTEM FOR PHOTOVOLTAIC UV DEGRADATION TESTING

Номер: US20180041165A1

Автор: Buratti Yoann, Lacerda Ryan Manuel, Qiu Taiqing, Soltz David Aitan, TU Xiuwen

Принадлежит:

High throughput systems for photovoltaic UV degradation testing of solar cells, and methods of testing for UV degradation of solar cell during manufacture, are described herein. In an example, a high throughput solar cell testing apparatus includes a plurality of real time ultra-violet (RTUV) testing modules. Each of the RTUV testing modules includes an ultra-violet (UV) light source, an optics assembly for focusing light from the UV light source on a sample area, and a detector for receiving photoluminescence energy from the sample area. The high throughput solar cell testing apparatus also includes an acquisition and control assembly coupled to the plurality of RTUV testing modules. 1. A high throughput solar cell testing apparatus , comprising: an ultra-violet (UV) light source;', 'an optics assembly for focusing light from the UV light source on a sample area; and', 'a detector for receiving photoluminescence energy from the sample area; and, 'a plurality of real time ultra-violet (RTUV) testing modules, each of the RTUV testing modules comprisingan acquisition and control assembly coupled to the plurality of RTUV testing modules.2. The testing apparatus of claim 1 , wherein the UV light source of each of the plurality of RTUV testing modules comprises a near UV light emitting diode (LED) having an output wavelength approximately in the range of 300-400 nanometers.3. The testing apparatus of claim 1 , wherein the optics assembly of each of the plurality of RTUV testing modules is configured to provide a UV light spot on the sample area claim 1 , the UV light spot having a dimension of less than approximately 2 millimeters.4. The testing apparatus of claim 3 , wherein the UV light spot is approximately circular claim 3 , and the dimension of less than approximately 2 millimeters is a diameter of the UV light spot.5. The testing apparatus of claim 3 , wherein the UV light spot is approximately square claim 3 , and the dimension of less than approximately 2 ...

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Номер записи: 72

24-02-2022 дата публикации

INVERTER, COMBINER BOX, AND PHOTOVOLTAIC SYSTEM

Номер: US20220060146A1

Автор: JU Peng, LIN Tiansan

Принадлежит:

Embodiments of this application disclose a design of an inverter and a design of a combiner box, to reduce maintenance costs of a photovoltaic device. According to the inverter or the combiner box provided in the embodiments of this application, when electroluminescence (EL) defect detection is performed on the photovoltaic device, a reverse charging circuit integrated into the inverter or integrated into the combiner box is used to output a direct current to a to-be-tested photovoltaic string of the photovoltaic device. Whether the to-be-tested photovoltaic string has defects is determined based on a light emission status of the to-be-tested photovoltaic string. By using the foregoing designs, maintenance engineers do not need to modify wiring terminals of the photovoltaic device when performing EL defect tests on the photovoltaic device. This helps reduce maintenance costs of the photovoltaic device. 1. An inverter , wherein an input end of the inverter is configured to connect to at least one photovoltaic string of a photovoltaic device , and the inverter comprises a control circuit and a reverse charging circuit;the control circuit is configured to enable the reverse charging circuit to output a first direct current when the inverter tests the at least one photovoltaic string of the photovoltaic device;the reverse charging circuit is configured to output the first direct current to the at least one photovoltaic string of the photovoltaic device; andthe first direct current is used to excite the at least one photovoltaic string of the photovoltaic device to emit light.2. The inverter according to claim 1 , wherein input of the reverse charging circuit comprises a second direct current.3. The inverter according to claim 2 , wherein the at least one photovoltaic string of the photovoltaic device comprises a first photovoltaic string and a second photovoltaic string;the reverse charging circuit comprises an output circuit;when the reverse charging circuit is ...

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Номер записи: 73

18-02-2016 дата публикации

Method and Device for Measuring Energy of Electrons Excited by Sunlight

Номер: US20160047760A1

Автор: HARADA Shunta, ICHIHASHI Fumiaki, Kuwahara Makoto, SHIMURA Daiki, UJIHARA Toru

Принадлежит: National University Corporation Nagoya University

A technique of measuring energy of electrons excited by exposing a semiconductor material to solar ray is proposed. A surface layer having a negative electron affinity is formed on the surface of a semiconductor material. The semiconductor material is placed in a vacuum environment and exposed to solar ray. Photoelectrons emitted from the surface layer having the negative electron affinity are guided to an energy analyzer, and the energy of electrons excited by the solar ray is measured. Since the surface layer having the negative electron affinity is used, the photoelectrons are obtained from the electrons excited by the solar ray, and thereby energy measurement becomes possible. 17-. (canceled)8. A method for measuring energy and wavenumber of electrons excited by solar ray , the method comprising:forming a surface layer having a negative electron affinity on a surface of a semiconductor material;placing the semiconductor material in a vacuum environment and exposing the same to solar ray;accelerating photoelectrons discharged from the surface layer toward an energy analyzer; anddispersing the photoelectrons incident into the energy analyzer based on energy and emission angle of the photoelectrons.9. The method according to claim 8 , further comprising:adjusting a voltage used for acceleration to adjust an angular resolution. .10. The method according to claim 8 , wherein;the semiconductor material is exposed at a specific wavelength in solar ray.11. A method for measuring temporal change of energy of electrons excited by solar ray claim 8 , the method comprising:forming a surface layer having a negative electron affinity on a surface of a semiconductor material;placing the semiconductor material in a vacuum environment and exposing the same to solar ray;accelerating photoelectrons discharged from the surface layer toward an energy analyzer;dispersing the photoelectrons incident into the energy analyzer based on energy of the photoelectrons repeatedly, ...

