{
  "$type": "site.standard.document",
  "description": "A drive control system controls travel of an electric vehicle, the drive control system including a plurality of induction motors, one inverter that drives the plurality of induction motors, and a controller that controls the inverter. The controller includes a coupling disconnection detecting unit…",
  "path": "/patents/1273740",
  "publishedAt": "2020-10-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L3/0061",
    "Mitsubishi Electric Corporation"
  ],
  "textContent": "A drive control system controls travel of an electric vehicle, the drive control system including a plurality of induction motors, one inverter that drives the plurality of induction motors, and a controller that controls the inverter. The controller includes a coupling disconnection detecting unit that calculates an estimated torque value on the basis of a total current and a voltage command value at the start of the induction motors, and detects disconnection of a coupling provided between the induction motors and a drive mechanism of the electric vehicle on the basis of the estimated torque value calculated and a torque command value.",
  "title": "ELECTRIC VEHICLE CONTROLLER"
}