{
  "$type": "site.standard.document",
  "description": "An object is to obtain a heat pump device that stably heats a compressor regardless of the stop position of a rotor of a motor. The present invention is a heat pump device that includes a compressor 1 including a compression mechanism 7 and a motor 8, a heat exchanger 3,5, an inverter 9, and an…",
  "path": "/patents/967391",
  "publishedAt": "2014-11-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/143",
    "MITSUBISHI ELECTRIC CORP [JP]"
  ],
  "textContent": "An object is to obtain a heat pump device that stably heats a compressor regardless of the stop position of a rotor of a motor. The present invention is a heat pump device that includes a compressor 1 including a compression mechanism 7 and a motor 8, a heat exchanger 3,5, an inverter 9, and an inverter control unit 10 including a drive-signal generation unit 15 generating a drive signal for the inverter 9 and a heating-operation-mode control unit 12 controlling the drive-signal generation unit 15 when the compressor is heated by applying, to the motor, a high-frequency voltage with which the motor cannot be rotationally driven, wherein the heating-operation-mode control unit 12 includes a magnetic-pole-position estimation unit 13 estimating a magnetic pole position indicating a stop position of a rotor of the motor 8, and a high-frequency energization unit 14 determining an amplitude and a phase of a voltage command expressed by a sine wave based on an estimation result of the magnetic pole position and a necessary amount of heat, notifies the drive-signal generation unit 15 of determined amplitude and phase, and causes the drive-signal generation unit 15 to generate a drive signal.",
  "title": "HEAT PUMP DEVICE, AIR CONDITIONER, AND REFRIGERATOR"
}