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Номер записи: 74

07-02-2019 дата публикации

DEVICES AND METHODS FOR DE-ENERGIZING A PHOTOVOLTAIC SYSTEM

Номер: US20190044323A1

Автор: DELINE Christopher Alan

Принадлежит:

Devices and methods for de-energizing a photovoltaic (PV) system are provided. According to an aspect of the invention, a method includes detecting a resistance between a first photovoltaic unit and ground, wherein the first photovoltaic unit is connected to at least one additional photovoltaic unit. If the resistance is less than a threshold, the first photovoltaic unit is shorted by connecting a positive conductor of the first photovoltaic unit with a negative conductor of the first photovoltaic unit. Shorting the first photovoltaic unit causes the at least one additional photovoltaic unit to detect the resistance that is less than the threshold, thereby shorting the at least one additional photovoltaic unit by connecting a positive conductor of the at least one additional photovoltaic unit with a negative conductor of the at least one additional photovoltaic unit. 1. A method comprising:detecting a resistance between a first photovoltaic unit and ground, wherein the first photovoltaic unit is connected to at least one additional photovoltaic unit; andif the resistance is less than a threshold, shorting the first photovoltaic unit by connecting a positive conductor of the first photovoltaic unit with a negative conductor of the first photovoltaic unit,wherein shorting the first photovoltaic unit causes the at least one additional photovoltaic unit to detect the resistance that is less than the threshold, thereby shorting the at least one additional photovoltaic unit by connecting a positive conductor of the at least one additional photovoltaic unit with a negative conductor of the at least one additional photovoltaic unit.2. The method according to claim 1 , wherein the resistance that is less than the threshold is caused by a failure of the first photovoltaic unit.3. The method according to claim 2 , wherein the failure is caused by conductor damage within the first photovoltaic unit.4. The method according to claim 1 , wherein the resistance that is less than ...

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Номер записи: 75

18-02-2021 дата публикации

FAULT POINT POSITION DETERMINING METHOD AND APPARATUS AND PHOTOVOLTAIC SYSTEM

Номер: US20210050816A1

Автор: GU Guilei, Ma Xun, SHUI Wei

Принадлежит:

Embodiments of this application disclose a fault point position determining method and apparatus and a photovoltaic system, to correctly and efficiently determine a fault point position when a disconnection fault occurs in a photovoltaic system. The method is applied to a photovoltaic system, the photovoltaic system includes at least one inverter and at least one photovoltaic unit, each photovoltaic unit includes at least one photovoltaic module and one photovoltaic module controller, and the method includes: sending, by an inverter, a first test signal to the at least one photovoltaic unit; obtaining, by the inverter, first test signal characteristic information fed back by the at least one photovoltaic unit; and performing, by the inverter, absolute value or relative value sorting on the at least one piece of first test signal characteristic information, and determining a fault point in the photovoltaic system based on a sorting result. 1. A method for determining a fault point position , comprising:sending, by an inverter of a photovoltaic system, a first test signal to at least one photovoltaic unit of the photovoltaic system;obtaining, by the inverter, first test signal characteristic information fed back by the at least one photovoltaic unit;performing, by the inverter, absolute value or relative value sorting on at least one piece of first test signal characteristic information; anddetermining a fault point in the photovoltaic system based on a sorting result.2. The method according to claim 1 , wherein the first test signal characteristic information comprises one or more of the following:signal strength information of the first test signal; orimpedance information of the first test signal.3. The method according to claim 1 , wherein determining a fault point in the photovoltaic system based on the sorting result comprises:determining, by the inverter, that an absolute value or a relative value of first test signal characteristic information fed back by a ...

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Номер записи: 76

18-02-2021 дата публикации

INSPECTION SYSTEM FOR CONCENTRATING PHOTOVOLTAIC APPARATUS AND INSPECTION METHOD FOR LIGHT RECEIVING PART

Номер: US20210050817A1

Автор: Iwasaki Takashi, Saito Kenji

Принадлежит: Sumitomo Electric Industries, Ltd.

This inspection system for a concentrator photovoltaic apparatus includes: a module; a tracking mount configured to track the sun, the tracking mount having mounted thereto an array formed by assembling a plurality of the modules; an inverter apparatus to extract a direct-current power generated by the array, convert the direct-current power into an alternating-current power, and output the alternating-current power; and an imaging apparatus being positioned between the sun and the array tracking the sun, the imaging apparatus taking an image of the array from a direction orthogonal to a surface of the array. While the array is tracking the sun and is causing sunlight to be concentrated on the cell, the inverter apparatus produces a state where extraction of a power from the array is restricted, to cause the cell to spontaneously emit light, and the imaging apparatus takes an image of the emitted light of the cell. 1. An inspection system for a concentrator photovoltaic apparatus , the inspection system comprising:a module formed by assembling, in a housing, units in each of which a light receiving portion including a cell for power generation is provided at a position where sunlight is concentrated by a concentrating portion;a tracking mount configured to track the sun, the tracking mount having mounted thereto an array formed by assembling a plurality of the modules;an inverter apparatus configured to extract a direct-current power generated by the array, convert the direct-current power into an alternating-current power, and output the alternating-current power; andan imaging apparatus being positioned between the sun and the array tracking the sun, the imaging apparatus being configured to take an image of the array from a direction orthogonal to a surface of the array, whereinwhile the array is tracking the sun and is causing sunlight to be concentrated on the cell,the inverter apparatus produces a restricted state where extraction of a power from the array is ...

