公开(公告)号：US20210288503A9

公开(公告)日：2021-09-16

申请号：US15593761

申请日：2017-05-12

申请人： Solaredge Technologies Ltd.

发明人： Ilan Yoscovich ,  Tzachi Glovinsky ,  Ofir Bieber

IPC分类号： H02J3/38 ,  H02J3/46 ,  H02S40/32 ,  H02S50/10

摘要： Various implementations described herein are directed to employing photovoltaic strings including a photovoltaic power device with a specialized wiring configuration, which enables high string efficiency without incurring excessive wiring costs. Implementations may include a cable built into photovoltaic generators that carry one portion of the current, and other portions of the current may be carried by direct-current (DC) or alternating-current (AC) cables bypassing the photovoltaic generators.

公开(公告)号：US20210211095A1

公开(公告)日：2021-07-08

申请号：US16075581

申请日：2018-07-05

申请人： MiaSole Equipment Integration (Fujian) Co., Ltd.

发明人： Yongyuan XU ,  Pengchen HU ,  Shan YI ,  Jihong XIAO ,  Xianyi HUANG ,  Erfeng PAN ,  Wenjun MA ,  Libing LIU

IPC分类号： H02S50/10

摘要： The present disclosure discloses a reliability test device for flexible photovoltaic module, this reliability test device for flexible photovoltaic module comprises: an environment test box, a temperature acquisition means and a placing rack placed inside an environment test box; the placing rack comprises at least one set of oppositely provided vertical frames, and a plurality of carriers horizontally stacked between the vertical frames, the carriers and the vertical frames are fixedly connected; a first gap is provided between the carriers, and a plurality of gas holes are provided on the carriers; the flexible photovoltaic module is horizontally placed on the carrier, and the temperature acquisition means is fixedly provided on a surface of the flexible photovoltaic module. In the present disclosure, problems of undesirable structures such as deformation and creeping of the module caused by vertically placing the module are eliminated, meanwhile in preferred solutions, by providing a baffle, the gas circulation flow direction in the test box is changed, such that the module maintains a uniform temperature and a uniform humidity during heating up and cooling down, and accordingly accurate and effective reliability evaluation results can be obtained.

公开(公告)号：US11038072B2

公开(公告)日：2021-06-15

申请号：US16020241

申请日：2018-06-27

申请人： SUNPOWER CORPORATION

发明人： Ratson Morad ,  Gilad Almogy ,  Itai Suez ,  Jean Hummel ,  Nathan Beckett ,  Yafu Lin ,  John Gannon ,  Michael J. Starkey ,  Robert Stuart ,  Tamir Lance ,  Dan Maydan

IPC分类号： H01L31/044 ,  H01L31/18 ,  H01L31/05 ,  H01L31/02 ,  H01L31/0352 ,  H01L31/042 ,  H01L31/048 ,  H01L31/0747 ,  H02S40/32 ,  H02S40/34 ,  H01L31/0203 ,  H01L31/043 ,  H01L31/0224 ,  H01L27/142 ,  H01L31/049 ,  H01L31/068 ,  H02S30/00 ,  H02S40/30 ,  H02S30/10 ,  H02S20/25 ,  H02S40/36 ,  H02S50/00 ,  H02S50/10

摘要： A high efficiency configuration for a solar cell module comprises solar cells conductively bonded to each other in a shingled manner to form super cells, which may be arranged to efficiently use the area of the solar module, reduce series resistance, and increase module efficiency.

公开(公告)号：US10996284B2

公开(公告)日：2021-05-04

申请号：US16233440

申请日：2018-12-27

申请人： Huawei Technologies Co., Ltd.

发明人： Shengjie Zhang ,  Jintao Han

IPC分类号： G01R31/50 ,  H02M3/155 ,  G01R35/00 ,  H02M3/10 ,  G01R31/28 ,  G01R31/14 ,  G01R31/327 ,  H03B29/00 ,  H02S40/30 ,  H02S50/10 ,  H02H1/00 ,  H02H3/16

摘要： This application provides a noise generation circuit, a self-checking circuit, an AFCI, and a photovoltaic power generation system. The noise generation circuit includes a power switch module, a noise generator, and a capacitor, where the noise generator is connected to both the power switch module and the capacitor; the power switch module is configured to control, according to a self-checking instruction, whether the noise generator generates a noise signal; and the capacitor is configured to filter out a direct current component in the noise signal when the noise generator generates the noise signal. According to the noise generation circuit, the self-checking circuit, the AFCI, and the photovoltaic power generation system that are provided in this application, no noise signal is generated in a non self-checking time, thereby ensuring normal working of the AFCI and the photovoltaic inverter.

