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

축소차원 Luenberger 관측기를 이용한 단상 PWM 컨버터의 고역율 제어

In this paper, the authors propose a current control system of single phase PWM AC/DC converter without the source voltage sensors. The sinusoidal input current and unity effective power factor are realised based on the estimated source voltage in the controller. The estimations of source voltage are performed based on 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 simulations