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Номер записи: 77

14-02-2019 дата публикации

SOLAR SIMULATOR FILTER AND A METHOD OF FABRICATING THEREOF

Номер: US20190049078A1

Автор: AL-GHAMDI Ahmed A., YAKUPHANOGLU Fahrettin

Принадлежит: KING ABDULAZIZ UNIVERSITY

A solar simulator filter that includes a flexible substrate and one or more layers of oxide materials, e.g. fluorine-doped tin oxide and indium-doped tin oxide, wherein a thickness of said layers is no more than 500 nm, and wherein the solar simulator filter generates a spectral output that closely matches a solar irradiance spectrum. Various embodiments of the solar simulator filter and a method of fabricating thereof is described. 1. A solar simulator filter , comprising:a flexible substrate; andan oxide material disposed on the flexible substrate, wherein the oxide material comprises fluorine-doped tin oxide, and{'sup': 2', '2', '2, 'wherein the solar simulator filter transmits light having an irradiance in the range of 1.0 to 1.6 W/m/nm in the wavelength range of 300 to 750 nm, an irradiance in the range of 0.4 to 1.0 W/m/nm in the wavelength range of 750 to 1,400 nm, and an irradiance in the range of 0.1 to 0.4 W/m/nm in the wavelength range of 1,400 to 2,500 nm.'}2. The solar simulator filter of claim 1 , wherein the oxide material further comprises an oxide of a post-transition metal selected from the groups 13 to 15 of the periodic table.3. The solar simulator filter of claim 2 , wherein the oxide of the post-transition metal is indium oxide claim 2 , tin oxide claim 2 , and/or indium-doped tin oxide.4. The solar simulator filter of claim 1 , wherein the flexible substrate has a transmittance of at least 60% at a wavelength in the range of 300 to 2 claim 1 ,500 nm.5. The solar simulator filter of claim 1 , wherein the flexible substrate is a thermoplastic polymer selected from the group consisting of polyethylene terephthalate claim 1 , polyethylene claim 1 , polypropylene claim 1 , and polyvinyl chloride.6. The solar simulator filter of claim 1 , wherein an average particle size of the fluorine-doped tin oxide is in the range of 1 to 100 nm.7. The solar simulator filter of claim 1 , wherein an amount of fluorine in the fluorine-doped tin oxide is in the ...

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Номер записи: 78

03-03-2022 дата публикации

PHOTOVOLTAIC SYSTEM, METHOD FOR LOCATING DEVICES IN PHOTOVOLTAIC STRING, MLPE APPARATUS AND METHOD FOR RANKING MLPE APPARATUSES

Номер: US20220069586A1

Автор: Jiang Anying, LI Xiaoxun, Wang Xinyu, YU Yanfei

Принадлежит: SUNGROW POWER SUPPLY CO., LTD.

A photovoltaic system, a method for locating devices in a photovoltaic string, a MLPE apparatus, and a method for ranking MLPE apparatuses. Each MLPE apparatus sends, actively according to a predetermine rule, an initial message to the other MLPE apparatuses. The initial message includes a serial number corresponding to said MLPE apparatus and an accumulated operation duration of said MLPE apparatus. The MLPE apparatuses determine the rank of the accumulated operation duration of each MLPE apparatus according to the initial messages sent from all MLPE apparatuses. After each MLPE apparatus communicates with a communication host, the MLPE apparatuses reports the rank of the accumulated operation duration of each MLPE apparatus to the communication host. Thereby, the communication host may determine a physical location of each device in the photovoltaic string according to the ranks of the accumulated operation durations and a sequence of installing positions of the devices in the photovoltaic string.

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Номер записи: 79

22-02-2018 дата публикации

Scanning device

Номер: US20180052379A1

Автор: John T. Apostolos, William Mouyos

Принадлежит: AMI Research and Development LLC

A scanning optical device suitable for use as a camera or solar concentrator.

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Номер записи: 80

23-02-2017 дата публикации

OPTICAL INSPECTION DEVICE AND OPTICAL INSPECTION FIXTURE THEREOF

Номер: US20170052340A1

Автор: Hsieh Tsung-Ju, LIU Chang-Ming

Принадлежит:

An optical inspection fixture includes a first bracket, a second bracket and at least one loading surface. The first bracket is provided with at least one first arm. The second bracket and the first bracket are separated from each other so as to define a light traveling path that lights can go through. The second bracket is provided with at least one second arm which is separated from the first arm. The loading surface is between the first bracket and the second bracket, and connected to at least one of the first arm and the second arm, and the loading surface is used to carry an optical conversion element. 1. An optical inspection fixture comprising:a first bracket provided with at least one first arm;a second bracket provided with at least one second arm separated from the first arm, wherein the second bracket and the first bracket are separated from each other so that a light traveling path that lights from a light source are able to go through is defined therebetween; andat least one loading surface disposed between the first bracket and the second bracket, and connected to at least one of the first bracket and the second bracket, for carrying an optical conversion element.2. The optical inspection fixture of claim 1 , wherein the first arm and the second arm respectively extend in a first axial direction and the loading surface extends in a second axial direction which is perpendicular to the first axial direction.3. The optical inspection fixture of claim 2 , wherein at least one first gap is formed between a plurality of the first arms claim 2 , at least one second gap is formed between a plurality of the second arms claim 2 , the light traveling path is connected to the first gap and the second gap claim 2 , a plurality of the loading surfaces are disposed in the light traveling path claim 2 , and the loading surfaces are respectively connected to the first arms and the second arms claim 2 , and the first gap and the second gap respectively separate the ...

