{
  "$type": "site.standard.document",
  "description": "A grid-connected power storage system (200) for coupling a power generation system (230) to a grid (240), including: a main battery (220a) for discharging stored power to the load system (250); at least one additional battery (220b) coupled to the main battery (220a) for discharging stored power to…",
  "path": "/patents/1012220",
  "publishedAt": "2011-06-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/32",
    "SAMSUNG SDI CO LTD [KR]"
  ],
  "textContent": "A grid-connected power storage system (200) for coupling a power generation system (230) to a grid (240), including: a main battery (220a) for discharging stored power to the load system (250); at least one additional battery (220b) coupled to the main battery (220a) for discharging stored power to the load system (250); a bidirectional converter (213) coupled to the main (220a) and additional (220b) batteries, and including a plurality of switches for performing a conversion between a DC link voltage, between the power generation system (230) and the grid (240), and a battery voltage (220), a first switch of the plurality of switches corresponding to the main battery (220a) and a second switch of the plurality of switches corresponding to the additional battery (220b), wherein the first and second switches are connected to each other in parallel; and an integrated controller (214) for selectively controlling operations of the first switch and the second switch based on an amount of power used by the load system (250).",
  "title": "Grid-connected power storage system and method for controlling grid-connected power storage system"
}