{
  "$type": "site.standard.document",
  "description": "A circuit for component voltage limitation and an apparatus for applying the same. A detection-and-control unit detects a parameter of a photovoltaic-cell string, and controls operation of a switch unit according to the parameter of the photovoltaic-cell string. The switch unit controls, according…",
  "path": "/patents/1414823",
  "publishedAt": "2025-11-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/00125",
    "SUNGROW POWER SUPPLY CO LTD [CN]"
  ],
  "textContent": "A circuit for component voltage limitation and an apparatus for applying the same. A detection-and-control unit detects a parameter of a photovoltaic-cell string, and controls operation of a switch unit according to the parameter of the photovoltaic-cell string. The switch unit controls, according to control of the detection-and-control unit, at least one photovoltaic cell connected to the switch unit to operate in the voltage-limited mode, or a photovoltaic cell operating in a voltage-limited mode to resume a normal output. In a case that the switch unit controls the at least one photovoltaic cell connected to the switch unit to operate in the voltage-limited mode according to control of the detection-and-control unit, a voltage of the photovoltaic-cell string can be reduced. Thereby, a quantity of photovoltaic modules connected in series can be increased while the highest voltage of the system is guaranteed not to exceed a corresponding requirement, and a cost of the system is reduced. In a case that that the switch unit controls the photovoltaic cell operating in the voltage-limited mode to resume the normal output according to control of the detection-and-control unit, an output voltage of the photovoltaic-cell string can be increased. Thereby, the rate of utilization on the direct voltage and the PVIR of DC/AC are improved for the photovoltaic system.",
  "title": "COMPONENT VOLTAGE LIMITING CIRCUIT AND DEVICE APPLYING SAME"
}