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Номер записи: 81

25-02-2016 дата публикации

METHOD AND SYSTEM FOR CONTROLLING THE QUALITY OF A PHOTOVOLTAIC DEVICE

Номер: US20160056761A1

Автор: Mabille Loïc

Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

The photovoltaic device comprises a photovoltaic cell () assembled with a substrate () by way of an assembly interface. The method comprises a step of injecting an electrical current through the photovoltaic cell and a step of acquiring a signal measuring the luminous radiation emitted by the photovoltaic cell (), by electroluminescence, in response to the injected current. The injection current has a density higher than a preset assembly defect detection current threshold. A step of detecting at least one defect in the assembly interface on the basis of said acquired measuring signal is provided. 1. Method for controlling the quality of a photovoltaic device comprising a photovoltaic cell assembled with a substrate by way of an assembly interface , comprising the following steps:a. injecting an electrical current through the photovoltaic cell; andb. acquiring a signal measuring the luminous radiation emitted by the photovoltaic cell, by electroluminescence, in response to the injected current;wherein the injection current is a first current having a density higher than a preset assembly defect detection current threshold, and a step of detecting at least one defect in the assembly interface on the basis of said acquired measuring signal is provided.2. Method according to claim 1 , wherein the assembly defect detection threshold is equal to 1 A·cm.3. Method according to claim 1 , wherein the first current is injected in the form of a pulse of a preset duration.4. Method according to claim 3 , wherein the duration of the current pulse is comprised between 1 ms and 10 s.5. Method according to claim 1 , wherein the step of acquiring the luminous radiation measuring signal is synchronized with the step of injecting the first current.6. Method according to claim 1 , wherein from the acquired measuring signal an image representative of an emitting area of the cell is formed claim 1 , each image pixel being characterized by a measured physical quantity representative of ...

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Номер записи: 82

14-02-2019 дата публикации

LOCALIZED POWER POINT OPTIMIZER FOR SOLAR CELL INSTALLATIONS

Номер: US20190052091A1

Автор: Klein David L., NOWOROLSKI Jan Mark

Принадлежит: SunPower Corporation

In one embodiment, a solar cell installation includes several groups of solar cells. Each group of solar cells has a local power point optimizer configured to control power generation of the group. The local power point optimizer may be configured to determine an optimum operating condition for a corresponding group of solar cells. The local power point optimizer may adjust the operating condition of the group to the optimum operating condition by modulating a transistor, such as by pulse width modulation, to electrically connect and disconnect the group from the installation. The local power point optimizer may be used in conjunction with a global maximum power point tracking module. 2. The solar cell installation of further comprising:a second group of serially-connected solar cells having a second positive terminal and a second negative terminal; anda second local power point optimizer coupled to the second positive terminal and the second negative terminal, the second local power point optimizer including:(a) a second transistor coupled to the second positive terminal,(b) a power point controller configured to control a voltage of the second group of serially-connected solar cells by modulating the second transistor to electrically connect and disconnect the second group of serially-connected solar cells, and(c) an output stage configured to alter a voltage output of the second local power point optimizer;wherein the first group of serially-connected solar cells and the first local power point optimizer and the second group of serially-connected solar cells and the second local power point optimizer in are connected in electrical series.3. The solar cell installation of further comprising:a third group of serially-connected solar cells having a third positive terminal and a third negative terminal; anda third local power point optimizer coupled to the third positive terminal and the third negative terminal, the third local power point optimizer including:(a) a ...

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Номер записи: 83

14-02-2019 дата публикации

INTELLIGENT SOLAR CELL CARRIER SYSTEM FOR FLIGHT AND LABORATORY MEASUREMENT APPLICATIONS

Номер: US20190052225A1

Автор: LEE Justin H., MANN Colin J., NOCERINO John C., Walker Don

Принадлежит:

An apparatus for carrying, retrieving, and characterizing temperature and current-voltage properties of a solar cell may include a metal core printed circuit board (PCB). The metal core PCB includes current-voltage and temperature measurement electronics operated by a remote device via a communication unit. The solar cell is embedded onto the metal core PCB by way of a thermally- and electrically-conducting adhesive material. The current-voltage and temperature electronics and the solar cell are thermally connected to the PCB, and are electrically isolated from each other, while residing on the same plane. 1. An apparatus , comprising:a metal core printed circuit board (PCB) configured to provide temperature measurements of one or more solar cells, whereinthe metal core PCB comprises a plurality of layers formed on top of a substrate, the plurality of substrates comprises at least two dielectric layers and at least two copper layers; anda temperature sensor and the one or more solar cells are placed on top of one of the at least two copper layers, such that the temperature sensor and the one or more solar cells are electrically isolated from each other.2. The apparatus of claim 1 , wherein the substrate comprises of an aluminum substrate or a copper substrate.3. The apparatus of claim 1 , wherein the at least two dielectric layers are thermally conductive and electrically insulated layers.4. The apparatus of claim 1 , whereinone of the at least two copper layers are situated between the at least two dielectric layers, andanother one of the at least two copper layers are placed on top of one of the top dielectric layers.5. The apparatus of claim 1 , further comprising:an adhesive-less bond attaching the one or more solar cells to the one of the at least two copper layers, improving electrical isolation and thermal conductivity between the temperature sensor and the one or more solar cells.6. An apparatus for carrying claim 1 , retrieving claim 1 , and characterizing ...

