| 摘要 |
A rectifier apparatus includes AC voltage phase detecting means 201, AC current detecting means 103 and DC voltage detecting means 110, and is configured to follow the desired target current waveform by chopping of a semiconductor switch 104. The DC voltage is adjusted so that the phase when the chopping of the semiconductor switch starts becomes the desired phase. Further, the target current waveform includes an interval of a monotonous increase and a combination of definite values in the first half of the AC power half cycle, and an interval during which the current is zero in the last half. With this arrangement, suppression of the harmonic current and the reduction of the circuit loss are made compatible, and an identical current waveform is kept also when detection accuracy of the DC voltage is not high and load fluctuations occur. |
