| 摘要 |
A converter which converts an alternating current into a direct current detects a voltage on the direct current side, controls a voltage waveform of a voltage-controlled inverter so as to approach a preset pattern based upon the detected voltage on the direct current side, detects the AC voltage of the power source and the phase of a current on the alternating current side of the voltage-controlled inverter, and controls the control angle of the voltage-controlled inverter so as to approach a preset input power factor based upon the detected phase. The converter is capable of controlling the DC voltage over a wide range without increasing the voltage that is applied to the reactor, and maintaining a high input power factor. |