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Номер записи: 84

23-02-2017 дата публикации

SOLAR DEVICE DIAGNOSIS METHOD

Номер: US20170054411A1

Автор: CHEN Kun-Hong

Принадлежит:

A solar device diagnosis method is disclosed in the present invention and the method is to compare the data in the same one solar device at different time periods, the data in different solar devices at the same time period, and the data of the solar device with the average of the data of the multiple solar devices so as to determine the problem of the solar device. By the aforementioned diagnosis method, the data of the solar devices can be compared in many different aspects to determine whether the solar device is abnormal or not and the power generation efficiency of the solar device is enhanced. 1. A solar device diagnosis method , comprising steps of:detecting at least one first data of at least one solar device at a first time period;detecting at least one second data of the at least one solar device at a second time period;calculating at least one first comparison value between the at least one first data and the at least one second data; andtransmitting a first warning message when an absolute value of the at least one first comparison value is greater than a first error tolerance value;wherein the at least one first data and the at least one second data are data with a same unit.2. The solar device diagnosis method as claimed in claim 1 , further comprising steps of:detecting at least one third data of the at least one solar device at a third time period;detecting at least one fourth data of the at least one solar device at a fourth time period;calculating at least one second comparison value between the at least one third data and the at least one fourth data; andtransmitting a second warning message when an absolute value of the at least one second comparison value is greater than a second error tolerance value;wherein the at least one third data and the at least one fourth data are data with a same unit.3. The solar device diagnosis method as claimed in claim 1 , wherein in the step of transmitting the first warning message when the absolute value of the ...

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Номер записи: 85

10-03-2022 дата публикации

CAPACITY ESTIMATOR FOR AN ENERGY GENERATION AND/OR STORAGE SYSTEM

Номер: US20220077682A1

Автор: BANSAL Ashish, Chandran Sandeep, Goel Rishabh, Gupta Ankit Prakash, Kothandaraman Badrinarayanan, Mattathil Joseph Samuel, Pallam Ayyapu Reddy, Rosen Jan Spencer, Saraogi Sumit, Somani Jayant

Принадлежит:

A method and apparatus for estimating capacity of a system including an energy generation system, an energy storage system or both. The method and apparatus initially estimate the system capacity based on a facility location and size. The initial estimate may be adjusted through adjustment of at least one parameter. An updated capacity estimate is generated and displayed. 1. A computing device comprising one or more processors coupled to one or more non-transitory computer readable media storing instructions that , when executed by the one or more processors , causes the computing device to display upon a display device a graphical user interface for entering and displaying information regarding estimating capacity of a system including an energy generation system , an energy storage system or both comprising:a field containing an indicium of a location of a facility for installation of the system;a field containing an indicium of facility size;a field for displaying an initial estimate of capacity of the system based, at least in part, upon the indicium of location and the indicium of facility size;{'claim-text': ['a facility size;', 'an amount of daily energy consumed by a facility to be powered by the system;', 'a duration of a backup to be supplied by the energy storage system; or', 'an initial estimate of capacity of solar energy generation, capacity of energy storage or both; and'], '#text': 'a control element enabling a user to adjust at least one parameter comprising at least one of:'}a field for displaying an updated estimate of capacity of the system based, at least in part, upon the adjusted at least one parameter.2. The computing device of claim 1 , wherein the at least one parameter further comprises at least one field representing a plurality of loads that are to be powered by the energy storage system.3. The computing device of claim 2 , the graphical user interface further comprises a graphical switch to select or deselect each load in the plurality ...

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Номер записи: 86

10-03-2022 дата публикации

Systems and Methods for an Enhanced Watchdog in Solar Module Installations

Номер: US20220077819A1

Автор: Arditi Shmuel, Hadar Ron

Принадлежит:

Systems and methods for automatically or remotely rendering a solar array safe during an emergency or maintenance. A watchdog unit is disclosed for monitoring a signal from a central controller. If the signal is lost, interrupted, or becomes irregular, or if a shutdown signal is received, then the watchdog unit can shut down one or more solar modules. Shutting down a solar module can mean disconnecting it from a power bus of the solar array or lowering the solar module voltage to a safe level. 1. A system comprising: a local controller configured to monitor a power line communication from a central controller and determine whether the power line communication has been interrupted for a period longer than a predetermined time or number of allowed skips; and', 'at least one component configured to disconnect the solar module from the power bus in response to a determination by the local controller that the power line communication from the central controller has been interrupted for a period longer than the predetermined time or number of allowed skips;, 'a watchdog unit coupled between a solar module and a power bus, the power bus configured to connect a plurality of solar modules to an inverter, the watchdog unit havingwherein the watchdog unit is configured to connect the solar module to the power bus when the power line communication is not interrupted.2. The system of claim 1 , further comprising a junction box housing the watchdog unit claim 1 , the junction box to provide connectivity between the solar module and the power bus.3. The system of claim 2 , wherein the local controller is configured to control a duty cycle of the at least one component to control an output voltage from the junction box.4. The system of claim 3 , wherein the local controller is configured to operate using power from the solar module.5. The system of claim 1 , further comprising a bypass circuit configured to enable current in the power bus to bypass the solar module when the at ...

