6-펄스 정류기를 위한 새로운 고조파전류 저감 방식에 관한 연구

Abstract

his paper presents a new current distortion suppression method for six-pulse bridge rectifiers, whereby high quality waveforms at both ends of the rectifier are possible. The methodology involves accurate shaping of the dc current by using two forced commutated switches. It is demonstrated by digital simulation that this action on the dc side is reflected back on the ac side, and as a result, perfect sinusoidal input currents are achieved. In addition, ripple-free voltages and currents are obtained on the dc side by using electrolytic capacitors and smoothing reactors.