Distributed Power Harvesting Systems Using DC Power Sources
    94.
    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

    Abstract: 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.

    Abstract translation: 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。

    Maximizing Power in a Photovoltaic Distributed Power System
    96.
    发明申请
    Maximizing Power in a Photovoltaic Distributed Power System 有权
    最大限度地发挥光伏分布式电力系统的功率

    公开(公告)号:US20130193765A1

    公开(公告)日:2013-08-01

    申请号:US13754059

    申请日:2013-01-30

    Inventor: Ilan Yoscovich

    CPC classification number: H02M7/42 H02J3/385 Y02E10/58 Y10T307/675 Y10T307/685

    Abstract: A power harvesting system including multiple parallel-connected photovoltaic strings, each photovoltaic string includes a series-connection of photovoltaic panels. Multiple voltage-compensation circuits may be connected in series respectively with the photovoltaic strings. The voltage-compensation circuits may be configured to provide respective compensation voltages to the photovoltaic strings to maximize power harvested from the photovoltaic strings. The voltage-compensation circuits may be include respective inputs which may be connected to a source of power and respective outputs which may be connected in series with the photovoltaic strings.

    Abstract translation: 包括多个并联连接的光伏电力串的功率收集系统,每个光伏串组包括光伏面板的串联连接。 多个电压补偿电路可以分别与光伏串联连接。 电压补偿电路可以被配置为向光伏串提供相应的补偿电压,以最大化从光伏电池串收集的功率。 电压补偿电路可以包括可以连接到功率源的相应输入和可以与光伏串串联连接的各个输出。

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