An Advanced Distributed Power Supply for Power Electronic Transformers

The idea of power electronic transformer (PET), which work with solid-state switches, have been considered noticeably recently. Every power electronic transformer has several parts which each of them needs its own reliable supply voltage. So the appropriate performance of a PET depends on the existence of various proper supply voltages. The distributed power supply (DPS), which can produce several different supply voltages simultaneously with various powers and high reliability, may be the optimum choice available for the supply of different modules of a PET. Additionally, distributed energy generation sources may be used as the alternative source for the PET which in that case it´s reasonable to use a back-up battery in the power supply structure to provide the input energy at cut-off times and to increase the reliability. In this paper the idea of a distributed power supply with proper topology for a PET has been introduced and its enhanced reliability has been demonstrated by placing a battery in the power supply structure and checking its performance.