{
  "$type": "site.standard.document",
  "description": "There is provided a grid-connected power conversion device including: one or more DC/DC converters connected to one or more renewable energy sources, respectively; a DC link unit whose voltage value is determined by the sum of currents output from the one or more DC/DC converters; and an inverter…",
  "path": "/patents/994320",
  "publishedAt": "2013-01-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J1/102",
    "SAMSUNG ELECTRO MECH [KR]"
  ],
  "textContent": "There is provided a grid-connected power conversion device including: one or more DC/DC converters connected to one or more renewable energy sources, respectively; a DC link unit whose voltage value is determined by the sum of currents output from the one or more DC/DC converters; and an inverter unit determining a current command value from the voltage value of the DC link unit, and generating an AC voltage according to the current command value. Since the respective DC/DC converters are available for the MPPT and the modulation index of the inverter are maximized, the efficiency may be improved. Also, since the modulation index can be maximized, a total harmonic distortion may be reduced. In addition, since the inverter can be operated according to the two-phase modulation scheme, harmonic and a switching loss may be reduced.",
  "title": "Grid-connected power conversion device"
}