{
  "$type": "site.standard.document",
  "description": "This application provides a grid-tied inverter apparatus and a grid-tied control method. The inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of power switching transistors based on an…",
  "path": "/patents/1392798",
  "publishedAt": "2025-12-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/01",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "This application provides a grid-tied inverter apparatus and a grid-tied control method. The inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of power switching transistors based on an output current value of the inverter apparatus, to adjust a resonance frequency of the filter circuit through different resonant branches, so that the resonance frequency meets a grid-tied requirement. In this application, when the switching frequencies of the plurality of power switching transistors in the inverter circuit are reduced due to overload of a power supply system, resonance may be produced through different resonant branches, to adjust the resonance frequency of the filter circuit in a timely manner, so as to ensure that the resonance frequency of the filter circuit meets a requirement for system stability. A response is fast, and a control method is simple, so that system stability and security are improved, and applicability is high.",
  "title": "GRID-TIED INVERTER APPARATUS AND GRID-TIED CONTROL METHOD"
}