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Номер записи: 87

10-03-2022 дата публикации

METHOD AND SYSTEM FOR SOAR PHOTOVOLTAIC POWER STATION MONITORING

Номер: US20220077820A1

Автор: JEONG WOO CHUL

Принадлежит:

Disclosed are a method and a system for solar photovoltaic power station and the system includes: an unmanned aerial vehicle flying over the sky of a plurality of solar photovoltaic panels included in a solar photovoltaic power station and obtaining and providing a monitoring image by photographing the solar photovoltaic panel; and a computing device correcting the monitoring image and obtaining the corrected monitoring image, and executing a solar photovoltaic power station monitoring application of performing a malfunction area inspection process for the solar photovoltaic panel based on the obtained corrected monitoring image. 1. A system for solar photovoltaic power station monitoring , the system comprising:an unmanned aerial vehicle flying over the sky of a plurality of solar photovoltaic panels included in a solar photovoltaic power station and obtaining and providing a monitoring image by photographing the solar photovoltaic panel; anda computing device correcting the monitoring image and obtaining the corrected monitoring image, and executing a solar photovoltaic power station monitoring application of performing a malfunction area inspection process for the solar photovoltaic panel based on the obtained corrected monitoring image.2. The system of claim 1 , wherein the application obtains a satellite photograph acquired by photographing the solar photovoltaic power station in an artificial satellite based on location information of the solar photovoltaic power station claim 1 , detects a solar photovoltaic panel area in the obtained satellite photograph claim 1 , identifies at least one individual panel area in the detected solar photovoltaic panel area claim 1 , and maps an identification code specifying each identified individual panel area to build a satellite photograph based database.3. The system of claim 2 , wherein the application sets an autonomous flight path of the unmanned aerial vehicle based on the identification code mapped to the satellite ...

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Номер записи: 88

20-02-2020 дата публикации

Electrical Supply System

Номер: US20200059086A1

Автор: Dale John Butler

Принадлежит: Elevare Energy Ip Pty Ltd

An electrical supply system including a voltage converter including having an input electrically coupled to a supply for receiving a supply signal and an output for supplying an output signal having a output voltage different to a supply voltage of the supply signal. The system includes a diode including a diode input electrically coupled to the voltage converter output, a bus electrically coupled to a diode output and at least one of a load and a store, a voltage sensor for detecting the output voltage, a current sensor for detecting a diode input current and an electronic processing device coupled to the sensors for monitoring the diode input current and the output voltage and detecting a fault in the electrical supply system based on at least the diode input current and output voltage.

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Номер записи: 89

01-03-2018 дата публикации

Method For Optimizing Efficiency Of Optical Semiconductor Devices

Номер: US20180062391A1

Автор: Abonyi Istvan

Принадлежит:

A method to subsequently increase efficiency of optical semiconductor devices is provided. The method comprises interrupting voltage of a light-emitting optical semiconductor device with a short duty cycle, the interrupting cycle in a range of 1%-5%. The method also comprises observing cool down of the optical semiconductor device to a greater extent than without the interruption and observing a resulting lower ambient temperature of the optical semiconductor device. The optical semiconductor devices convert light into electrical energy and experience, based on the interruption, greater increases in efficiency and lifetime than without the interruption. The optical semiconductor devices comprise at least one of comprising light-emitting optical semiconductor devices and light-absorbing optical semiconductor devices. 2. The method of claim 1 , wherein the optical semiconductor devices further comprise one of light-emitting devices and high capacity LEDs.3. The method of claim 2 , wherein luminescent material of light-emitting optical semiconductor devices (LEDs) is illuminated by means of excited light for a certain period claim 2 , and not continuously claim 2 , and the excitation is followed by a certain break to promote utilization of the maximum persistence energy claim 2 , and wherein the switching frequency is specified so as to result in maximum light output during the excitation time of the luminescent material.4. The method of claim 2 , wherein with light-emitting optical semiconductor devices (LEDs) a circuit subsequently increasing efficiency of the LEDs is similar to drive of pulse laser diodes in which the circuit is switched on only for 1%-5% of the time and is interrupted during the remainder of the time and wherein the energy accumulated in condenser C is discharged to the pulse laser diode for the duration of the short pulse claim 2 , in contrast to light-emitting optical semiconductor devices (LEDs) of wherein the circuit is switched off for 1%-5% ...

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Номер записи: 90

02-03-2017 дата публикации

Photoelectric conversion device

Номер: US20170062748A1

Автор: Atsuko llDA, Hideyuki Nakao, Hyangmi JUNG, Kenji Todori, Shigehiko Mori, Takeshi Gotanda

Принадлежит: Toshiba Corp

A photoelectric conversion device includes: an element substrate having a first electrode, a photoelectric conversion layer, and a second electrode, the photoelectric conversion layer being provided above the first electrode and performing charge separation by energy of irradiated light, and the second electrode being provided above the photoelectric conversion layer; a counter substrate facing the element substrate; and a sealing layer provided between the element substrate and the counter substrate. The element substrate, the counter substrate, and the sealing layer define a sealing region sealing the photoelectric conversion layer. The element substrate further has: an impurity detection layer in contact with the second electrode inside the sealing region and causing chemical reaction with an impurity containing at least one of oxygen and water; and a third electrode in contact with the impurity detection layer and extending to the outside of the sealing region.

