{
  "$type": "site.standard.document",
  "description": "Embodiments of this application provide a photovoltaic power generation system. The system includes a single-stage inverter, an anti-backflow circuit, a photovoltaic string, and a coupling capacitor. The anti-backflow circuit is connected to one input end of the single-stage inverter, one output…",
  "path": "/patents/1393562",
  "publishedAt": "2025-09-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J1/108",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "Embodiments of this application provide a photovoltaic power generation system. The system includes a single-stage inverter, an anti-backflow circuit, a photovoltaic string, and a coupling capacitor. The anti-backflow circuit is connected to one input end of the single-stage inverter, one output end of the photovoltaic string is connected to the other input end of the single-stage inverter, and the other output end of the photovoltaic string is connected to the anti-backflow circuit. The photovoltaic string includes a buck optimizer and a photovoltaic panel. The anti-backflow circuit is configured to prevent a backflow current from flowing back to the photovoltaic string. The coupling capacitor is connected in parallel to two ends of the anti-backflow circuit, and is configured to transmit a signal between each buck optimizer in the photovoltaic string and the single-stage inverter, to control backflow of the backflow current when the anti-backflow circuit fails. Based on this, a bus voltage is reduced by using the single-stage inverter to reduce the backflow current, to reduce damage caused by the backflow current to the photovoltaic panel. In addition, the photovoltaic power generation system is formed by using the buck optimizer and the single-stage inverter, and therefore has a simple structure.",
  "title": "PHOTOVOLTAIC POWER GENERATION SYSTEM"
}