{
  "$type": "site.standard.document",
  "description": "A method and an apparatus for determining a phase (¸) and a frequency (É) of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component (V ±1 , V ²1 ) of the electric quantity, calculating a positive…",
  "path": "/patents/987658",
  "publishedAt": "2013-08-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R23/02",
    "SIEMENS AG [DE]"
  ],
  "textContent": "A method and an apparatus for determining a phase (¸) and a frequency (É) of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component (V ±1 , V ²1 ) of the electric quantity, calculating a positive sequence component (V + ±1 , V + ²1 ) of the electric quantity based on the extracted fundamental component (V ±1 , V ²1 ), and determining the phase and the frequency of the electric quantity based on the calculated positive sequence component (V + ±1 , V + ²1 ).",
  "title": "Determining a phase and a frequency of an electric quantity of an operating electrical device"
}