{
  "$type": "site.standard.document",
  "description": "This application provides a converter, a grid power supply system, and a converter control method. An input end of the converter is coupled to a power supply in the grid power supply system, an output end of the converter is coupled to an alternating current grid, and the converter includes a…",
  "path": "/patents/1394368",
  "publishedAt": "2025-08-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/00",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "This application provides a converter, a grid power supply system, and a converter control method. An input end of the converter is coupled to a power supply in the grid power supply system, an output end of the converter is coupled to an alternating current grid, and the converter includes a converting module and a fault ride through control module. The fault ride through control module is configured to: when detecting that an asymmetric fault occurs in the alternating current grid, obtain fault ride through duration of historical asymmetric fault ride through that is closest to current time and that occurs in the alternating current grid, and control, based on the obtained fault ride through duration, the converting module to inject a negative-sequence reactive current into the alternating current grid. According to this application, the converter can inject the stable negative-sequence reactive current into the alternating current grid during an asymmetric fault period, so that stability and security of grid power supplying in a weak-grid are enhanced, and reliability of grid fault restoration is high.",
  "title": "CONVERTER, GRID POWER SUPPLY SYSTEM, AND CONVERTER CONTROL METHOD"
}