Reduction of switching loss and low-order harmonics in three-phase PWM inverter using the selected harmonic elimination

특정고조파제거기법을 이용한 3상 PWM 인버터의 저차고조파제거 및 스위칭손실 저감에 관한 연구

Reference/modulating waveform continuity is not a necessary condition for the implementation of switching patterns for three-phase pulse-width modulated(PWM) converters. This is based on the fact that the converter phase-voltages do not need to be sinusoidal and switching pattern discontinuities do not degrade the quality of output/input voltage/current waveforms by introducing low-order harmonics if certain parameters are optimized. This paper introduces the selected harmonic elimination to reduce the switching frequency and low-order harmonics compared with continuous PWM techniques and some discontinues switching patterns for PWM converter.