Analysis of Control Characteristics of High Power Hybrid Multilevel PWM Rectifier

대용량 하이브리드 멀티레벨 PWM 정류기의 제어특성 해석

This paper presents analysis of control characteristics of high power hybrid multilevel PWM rectifier without bulky and heavy isolation transformers. It will be shown that the DC voltages for multilevel output generation may be directly built up from AC utility source. The multilevel PWM rectifier is analyzed by using the circuit DQ transformation whereby the static and dynamic characteristics and some useful design equations are obtained. Finally to confirm the validity of the analysis MATLAB simulation are carried out.