Matrix converter with a novel general commutation strategy

A novel general commutation strategy is proposed for n-phase to m-phase matrix converter applications. The proposed circuit with a simple RC snubber as commutation aid requires no extra sensing information allowing conventional dead time commutation. In this paper, detailed commutation procedure of the proposed circuit is analyzed; the choice of specific semiconductor switches and snubber components is also derived and given. The operation of the proposed circuit is very stable, reliable and robust. Finally, experimental results support the validity of the proposed structure and circuit.