Maximizing power in a photovoltaic distributed power system

  • US 10,608,553 B2
  • Filed: 09/29/2017
  • Issued: 03/31/2020
  • Est. Priority Date: 01/30/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a plurality of parallel-connected compensated photovoltaic strings, each compensated photovoltaic string including;

    a photovoltaic string having a series-connection of photovoltaic cells; and

    a voltage-compensation circuit, wherein the voltage-compensation circuit is configured to produce an output power having an adjustable compensation voltage;

    a central controller connected to each voltage-compensation circuit; and

    a sensor connected to an output of the plurality of parallel-connected compensated photovoltaic strings and to the central controller,wherein the sensor is configured to sense a parameter at the output and provide the sensed parameter to the central controller, andwherein the central controller is configured to;

    determine a string voltage for the plurality of parallel-connected compensated photovoltaic strings; and

    control the adjustable compensation voltage of each voltage-compensation circuit based on;

    the sensed parameter, the string voltage, and a maximum power from the plurality of parallel-connected compensated photovoltaic strings.

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