公开(公告)号：US11489330B2

公开(公告)日：2022-11-01

申请号：US17344436

申请日：2021-06-10

Applicant: Solaredge Technologies Ltd.

Inventor： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest ,  Yakir Loewenstern ,  Tzachi Glovinsky ,  Nadav Berkovitch ,  Ron Neuman ,  Amir Fishelov

IPC: H02J3/38 ,  H02H7/20 ,  H02S50/10 ,  H02H1/00 ,  H02S50/00

Abstract: Methods for arc detection in a system including one or more photovoltaic generators, one or more photovoltaic power devices and a system power device and/or a load connectible to the photovoltaic generators and/or the photovoltaic power devices. The methods may measure voltage, current, and/or power delivered to the load or system power device, and the methods may measure voltage noise or current noise within the photovoltaic system. The methods may periodically, and/or in response to detecting noise, reduce an electrical parameter such as current or voltage in order to extinguish an arc. The methods may compare one or more measurements to one or more thresholds to detect arcing, and upon a comparison indicating that arcing is or was present, an alarm condition may be set.

公开(公告)号：US20210288610A1

公开(公告)日：2021-09-16

申请号：US17154150

申请日：2021-01-21

Applicant: Solaredge Technologies Ltd.

Inventor： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest

IPC: H02S50/00 ,  G01R31/12 ,  H01L31/02 ,  H02H7/20 ,  H02H1/00

Abstract: A method for arc detection in a system including a photovoltaic panel and a load connectible to the photovoltaic panel with a DC power line. The method measures power delivered to the load thereby producing a first measurement result of the power delivered to the load. Power produced by the photovoltaic panel is also measured, thereby producing a second measurement result of power produced by the photovoltaic panel. The first measurement result is compared with the second measurement result thereby producing a differential power measurement result. Upon the differential power measurement result being more than a threshold value, an alarm condition may also be set. The second measurement result may be modulated and transmitted over the DC power line.

公开(公告)号：US20210075313A1

公开(公告)日：2021-03-11

申请号：US17017998

申请日：2020-09-11

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Ilan Yoscovich ,  Tzachi Glovinsky

IPC: H02M1/32 ,  H02M7/44 ,  H02S40/36 ,  H02H7/20 ,  H02M7/06 ,  H02M7/49 ,  H02S10/00

Abstract: A method for a power system having a string of a plurality of power sources connected across a power device includes connecting a plurality of safe voltage units having safety switches connected respectively across each of the power sources. The method includes sensing a plurality of parameters of the power sources, and monitoring for a signal transmitted from the power device. Each of the safety switches is activated to be OFF responsive to detecting the signal within a predetermined time period. Upon not detecting the signal from the power device within the predetermined time period, a safe mode of operation of the power system is entered in which the voltages of each of the power sources is reduced to a voltage level less than a predetermined voltage level by turning the safety switches ON.

公开(公告)号：US10819104B2

公开(公告)日：2020-10-27

申请号：US15998858

申请日：2018-08-17

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Ilan Yoscovich ,  Tzachi Glovinsky

IPC: H02H7/20 ,  H02M7/06 ,  H02M7/49 ,  H02S10/00 ,  H02S40/36 ,  H02J7/00 ,  H02M7/5387 ,  H02J3/38 ,  H02M3/158 ,  H02J1/08

Abstract: A method for a power system having a string of a plurality of power sources connected across a power device includes connecting a plurality of safe voltage units having safety switches connected respectively across each of the power sources. The method includes sensing a plurality of parameters of the power sources, and monitoring for a signal transmitted from the power device. Each of the safety switches is activated to be OFF responsive to detecting the signal within a predetermined time period. Upon not detecting the signal from the power device within the predetermined time period, a safe mode of operation of the power system is entered in which the voltages of each of the power sources is reduced to a voltage level less than a predetermined voltage level by turning the safety switches ON.

公开(公告)号：US10673229B2

公开(公告)日：2020-06-02

申请号：US15819903

申请日：2017-11-21

Applicant: Solaredge Technologies Ltd.

Inventor： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest ,  Yakir Loewenstern ,  Tzachi Glovinsky ,  Nadav Berkovitch ,  Ron Neuman ,  Amir Fishelov

IPC: H02H7/20 ,  H02J3/38 ,  H02S50/10 ,  H02H1/00 ,  H02S50/00

Abstract: Methods for arc detection in a system including one or more photovoltaic generators, one or more photovoltaic power devices and a system power device and/or a load connectible to the photovoltaic generators and/or the photovoltaic power devices. The methods may measure voltage, current, and/or power delivered to the load or system power device, and the methods may measure voltage noise or current noise within the photovoltaic system. The methods may periodically, and/or in response to detecting noise, reduce an electrical parameter such as current or voltage in order to extinguish an arc. The methods may compare one or more measurements to one or more thresholds to detect arcing, and upon a comparison indicating that arcing is or was present, an alarm condition may be set.