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Номер записи: 91

02-03-2017 дата публикации

PHOTOVOLTAIC SYSTEM HAVING FAULT DIAGNOSIS APPARATUS, AND FAULT DIAGNOSIS METHOD FOR PHOTOVOLTAIC SYSTEM

Номер: US20170063304A1

Автор: HWANG Hyemi, JU Youngchul, JUNG Youngseok, KANG Gi-Hwan, KO Sukwhan, SO Junghun, SONG Hee-eun

Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

The present invention relates to a fault diagnosis for a photovoltaic system. A fault diagnosis apparatus includes a temperature sensor unit measuring both an internal temperature value of the junction box and a surface temperature value of the solar module; a voltage sensor provided in the junction box; and an operation unit determining where a fault occurs among the solar module, an inside of the junction box, and the inverter by comparing measured values of the temperature sensor unit with a measured value of the voltage sensor. According to the present invention, initial investment cost is inexpensive. In addition, it is possible to detect solar module faults that are difficult to be checked by the naked eye. 1. A fault diagnosis apparatus of a photovoltaic system , the photovoltaic system including: a solar module including a plurality of solar cells arranged in a grid; a junction box connected to the solar module to output direct current power generated by the solar module; an inverter converting the direct current power generated by the solar module into alternating current power required for an electric load; and a server communication unit communicating with the solar module ,the fault diagnosis apparatus comprising:a temperature sensor unit measuring both an internal temperature value of the junction box and a surface temperature value of the solar module;a voltage sensor provided in the junction box; andan operation unit determining where a fault occurs among the solar module, an inside of the junction box, and the inverter by comparing measured values of the temperature sensor unit with a measured value of the voltage sensor.2. The apparatus of claim 1 , wherein the temperature sensor unit comprises:a surface temperature sensor measuring the surface temperature value of the solar module;an internal temperature sensor measuring the internal temperature value of the junction box;a temperature value signal generating unit generating a temperature value ...

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Номер записи: 92

22-05-2014 дата публикации

Systems and methods of discriminating dc arcs and load switching noise

Номер: US20140142873A1

Автор: Jianhong Kang, Keith W. Kawate

Принадлежит: Sensata Technologies Massachusetts Inc

Systems and methods of detecting arcing in DC power systems that can differentiate between DC arcs and load-switching noise. The systems and methods can determine, within a plurality of predetermined time intervals, at least the pulse count (PC) per predetermined time interval, and the pulse duration (PD) per predetermined time interval, in which the PC and the PD can correspond to the number and the intensity of potential arcing events in a DC power system, respectively. The systems and methods can process the PC and PD using one or more arc fault detection algorithms, thereby differentiating between DC arcs and load-switching noise with increased reliability.

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Номер записи: 93

17-03-2022 дата публикации

Method for optimizing the electric conduction through a metal/oxide/metal interface

Номер: US20220085233A1

Автор: Brice Arrazat, Sylvain De Vecchi

Принадлежит: GARMIN SWITZERLAND GMBH

A method for optimizing the electrical performance of all or part of a photovoltaic module (11) through breakdown at the metal/oxide/metal interface. The method may include: —Step 1: Illuminating all or part of said photovoltaic module with a luminous flux controlled by a control module (14); —Step 2: Reverse-biasing said photovoltaic module: by subjecting it to a voltage sweep ranging from −Voc/2, Voc being the open-circuit voltage, to a limit bias voltage VL whose value depends on the mode of interconnection and on the number (NB) of cells forming all or part of said photovoltaic module.

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Номер записи: 94

29-05-2014 дата публикации

Resistance component extraction for back contact back junction solar cells

Номер: US20140147944A1

Автор: Mehrdad M. Moslehi, Pawan Kapur, Swaroop Kommera

Принадлежит: Solexel Inc

Methods and structures for extracting at least one electric parametric value from a back contact solar cell having dual level metallization are provided.

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Номер записи: 95

17-03-2022 дата публикации

CAPACITY ESTIMATOR FOR AN ENERGY GENERATION AND/OR STORAGE SYSTEM

Номер: US20220085606A1

Автор: BANSAL Ashish, Chandran Sandeep, Goel Rishabh, Gupta Ankit Prakash, Kothandaraman Badrinarayanan, Mattathil Joseph Samuel, Pallam Ayyapu Reddy, Rosen Jan Spencer, Saraogi Sumit, Somani Jayant

Принадлежит:

A method and apparatus for estimating capacity of a system including an energy generation system, an energy storage system or both. The method and apparatus initially estimate the system capacity based on a facility location and size. The initial estimate may be adjusted through adjustment of at least one parameter. An updated capacity estimate is generated and displayed. 1. Apparatus for estimating capacity of a system including an energy generation system , an energy storage system or both comprising: receiving indicium of a location of a facility for installation of the system;', 'receiving indicium of facility size of the facility;', 'determining an initial estimate of capacity of the system based, at least in part, upon the indicium of location and the indicium of facility size;', 'enabling a user to adjust at least one parameter comprising at least one of:', 'a facility size;', 'an amount of energy consumed by the facility;', 'a duration of a backup to be supplied by the energy storage system; or', 'an initial estimate of capacity of solar energy generation, capacity of energy storage, or both; and, 'one or more processors coupled to one or more non-transitory computer readable media storing instructions thereon which, when executed by the one or more processors, cause the one or more processors to perform operations comprisingdetermining an updated estimate of capacity of the system based, at least in part, upon the adjusted at least one parameter.2. The apparatus of claim 1 , wherein the receiving of indicium of facility size further comprises estimating the facility size based on the location.3. The apparatus of claim 1 , wherein enabling further comprises displaying at least one control element that is configured to be manipulated to adjust the at least one parameter.4. The apparatus of claim 1 , wherein the at least one parameter further comprises a plurality of loads that are to be powered by the energy storage system.5. The apparatus of claim 4 , ...

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Номер записи: 96

08-03-2018 дата публикации

Electrical inspection method for solar cells

Номер: US20180069506A1

Автор: Chun-Yi Chen, Hwen-Fen Hong, Yueh-Mu Lee, Zun-Hao Shih

Принадлежит: Institute of Nuclear Energy Research

The present invention discloses an electrical inspection method for solar cells, comprising steps of supplying a voltage and a current to a solar cell for stimulating the solar cell and giving a ray of light; filtering the light to give a ray of light having a predetermined wavelength; and measuring an optical power value of the light having a predetermined wavelength. The electrical inspection method adopts a low-cost apparatus to replace the solar simulators according to the prior art. In addition to saving costly equipment, filter adjustment, and the maintenance fee for replacing lamps, the defect inspection flow for solar cells can be further integrated and hence improving the efficiency.

