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Power control system, power control device, and method for controlling power control system

  • US 10,250,041 B2
  • Filed: 04/18/2014
  • Issued: 04/02/2019
  • Est. Priority Date: 04/19/2013
  • Status: Active Grant
First Claim
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1. A power control system comprising:

  • a storage cell;

    a power generation device that generates power while a current sensor detects forward power flow; and

    a power control device includinga first power converter configured to convert AC power from a commercial power grid to DC power and supply the DC power to the storage cell during an interconnected operation, anda supply unit configured to supply power generated by the power generation device to the storage cell during an independent operation;

    an independent operation switch opened during the interconnected operation and closed during the independent operation to cause output from the first power converter to flow in a direction of the forward power flow through the current sensor; and

    an interconnected operation switch that is open during the independent operation to prevent output from the commercial power grid to flow in the direction of the forward power flow through the current sensor,wherein the first power converter is a single device and is a two-way inverter,wherein a first input/output unit of the first power converter is connected to the storage cell, andwherein a second input/output unit of the first power converter is connected to the commercial power grid via the interconnected operation switch and is connected to the current sensor via the independent operation switch.

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