公开(公告)号：US10230310B2

公开(公告)日：2019-03-12

申请号：US15250068

申请日：2016-08-29

Applicant: Solaredge Technologies Ltd.

Inventor： Yakir Loewenstern ,  Ilan Yoscovich ,  David Braginsky ,  Tzachi Glovinsky ,  Izak Assia

IPC: H02J1/00 ,  H02J3/00 ,  H02M7/48 ,  H02M3/145 ,  H02S50/10 ,  H02S40/30 ,  H02S40/36 ,  H02H7/20 ,  H02H3/08

Abstract: Various implementations described herein are directed to a methods and apparatuses for disconnecting, by a device, elements at certain parts of an electrical system. The method may include measuring operational parameters at certain locations within the system and/or receiving messages from control devices indicating a potentially unsafe condition, disconnecting and/or short-circuiting system elements in response, and reconnection the system elements when it is safe to do so. Certain embodiments relate to methods and apparatuses for providing operational power to safety switches during different modes of system operation.

公开(公告)号：US20240258966A1

公开(公告)日：2024-08-01

申请号：US18636114

申请日：2024-04-15

Applicant: Solaredge Technologies Ltd.

Inventor： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest

IPC: H02S50/00 ,  G01R31/12 ,  H01L31/02 ,  H02H1/00 ,  H02H7/20

CPC classification number: H02S50/00 ,  G01R31/1227 ,  H01L31/02021 ,  H02H1/0015 ,  H02H7/20 ,  Y02E10/50

Abstract: A method for arc detection in a system including a photovoltaic panel and a load connectible to the photovoltaic panel with a DC power line. The method measures power delivered to the load thereby producing a first measurement result of the power delivered to the load. Power produced by the photovoltaic panel is also measured, thereby producing a second measurement result of power produced by the photovoltaic panel. The first measurement result is compared with the second measurement result thereby producing a differential power measurement result. Upon the differential power measurement result being more than a threshold value, an alarm condition may also be set. The second measurement result may be modulated and transmitted over the DC power line.

公开(公告)号：US20240243696A1

公开(公告)日：2024-07-18

申请号：US18408756

申请日：2024-01-10

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Gil Litmanovitch

IPC: H02S50/10 ,  G01R31/11 ,  G01R31/52 ,  H02H1/00

CPC classification number: H02S50/10 ,  G01R31/11 ,  G01R31/52 ,  H02H1/0015

Abstract: Systems, apparatuses, and methods are described for detecting and preventing arcs in a photovoltaic (PV) power system.

公开(公告)号：US11754655B2

公开(公告)日：2023-09-12

申请号：US17220430

申请日：2021-04-01

Applicant: Solaredge Technologies Ltd.

Inventor： David Braginsky ,  Dor Yairi ,  Ilan Yoscovich

IPC: G01R35/00 ,  G01R15/18 ,  G01R19/00

CPC classification number: G01R35/005 ,  G01R15/186 ,  G01R19/0092

Abstract: Systems, apparatuses, and methods are described for calibration of a current transformer. In some examples, one or more electrical elements may be affected in order to set a calibration of the current transformer. A calibration circuit of the current transformer may be permanently or non-permanently affected according to a calibration code in order to set the calibration of the current transformer. For example, one or more fuses may be burned to lock in a certain configuration of the current transformer.

公开(公告)号：US20230282404A1

公开(公告)日：2023-09-07

申请号：US18317264

申请日：2023-05-15

Applicant: Solaredge Technologies Ltd.

Inventor： Michael Manelis ,  Gil Litmanovitch ,  David Braginsky

IPC: H01F7/06 ,  H01F27/24 ,  H01F27/28 ,  H02P9/02

CPC classification number: H01F7/064 ,  H01F27/24 ,  H01F27/28 ,  H02P9/02

Abstract: An apparatus comprising a signal transformer coupled to a power line and a signal transmission, reception, or detection circuit. A sensor is configured to be responsive to the power line current or magnetic flux generated in a ferrite core of the signal transformer. When the sensor indicates that the flux generated by the power line current mat cause an attenuation of the signal strength, a second circuit generates a current through a flux cancelling winding that cancels at least some of the flux generated by the power line current.