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ENERGY STORAGE SYSTEM FOR PHOTOVOLTAIC ENERGY AND METHOD OF STORING PHOTOVOLTAIC ENERGY

  • US 20180331543A1
  • Filed: 05/14/2018
  • Published: 11/15/2018
  • Est. Priority Date: 05/15/2017
  • Status: Abandoned Application
First Claim
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1. A power system for capturing low voltage energy from a power source, the power system comprising:

  • the power source coupled to a DC bus;

    a DC/DC power converter coupled to the DC bus and an energy storage device;

    a power inverter coupled to the DC bus and an AC bus; and

    a control system, the control system comprising one or more controllers configured to;

    monitor a voltage produced by the power source;

    determine whether the power source is producing a voltage greater than a first predetermined threshold;

    determine whether the power source is producing a voltage less than a second threshold when it is determined that the power source is producing a voltage greater than the first predetermined threshold;

    when it is determined that the power source is producing a voltage between the first threshold and the second threshold;

    control the DC/DC power converter to operate in an MPPT mode and store energy generated by the power source in the energy storage device; and

    control the power inverter not to operate in an MPPT mode; and

    when it is determined that the power source is producing a voltage greater than or equal to the second threshold;

    control the power inverter to operate in an MPPT mode and supply the energy generated by the power source to a power grid through the AC bus; and

    control the DC/DC power converter not to operate in an MPPT mode.

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