{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "The present invention relates to a method for detecting a leakage from any of the power cables of a DC bus to a ground, in particular from the output connections of a charger for an electric vehicle to a ground, comprising the steps of superposing a stimulus current comprising at least one…",
  "path": "/patents/950997",
  "publishedAt": "2015-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L3/0069",
    "ABB TECHNOLOGY AG [CH]"
  ],
  "textContent": "The present invention relates to a method for detecting a leakage from any of the power cables of a DC bus to a ground, in particular from the output connections of a charger for an electric vehicle to a ground, comprising the steps of superposing a stimulus current comprising at least one sinusoidal component to the charge current on the DC bus; measuring a response voltage on the bus; determining the impedance (capacitance and resistance) between the power cables and the ground based on a comparison of the superimposed stimulus current and the measured voltage and determining the presence of a ground fault when the determined resistance is lower than a predetermined or expected resistance. The invention further proposes a system for performing said method.",
  "title": "System and method for detecting a leakage from power cables of a DC bus to ground"
}