{
  "$type": "site.standard.document",
  "description": "This application provides a photovoltaic system and a leakage current control method for the photovoltaic system. The photovoltaic system includes at least one photovoltaic module group, at least one photovoltaic inverter, a grounded metal frame, and a sampling control unit. The photovoltaic module…",
  "path": "/patents/1405976",
  "publishedAt": "2023-10-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/381",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "This application provides a photovoltaic system and a leakage current control method for the photovoltaic system. The photovoltaic system includes at least one photovoltaic module group, at least one photovoltaic inverter, a grounded metal frame, and a sampling control unit. The photovoltaic module group is mounted on the grounded metal frame. An output end of the photovoltaic module group is connected to an input end of the photovoltaic inverter, and an output end of the photovoltaic inverter is connected to a power grid. The sampling control unit is coupled to both the photovoltaic module group and the photovoltaic inverter, and is configured to detect a current value of a leakage current formed by a common-mode voltage of the photovoltaic inverter on a parasitic capacitor. Herein, the parasitic capacitor exists between the photovoltaic module group and the grounded metal frame. The sampling control unit is configured to adjust an injection amount of the common-mode voltage in a pulse width modulated signal of the photovoltaic inverter based on the detected current value of the leakage current, to reduce the leakage current of the photovoltaic system. This is simple in operation and high in applicability.",
  "title": "PHOTOVOLTAIC SYSTEM AND LEAKAGE CURRENT CONTROL METHOD FOR PHOTOVOLTAIC SYSTEM"
}