Single phase high-voltage matrix converter for traction drive with medium frequency transformer

Abstract

This paper describes the realization variants of the new traction drive for AC-power system with high-voltage matrix converter and medium frequency transformer (i.e. MFT). These topologies allow minimizing the weight of the traction transformer in railroad vehicles. Special attention is given to serial connection of input single-phase high voltage matrix converters fed MFT transformers. The control method involving the reduction of MFT magnetic saturation has been discussed.