Patent ID: 8693229
Filing Date: 2014-04-08
Classification: H02M,H02P

Abstract:
1. A power regeneration apparatus comprising: a power conversion unit connected to an AC power supply and having a function of converting DC power into AC power and regenerating the AC power to the AC power supply; an AC reactor connected between an AC-side terminal of the power conversion unit and the AC power supply; a voltage detecting unit for detecting an AC voltage supplied from the AC power supply and outputting an AC detection signal in accordance with the AC voltage; a phase detecting unit for detecting a phase of the AC power supply based on the AC detection signal; a drive control unit for controlling the power conversion unit based on a phase detection value detected by the phase detecting unit; and a reactive current component detecting unit for detecting a reactive current component of a current flowing through the AC-side terminal of the power conversion unit, wherein the drive control unit includes a phase correction section for correcting the phase detection value based on the reactive current component.