직류측 센서만을 이용한 3상 PWM 정류기의 제어

In this abstract, a novel control scheme of voltage-source PWM rectifiers using only dc-side sensors is proposed. The phase currents are reconstructed from switching states of the rectifier and the dc output current. For effective current control, the current and the magnitude of the source voltage are estimated by phase estimator and magnitude estimator, respectively. The validity of the proposed ac sensorless technique is verified by experimental results.