{
  "$type": "site.standard.document",
  "description": "In an uninterruptible power supply apparatus, a converter () is controlled such that terminal-to-terminal voltage (VDC) of a capacitor (Cd) becomes a first reference voltage (VDCr) in an inverter power feed mode and a bypass power feed mode. In a switching period in which the inverter power feed…",
  "path": "/patents/1289261",
  "publishedAt": "2021-04-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J9/061",
    "TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION"
  ],
  "textContent": "In an uninterruptible power supply apparatus, a converter () is controlled such that terminal-to-terminal voltage (VDC) of a capacitor (Cd) becomes a first reference voltage (VDCr) in an inverter power feed mode and a bypass power feed mode. In a switching period in which the inverter power feed mode and the bypass power feed mode are switched, the converter is controlled such that the terminal-to-terminal voltage of the capacitor becomes a second reference voltage (VDCr) higher than the first reference voltage to prevent circulating current (IC) from flowing through a path including the capacitor.",
  "title": "UNINTERRUPTIBLE POWER SUPPLY APPARATUS"
}