{
  "$type": "site.standard.document",
  "description": "Based on rotation information of a synchronous machine (5) detected by rotation information detection means (6), control means (7) cause a converter (2) to boost a charge voltage Vc of a capacitor (3) so as to be higher than an induced voltage Vm generated by the synchronous machine (5) at the time…",
  "path": "/patents/1012913",
  "publishedAt": "2011-05-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L15/025",
    "MITSUBISHI ELECTRIC CORP [JP]"
  ],
  "textContent": "Based on rotation information of a synchronous machine (5) detected by rotation information detection means (6), control means (7) cause a converter (2) to boost a charge voltage Vc of a capacitor (3) so as to be higher than an induced voltage Vm generated by the synchronous machine (5) at the time of shifting to a coasting operation, maintain the charge voltage (Vc) during the coasting operation, and perform a weak field control so that the induced voltage (Vm) generated by the synchronous machine (5) becomes lower than a DC voltage (Vdc) at the time of shifting from the coasting operation to a power running operation or to a regenerative operation.",
  "title": "POWER CONVERSION DEVICE"
}