{
  "$type": "site.standard.document",
  "description": "A motor drive device is provided which is able to reduce loss between a drive power source and a controller. The motor drive device (6) includes a plurality of motors (4), a single drive power source (7) which drives these motors (4), and a controller (8) which controls energizing times during…",
  "path": "/patents/954143",
  "publishedAt": "2016-01-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L15/08",
    "NTN TOYO BEARING CO LTD [JP]"
  ],
  "textContent": "A motor drive device is provided which is able to reduce loss between a drive power source and a controller. The motor drive device (6) includes a plurality of motors (4), a single drive power source (7) which drives these motors (4), and a controller (8) which controls energizing times during which motor coils of the plurality of motors (4) are energized, by a PWM drive method. The controller (8) includes phase shift portion (10a) which sets a PWM signal for causing a current to flow to the motor (4), into a phase different per motor. By the phase shift portion (10a) setting the PWM signal for causing a current to flow to the motor (4) into a phase different per motor, so-called overlap of energizing times of currents is avoided.",
  "title": "MOTOR DRIVE DEVICE"
}