2-레그 3상 PWM 인버터의 출력전압에서 직류링크 리플전압의 영향 보상 = Compensation of Effects of DC-Link Ripple Voltages on Output Voltage of Two-Leg Three-Phase PWM Inverters

다국어 초록 (Multilingual Abstract)

In this paper, a simple scheme compensating for the effect of de-link ripple voltages on output voltage of two-leg and three-phase PWM inverters is proposed, where single-phase half-bridge PWM converter and two-leg inverter are used. The voltage at neutral point of the dc-link is controlled so that the upper-half of de-link voltage is equal to the lower-half voltage in average concept. However, the effect of the de-link ripple voltage results in the inverter output voltage and current distortion. This effect can be eliminated by introducing a compensation voltage in switching time calculation. Also, the inverter dead time should be compensated for sinusoidal output waveform. The proposed scheme has been verified by experimental results which were obtained from the V/F constant operation of the induction motor fed by two-leg inverter.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 단상-3상 ac/dc/dc PWM 컨버터
• 3. 기존의 직류링크 전압리플 보상법
• 4. 제안한 직류링크 전압리플 보상기법
• 5. 실험 결과 및 검토
• 6. 결론
• 감사의 글
• 참고문헌
• 저자소개