A Study on High Power-Factor Control of Boost Type Rectifier Using Duty Cycle Pattern

듀티비 패턴을 이용한 승압형 정류기의 고역률 구현에 관한 연구

This paper proposes a new control scheme for enhanced power factor in the boost type AC/DC rectifier. The control scheme is to generate duty-cycle pattern without instantaneous measurement of the input line current. With a very simple controller structure the line current is forced to trace a sinusoid in phase with input voltage. The simulation results show the validity of the proposed control scheme.