{
  "$type": "site.standard.document",
  "description": "Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device includes a three-phase synchronous motor including a…",
  "path": "/patents/1268715",
  "publishedAt": "2020-07-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02P23/14",
    "Hitachi Automotive Systems, Ltd."
  ],
  "textContent": "Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control device includes a three-phase synchronous motor including a three-phase winding, an inverter connected to the three-phase winding, a control unit for controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unit for estimating a rotor position θd based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.",
  "title": "Motor Control Device and Brake Control Device"
}