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위상 변위제어기법을 이용한 저주파 다중레벨 스위칭 방식
우도(Yu Tao),문채주(C-J Moon),박성준(S-J Park),남해곤(H-K Nam),권순재(S-J Kwon) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
In this paper, we proposed the electric circuit using one common arm of H-Bridge Inverters to reduce the number of switching component in multi-level inverter combined with H-Bridge Inverters and Transformers. and furthermore we suggested the new multi-level PWM inverter using PWM level to reduce THD(Total Harmonic Distortion). and we used the switching method that can be same rate of usage at each transformer. Also, we tested the proposed prototype 9-level inverter to clarify the proposed electric circuit and reasonableness of control signal for the proposed multi-level PWM inverter.