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고속전철용 VVVF 인버터의 고조파 저감기법에 관한 연구
박영진,김연충,원충연,최종목,유호열,심은용,김영렬 성균관대학교 1997 학술회의지원논문목록집 Vol.1997 No.-
In this paper, the several PWM methods for harmonics reduction in current and voltage of the VVVF inverter are descrived. And the simulation has performed for the comparison of each method. For each methodm the line current and the spectra of the harmonic current are analyzed. In the past inverter, the output voltage supplied to the motor is not a sinusoidal one. So, the harmonic currents due to non-sinusoidal voltage cause excessive loss, heating and torque pulsations. It is proved that space-vector PWM is the best method in point of harmonics reduction.