The Control of Single Phase Power Factor PWM converter using Reduced-Order Luenberger Observer

축소차원 Luenberger 관측기를 이용한 단산 PWM 컨버터의 고역률 제어

In this paper, a current control system for single phase PWM AC/DC converter without the source voltage sensors is proposed. The sinusoidal input current and unity effective power factor are realised based on the estimated source voltage in the controller. The estimation of source voltage is performed by the reduced-order Luenberger observer using actual currents. The estimated source voltage is used to accomplish unity power factor. The proposed method is proved by experiments.