직렬접속형 다이오드 정류기 시스템의 전류주입에 의한 고조파 저감

Drawing Sinusoidal Input Currents of Series-Connected Diode Rectifiers by A Current Injection Technique

This paper proposes a new series-connected diode rectifier which draws sinusoidal input currents. The proposed rectifier system is configured by adding an auxiliary circuit to the conventional 12-pulse series-connected diode rectifier and employing a current injection technique. A low kVA (0.02Po (PU) ) active current source injects a triangular current results in near sinusoidal input current from the utility with less than 1% THD. The resulting system is suitable for high voltage and high power applications. Experimental results is provided from a 220VA rectifier system.