Systems and Methods to Increase the Reliability and the Service Life Time of Photovoltaic (PV) Modules

    公开(公告)号:US20230396070A1

    公开(公告)日:2023-12-07

    申请号:US18451385

    申请日:2023-08-17

    CPC classification number: H02J3/381 H02J2300/26 H02J2300/24 H02J3/388

    Abstract: A method may include: applying a first voltage on at least one first terminal of a first direct current (DC) bus electrically connected to a power source, obtaining at least one indication that discharge of a second voltage related to the first voltage should be performed, and discharging the second voltage by electrically connecting at least one second terminal of a second DC bus to a ground in response to the at least one indication. Another method may include: injecting a current at at least one terminal of a direct current (DC) bus that is electrically connected to a power source, simultaneous to injecting the current, measuring an insulation relative to ground, obtaining an electrical parameter related to the power source, and, in response to the electrical parameter, maintaining the current injected at the terminal of the DC bus without ceasing the measuring of the insulation relative to a ground.

    Systems and Methods to Increase the Reliability and the Service Life Time of Photovoltaic (PV) Modules

    公开(公告)号:US20220131384A1

    公开(公告)日:2022-04-28

    申请号:US17570861

    申请日:2022-01-07

    Abstract: A method may include: applying a first voltage on at least one first terminal of a first direct current (DC) bus electrically connected to a power source, obtaining at least one indication that discharge of a second voltage related to the first voltage should be performed, and discharging the second voltage by electrically connecting at least one second terminal of a second DC bus to a ground in response to the at least one indication. Another method may include: injecting a current at at least one terminal of a direct current (DC) bus that is electrically connected to a power source, simultaneous to injecting the current, measuring an insulation relative to ground, obtaining an electrical parameter related to the power source, and, in response to the electrical parameter, maintaining the current injected at the terminal of the DC bus without ceasing the measuring of the insulation relative to a ground.

    Disconnection of a string carrying direct current power

    公开(公告)号:US11271394B2

    公开(公告)日:2022-03-08

    申请号:US15934358

    申请日:2018-03-23

    Abstract: A direct current (DC) power combiner operable to interconnect multiple interconnected photovoltaic strings is disclosed. The DC power combiner may include a device adapted for disconnecting at least one photovoltaic string from the multiple interconnected photovoltaic strings, each photovoltaic string connectible by a first and second DC power line. The device may include a differential current sensor adapted to measure differential current by comparing respective currents in the first and second DC power lines. A first switch is connected in series with the first DC power line. A control module is operatively attached to the differential current sensor and the first switch. The control module may be operable to open the first switch when the differential current sensor measures the differential current to be greater than a maximum allowed current differential, thereby disconnecting the photovoltaic string from the interconnected photovoltaic strings.

    Photovoltaic Module
    7.
    发明申请

    公开(公告)号:US20210249867A1

    公开(公告)日:2021-08-12

    申请号:US17126829

    申请日:2020-12-18

    Abstract: A photovoltaic module including a photovoltaic panel and an electrical circuit connected thereto. The photovoltaic panel may include multiple bus bars connected to an input of the electrical circuit. The electrical circuit may include at least one input bypass circuit connected across the bus bars at the input of the electrical circuit. Circuitry may include a switch connected between the input and the output of the electrical circuit. The circuitry may function to disconnect the photovoltaic panel from the output of the electrical circuit. An output bypass circuit is connected to the output of the electrical circuit. The output of the electrical circuit is connectible to a second like electrical circuit of a second like photovoltaic module. The output bypass circuit may be an active bypass circuit which draws power from the output of the electrical circuit.

    Terminal Sensor Array
    8.
    发明申请

    公开(公告)号:US20210063437A1

    公开(公告)日:2021-03-04

    申请号:US17005494

    申请日:2020-08-28

    Abstract: An apparatus having a conducting probe configured to couple with an electrical conductor of an electrical terminal. The apparatus has a sensor in contact with the conducting probe. The apparatus has a controller electrically coupled to the sensor, where the controller is configured to monitor the sensor values, and when the sensor values comply with a monitoring rule associated with a hazardous condition, the controller is configured to initiate an action to mitigate the hazardous condition.

    DISCONNECTION OF A STRING CARRYING DIRECT CURRENT POWER

    公开(公告)号:US20170279265A1

    公开(公告)日:2017-09-28

    申请号:US15621544

    申请日:2017-06-13

    Abstract: A direct current (DC) power combiner operable to interconnect multiple interconnected photovoltaic strings is disclosed. The DC power combiner may include a device adapted for disconnecting at least one photovoltaic string from the multiple interconnected photovoltaic strings, each photovoltaic string connectible by a first and second DC power line. The device may include a differential current sensor adapted to measure differential current by comparing respective currents in the first and second DC power lines. A first switch is connected in series with the first DC power line. A control module is operatively attached to the differential current sensor and the first switch. The control module may be operable to open the first switch when the differential current sensor measures the differential current to be greater than a maximum allowed current differential, thereby disconnecting the photovoltaic string from the interconnected photovoltaic strings.

    Photovoltaic panel circuitry
    10.
    发明授权
    Photovoltaic panel circuitry 有权
    光伏面板电路

    公开(公告)号:US08988838B2

    公开(公告)日:2015-03-24

    申请号:US13753041

    申请日:2013-01-29

    Abstract: Circuits integrated or integrable with a photovoltaic panel to provide built-in functionality to the photovoltaic panel including safety features such as arc detection and elimination, ground fault detection and elimination, reverse current protection, monitoring of the performance of the photovoltaic panel, transmission of the monitored parameters and theft prevention of the photovoltaic panel. The circuits may avoid power conversion, for instance DC/DC power conversion, may avoid performing maximum power tracking to include a minimum number of components and thereby increase overall reliability.

    Abstract translation: 与光伏面板集成或集成的电路,为光伏面板提供内置功能,包括电弧检测和消除,接地故障检测和消除,反向电流保护,光伏面板性能监控等安全功能 监测参数和防止光伏板的盗窃。 这些电路可以避免功率转换,例如DC / DC电源转换,可以避免执行最大功率跟踪以包括最小数量的部件,从而提高总体可靠性。

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