Testing of a photovoltaic panel
    52.
    发明授权
    Testing of a photovoltaic panel 有权
    测试光伏面板

    公开(公告)号:US09537445B2

    公开(公告)日:2017-01-03

    申请号:US14954209

    申请日:2015-11-30

    摘要: 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.

    摘要翻译: 一种用于测试连接到电子模块的光伏面板的方法。 电子模块包括附接到光伏面板的输入和功率输出。 该方法激活旁路到电子模块。 旁路在电子模块的输入和输出之间提供低阻抗路径。 电流被注入到电子模块中,从而在测试期间补偿电子模块的存在。 可以预先通过测量电子模块的电路参数来确定电流。 电路参数可以是阻抗,电感,电阻或电容。

    Distributed power system using direct current power sources

    公开(公告)号:US09368964B2

    公开(公告)日:2016-06-14

    申请号:US14078011

    申请日:2013-11-12

    摘要: A distributed power system including multiple (DC) batteries each DC battery with positive and negative poles. Multiple power converters are coupled respectively to the DC batteries. Each power converter includes a first terminal, a second terminal, a third terminal and a fourth terminal. The first terminal is adapted for coupling to the positive pole. The second terminal is adapted for coupling to the negative pole. The power converter includes: (i) a control loop adapted for setting the voltage between or current through the first and second terminals, and (ii) a power conversion portion adapted to selectively either: convert power from said first and second terminals to said third and fourth terminals to discharge the battery connected thereto, or to convert power from the third and fourth terminals to the first and second terminals to charge the battery connected thereto. Each of the power converters is adapted for serial connection to at least one other power converter by connecting respectively the third and fourth terminals, thereby forming a serial string. A power controller is adapted for coupling to the serial string. The power controller includes a control part adapted to maintain current through or voltage across the serial string at a predetermined value.

    Distributed Power Harvesting Systems Using DC Power Sources
    55.
    发明申请
    Distributed Power Harvesting Systems Using DC Power Sources 有权
    使用直流电源的分布式电力收集系统

    公开(公告)号:US20150333692A1

    公开(公告)日:2015-11-19

    申请号:US14809511

    申请日:2015-07-27

    IPC分类号: H02S40/34

    摘要: A photovoltaic panel with multiple photovoltaic sub-strings including serially-connected photovoltaic cells and having direct current (DC) outputs adapted for interconnection in parallel into a parallel-connected DC power source. A direct current (DC) power converter including input terminals and output terminals is adapted for coupling to the parallel-connected DC power source and for converting an input power received at the input terminals to an output power at the output terminals. The direct current (DC) power converter optionally has a control loop configured to set the input power received at the input terminals according to a previously determined criterion. The control loop may be adapted to receive a feedback signal from the input terminals for maximizing the input power. A bypass diode is typically connected in shunt across the input terminals of the converter. The bypass diode functions by passing current during a failure of any of the sub-strings and/or a partial shading of the sub-strings. The bypass diode may be a single bypass diode connected across the parallel-connected DC power source. The DC power converter may convert the input power at high current to the output power at a lower current. The output terminals may be connectible with wire cables to a load, and the DC power converter is configured to reduce energy loss through the wire cables to the load.

    摘要翻译: 一种具有多个光伏子串的光伏面板,包括串联连接的光伏电池,并具有适于互并联并联连接的直流电源的直流(DC)输出。 包括输入端子和输出端子的直流(DC)功率转换器适于耦合到并联DC电源并将在输入端子接收的输入功率转换为输出端子处的输出功率。 直流(DC)电力转换器可选地具有控制回路,其被配置为根据先前确定的标准来设置在输入端子处接收的输入功率。 控制回路可以适于从输入端接收反馈信号,以使输入功率最大化。 旁路二极管通常连接在转换器的输入端上并联。 旁路二极管通过在任何子串的故障期间传递电流和/或子串的部分阴影来起作用。 旁路二极管可以是连接在并联的直流电源上的单个旁路二极管。 DC电力转换器可以以较低电流将高电流下的输入功率转换为输出功率。 输出端子可以与线缆连接到负载,并且DC功率转换器被配置为减少通过电缆到负载的能量损耗。

    Photovoltaic panel circuitry
    57.
    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

    摘要: 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.

    摘要翻译: 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。

    Dual Use Photovoltaic System
    58.
    发明申请
    Dual Use Photovoltaic System 审中-公开
    双用光伏系统

    公开(公告)号:US20140159494A1

    公开(公告)日:2014-06-12

    申请号:US14187756

    申请日:2014-02-24

    IPC分类号: H02J7/35

    摘要: A system for providing power from a direct current (DC) source to the power grid. The system includes a first inverter with an input and an output. The input is adapted to connect to the DC source. A first switch disposed between the output and the power grid. A second inverter with a DC terminal and an AC terminal, the AC terminal is adapted to connect in parallel with the output of the first inverter. A battery adapted to connect to the DC terminal of the second inverter. A second switch connected between the DC terminal of the second inverter and the input of the first inverter. The second switch also operatively connects the DC source to the battery. The system may further include a charging circuit adapted to be disposed between the input and the DC terminal and a load adapted to connect to the output.

    摘要翻译: 用于从直流(DC)源向电网提供电力的系统。 该系统包括具有输入和输出的第一反相器。 该输入适用于连接到直流电源。 布置在输出和电网之间的第一开关。 具有DC端子和AC端子的第二逆变器,AC端子适于与第一反相器的输出并联连接。 适于连接到第二逆变器的DC端子的电池。 连接在第二反相器的直流端子和第一反相器的输入端之间的第二开关。 第二开关还可操作地将DC源连接到电池。 该系统还可以包括适于布置在输入端和DC端子之间的充电电路以及适于连接到输出端的负载。