Abstract
In this paper, a new four-quadrant (4Q) soft-switching converter for dc motor drives, namely the 4Q zero-voltage-transition (4Q-ZVT) converter, is proposed. It has some definite advantages over their hard-switching counterparts and other soft-switching converters. It offers zero-voltage-switching (ZVS) for all main switches and diodes, as well as unity device voltage and current stresses. It also has simple circuit topology, hence minimum hardware count and low cost.