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Номер записи: 97

09-03-2017 дата публикации

Solar Cell Characterization System With an Automated Continuous Neutral Density Filter

Номер: US20170070190A1

Автор: Gunawan Oki, Lei Bao

Принадлежит:

Techniques for solar cell electrical characterization are provided. In one aspect, a solar testing device is provided. The device includes a solar simulator; and a continuous neutral density filter in front of the solar simulator having regions of varying light attenuation levels ranging from transparent to opaque, the continuous neutral density filter having an area sufficiently large to filter all light generated by the solar simulator, and wherein a position of the continuous neutral density filter relative to the solar simulator is variable so as to control a light intensity produced by the device. A solar cell electrical characterization system and a method for performing a solar cell electrical characterization are also provided. 1. An apparatus for performing a solar cell electrical characterization , the apparatus comprising:a memory; and open a shutter of a solar simulator to cause light to be emitted from the solar simulator, the solar simulator being part of a solar cell characterization system having the solar simulator and a continuous neutral density filter having regions of varying light attenuation levels ranging from transparent to opaque, wherein the continuous neutral density filter is located between the solar simulator and a solar cell under test;', 'position a transparent region of the continuous neutral density filter having no light attenuation between the solar simulator and the solar cell under test;', 'obtain light J-V data from the solar cell under test;', 'move the continuous neutral density filter to position a region of higher light attenuation between the solar simulator and the solar cell under test;', 'obtain Jsc-Voc data from the solar cell under test;', 'close the shutter to prevent light from being emitted from the solar simulator;', 'obtain dark J-V data from the solar cell under test;', 'open the shutter to cause light to be emitted from the solar simulator;', 'move the continuous neutral density filter to position a plurality ...

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Номер записи: 98

09-03-2017 дата публикации

Solar Cell Characterization System With an Automated Continuous Neutral Density Filter

Номер: US20170070191A1

Автор: Gunawan Oki, Lei Bao

Принадлежит:

Techniques for solar cell electrical characterization are provided. In one aspect, a solar testing device is provided. The device includes a solar simulator; and a continuous neutral density filter in front of the solar simulator having regions of varying light attenuation levels ranging from transparent to opaque, the continuous neutral density filter having an area sufficiently large to filter all light generated by the solar simulator, and wherein a position of the continuous neutral density filter relative to the solar simulator is variable so as to control a light intensity produced by the device. A solar cell electrical characterization system and a method for performing a solar cell electrical characterization are also provided. 1. A solar testing device , comprising:a solar simulator; anda continuous neutral density filter in front of the solar simulator having regions of varying light attenuation levels ranging from transparent to opaque, the continuous neutral density filter having a linear shape, and wherein a position of the continuous neutral density filter relative to the solar simulator is variable so as to control a light intensity produced by the device.2. The device of claim 1 , wherein the solar simulator contains a light source which comprises a xenon claim 1 , halogen or LED lamp.3. The device of claim 1 , wherein the continuous neutral density filter has an area sufficiently large to filter all light generated by the solar simulator.4. The device of claim 1 , wherein the continuous neutral density filter has an area of from about 300 cmto about 1 claim 1 ,875 cm.5. The device of claim 1 , further comprising a frame to which the continuous neutral density filter is mounted.6. The device of claim 5 , wherein the continuous neutral density filter is mounted to the frame with an adhesive.7. The device of claim 1 , further comprising a motor configured to change the position of the continuous neutral density filter relative to the solar simulator.8. ...

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Номер записи: 99

27-02-2020 дата публикации

Active Bypass Control Device and Method for Photovoltaic Module

Номер: US20200067452A1

Автор: Ni Hua, YANG Zongjun, YU Yanfei

Принадлежит: SUNGROW POWER SUPPLY CO., LTD.

An active bypass control device and an active bypass control method for a photovoltaic module are provided. The device includes a power source, a sampling unit, a controller, N first driving circuits, and N first controllable switches. Each first controllable switch is connected between one pair of bypass ports and includes a first switch and a first diode that are antiparallel. The first diode is reversely connected between the pair of bypass ports, and a control end of the first switch is connected to the controller via the corresponding first driving circuit. Based on a sampling signal provided by the sampling unit, the controller determines whether analog quantity information of the first controllable switch meets a predetermined bypass condition. If the predetermined bypass condition is met, the first switch is controlled to be turned on by using the first driving circuit. 1. An active bypass control device for a photovoltaic module , the active bypass control device comprising:a power source;a sampling unit;a controller;N first driving circuits; andN first controllable switches, whereinN is a positive integer;an output end of the power source is connected to a power supply end of the controller;an output end of the sampling unit is connected to an input end of the controller;each of the N first controllable switches is connected between one of N pairs of bypass ports corresponding to the first controllable switch, and the first controllable switch comprises a first switch and a first diode that are antiparallel, the first diode is reversely connected between the pair of bypass ports, and a control end of the first switch is connected to one output end of the controller via one of the N first driving circuits corresponding to the first controllable switch;the sampling unit is configured to: detect, for each first controllable switch, analog quantity information of the first controllable switch, and output a sampling signal based on the analog quantity ...

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Номер записи: 100