Study on resonant fly-back converter for DC distribution system

This paper describes a resonant &-back converter with thyristor switches, which can be used for the dc distribution with a PWM voltage-source inverter. The pmposed converter operates to change high-voltage dc into low-voltage dc with isolation and large converting ratio. The converter has a main thyristor switch and an LC resonant circuit with an auxiliary thyristor switch for commutation in the primary side of the gap transformel: The operation of proposed converter was verified through computer simulations with EMTP and experiments with a hardware scaled-model. The proposed converter could be implemented with commercially available components and proven technologies for supplying electricify to the rural or remote customer