A Commutation Strategy for Matrix Sinusoidal Waveform Converter with High-Frequency Link in Electric Power Systems

Abstract

To achieve safety commutation of the bidirectional switch in Matrix Sinusoidal waveform converter with high-frequency link, a decoupling time-driven strategy is proposed in this paper. The two gates in each bidirectional switch are driven by different signals, so the voltage surge caused by non-synchronous commutation of two bidirectional switches can be avoided, and both ZVS and ZCS are also achieved. Since the current polarity of load need not to be detected, the circuit is easy in realization. Experiments has been carried out to verify the feasibility of the proposed method.