公开(公告)号：US10992257B2

公开(公告)日：2021-04-27

申请号：US15461295

申请日：2017-03-16

申请人： SolarCity Corporation

发明人： Sandeep Narla

IPC分类号： H02S50/10 ,  G01R1/00 ,  H02S10/00

摘要： A method of monitoring state of health for an energy generation system includes receiving a measurement of a parameter of an electrical component in the PV energy generation system at an instance in time, referencing a look-up table containing several values of the parameter representing an expected degradation trend across a progression of time for the electrical component, comparing the measurement to an expected value of the expected degradation trend for a period of time corresponding to the instance in time, and initiating a preventative measure based upon the comparison between the measurement and the expected value of the expected degradation trend.

公开(公告)号：US10985696B2

公开(公告)日：2021-04-20

申请号：US16121197

申请日：2018-09-04

申请人： Huawei Technologies Co., Ltd.

发明人： Guangping Yang ,  Yongbing Gao

IPC分类号： H02S50/10 ,  G01R19/25

摘要： A method, an apparatus, and a device for identifying a cell string fault in an optoelectronic system, where the method includes obtaining at least two groups of current-voltage (I-V) values of a first cell string in the optoelectronic system, performing fitting processing according to the at least two groups of I-V values using a predetermined physical string model to obtain at least one characteristic parameter of the first cell string, and comparing the at least one characteristic parameter with a pre-obtained standard characteristic parameter to determine whether the first cell string is faulty, or performing curve fitting processing on collected data using the physical string model. Therefore, identifying the cell string fault in the optoelectronic system is not affected by inconsistency of environments, and processing efficiency and accuracy of string fault identification are effectively improved.

公开(公告)号：US20210091718A1

公开(公告)日：2021-03-25

申请号：US17028754

申请日：2020-09-22

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

发明人： Eun Yeong LEE ,  Mi Yeon SONG ,  Young Chan KIM ,  Sung Geun PARK ,  Sang Hak KIM

IPC分类号： H02S50/10 ,  H01M10/46 ,  H01M10/48 ,  H02S40/38

摘要： A method of diagnosing malfunctioning of a bypass diode in a solar photovoltaic battery system is provided. The method may include: collecting solar photovoltaic battery operation information indicating a solar photovoltaic battery operation state, from a signal of a solar photovoltaic battery detection unit, while maximum power point tracking control is performed with the solar photovoltaic battery system in operation; and determining whether or not the bypass diodes based on the collected solar photovoltaic battery operation information.

公开(公告)号：US10958060B2

公开(公告)日：2021-03-23

申请号：US15780113

申请日：2016-12-01

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  SOCOMEC

发明人： Nicolas Chaintreuil ,  Stéphane Siat ,  Christian Kern

IPC分类号： H02H1/00 ,  H02S50/10 ,  G01R19/165 ,  H02S50/00 ,  H02H7/20

摘要： The photovoltaic installation being intended to supply an electric current (i), the method comprises the steps of measuring (e0) values representative of the electric current (i) supplied by the photovoltaic installation; adjusting (e2) a variable current jump threshold (s(ti)) according to measured values; detecting (e3) a current jump with an amplitude greater than a current jump threshold adjusted according to values measured before the jump; and detecting (e5) an electric arc based on the detection of a current jump.

公开(公告)号：US20210050816A1

公开(公告)日：2021-02-18

申请号：US17088023

申请日：2020-11-03

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Xun MA ,  Guilei GU ,  Wei SHUI

IPC分类号： H02S50/10 ,  H02S40/32

摘要： 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.

公开(公告)号：US10910994B2

公开(公告)日：2021-02-02

申请号：US16166727

申请日：2018-10-22

申请人： Commissariat a l'energie atomique et aux energies alternatives

发明人： Duy Long Ha ,  Franck Al Shakarchi

IPC分类号： H02S50/10 ,  H01L31/044

摘要： A method for detecting a fault in a photovoltaic module includes determining a matrix of temperatures of the photovoltaic module, the matrix being obtained after dividing the module into a plurality of thermal zones and assigning a temperature to each thermal zone; detecting at least one hot thermal zone from among the plurality of zones of the module; determining a surface area ratio between the surface area of the detected hot thermal zone and the total surface area of the module; performing a first comparison of the surface area ratio with a coefficient dependent on the number of bypass diodes present in the module; and determining the type of fault from the result obtained in said first comparison.