{
  "$type": "site.standard.document",
  "description": "It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter circuit, each of the input circuit electrically coupled to the inverter circuit through a positive…",
  "path": "/patents/1292496",
  "publishedAt": "2021-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R27/025",
    "Delta Electronics (Shanghai) Co., Ltd."
  ],
  "textContent": "It is disclosed an insulation impedance detection circuit and detection method of a photovoltaic inverter system. The photovoltaic inverter system includes one or more input circuits and an inverter circuit, each of the input circuit electrically coupled to the inverter circuit through a positive bus and a negative bus, with a first equivalent impedance Rbetween the positive bus and a protective earth point and a second equivalent impedance Rbetween the negative bus and the protective earth point. The detection circuit includes: a bus voltage sampling circuit coupled to the positive bus and the negative bus for generating a first bus voltage and a second bus voltage; a protective earth voltage sampling circuit coupled to the protective earth point for generating a first protective earth voltage and a second protective earth voltage; and a controller for calculating an equivalent insulation impedance.",
  "title": "INSULATION IMPEDANCE DETECTION CIRCUIT AND INSULATION IMPEDANCE DETECTION METHOD OF PHOTOVOLTAIC INVERTER SYSTEM"
}