{
  "$type": "site.standard.document",
  "description": "This application provides an MLPE device and a control method thereof, and a photovoltaic system. When determining that receiving of a heartbeat signal is continuously interrupted from a first time point to a second time point, the MLPE device considers that signal receiving is abnormal. If it is…",
  "path": "/patents/1390262",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/381",
    "HUAWEI TECH CO LTD [CN]"
  ],
  "textContent": "This application provides an MLPE device and a control method thereof, and a photovoltaic system. When determining that receiving of a heartbeat signal is continuously interrupted from a first time point to a second time point, the MLPE device considers that signal receiving is abnormal. If it is determined that an output current is less than a current threshold, it indicates that the MLPE device is in a scenario in which safe shutdown is required, and an output voltage is controlled to be less than a voltage threshold or output power is controlled to be less than a power threshold. If it is determined that the output current is greater than or equal to the current threshold, it indicates that the MLPE device is in a scenario in which a communication signal is unstable and that an output can be maintained. In this case, the output voltage is controlled to be greater than or equal to the voltage threshold or the output power is controlled to be greater than or equal to the power threshold from the second time point to a third time point, to prolong output time of the photovoltaic system, and increase effective hours of the photovoltaic system. If receiving of the heartbeat signal is continuously interrupted from the second time point to the third time point, it indicates that signal receiving is not recovered to normal, and the output voltage is controlled to be less than the voltage threshold or the output power is controlled to be less than the power threshold.",
  "title": "MLPE DEVICE AND CONTROL METHOD THEREOF, AND PHOTOVOLTAIC SYSTEM"
}