| 摘要 |
<p>A power conversion device according to an embodiment of the present invention comprises a 3-phase inverter unit converting DC power into 3-phase AC power; an output terminal transformer converting the 3-phase AC power to have a magnitude required in a system and outputting the converted 3-pahse AC power; a measurement unit measuring a grid voltage of a primary side of the output terminal transformer and an output current of a secondary side of the output terminal transformer; a power factor calculating unit obtaining a current reference value by compensating for the output current using the grid voltage, the output current, and transformer characteristics data, and calculating an output power factor on the basis of the current reference value; and a power generating unit producing valid power and invalid poweer such that the output power factor reaches a preset power factor value, and outputting the produced valid power and invalid power to the output terminal transformer.</p> |
