{
  "$type": "site.standard.document",
  "description": "An open-circuit voltage value acquisition unit (104) acquires a first open-circuit voltage value of a first power supply, when a first switch (Tra) is in an off period while a potential controller (102) performs control such that a voltage at a first backflow prevention circuit on a side opposite…",
  "path": "/patents/971102",
  "publishedAt": "2014-08-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/381",
    "OMRON TATEISI ELECTRONICS CO [JP]"
  ],
  "textContent": "An open-circuit voltage value acquisition unit (104) acquires a first open-circuit voltage value of a first power supply, when a first switch (Tra) is in an off period while a potential controller (102) performs control such that a voltage at a first backflow prevention circuit on a side opposite to the first power supply is greater than or equal to a voltage at the first backflow prevention circuit on the side of the first power supply. A power supply abnormality determination unit (106) determines whether the first power supply has an abnormality based on comparison between the first open-circuit voltage value and a first reference voltage value that is previously fixed based on a characteristic of the first power supply.",
  "title": "Power conditioner, photovoltaic system, and abnormality determination method"
}