×

GRID-CONNECTED POWER STORAGE SYSTEM AND METHOD FOR CONTROLLING GRID-CONNECTED POWER STORAGE SYSTEM

  • US 20110133558A1
  • Filed: 07/21/2010
  • Published: 06/09/2011
  • Est. Priority Date: 12/03/2009
  • Status: Active Grant
First Claim
Patent Images

1. A grid-connected power storage system for coupling a power generation system to a grid to supply power to a load system, comprising:

  • a main battery for discharging stored power to the load system;

    at least one additional battery coupled to the main battery for discharging stored power to the load system;

    a bidirectional converter coupled to the main and additional batteries, and comprising a plurality of switches for performing a conversion between a DC link voltage, between the power generation system and the grid, and a battery voltage, a first switch of the plurality of switches corresponding to the main battery and a second switch of the plurality of switches corresponding to the additional battery, wherein the first and second switches are connected to each other in parallel; and

    an integrated controller for selectively controlling operations of the first switch and the second switch based on an amount of power used by the load system.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×