{
  "$type": "site.standard.document",
  "description": "A power supply system and a control method are provided, where the power supply system includes: an active power contactor (1), a standby power contactor (2), an auxiliary power contactor (3), a control switch (4), and a controller (7). The active power contactor (1) is connected in series in a…",
  "path": "/patents/1398063",
  "publishedAt": "2025-09-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J9/068",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "A power supply system and a control method are provided, where the power supply system includes: an active power contactor (1), a standby power contactor (2), an auxiliary power contactor (3), a control switch (4), and a controller (7). The active power contactor (1) is connected in series in a path of a main power supply circuit, and the standby power contactor (2) is connected in series in a path of a standby power supply circuit. The active power contactor (1) and the standby power contactor (2) are interlocked through the auxiliary power contactor (3). The auxiliary power contactor (3) and the control switch (4) are connected in series. The controller (7) is configured to: when the main power supply circuit is abnormal, control the control switch (4) to change a status of the auxiliary power contactor (3), to switch to the standby power supply circuit; or when the standby power supply circuit is abnormal, control the control switch (4) to change the status of the auxiliary power contactor (3), to switch to the main power supply circuit. According to the power supply system and the control method, when various exceptions occur in the power supply system, switching of the power supply path can be implemented, so as to provide more comprehensive protection for the power supply system, and avoid more serious faults caused by the exceptions.",
  "title": "POWER SUPPLY SYSTEM AND CONTROL METHOD"
}