High-voltage isolated multioutput power supply for multilevel converters

Authors : AMIR SEPEHR, MEHDI SARADARZADEH, SHAHROKH FARHANGI

Pages : 3319-3333

View : 8 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Multilevel converters are one of the major choices for realizing high electric power conversion. The major feature of multilevel converter topologies is the need for a large number of switches, each of which requires a gate driver circuit and an isolated DC power supply. In this paper, a pragmatic concept of design and implementation of an isolated DC-to-DC converter for a high-voltage isolated application is introduced. More specifically, a multiple isolated output power supply based on the benefits of resonant converters is designed to prepare 36 double DC voltages for driving power semiconductor devices in a three-phase, seven-level cascaded H-bridge that acts as a static synchronous series compensator insert ignore into journalissuearticles values(SSSC);. The power supply contains several high-frequency transformers in series, carrying a high-frequency single turn current as their primary winding excitations, and they are improved by a resonant tank circuit to reduce switching and core losses. The proposed design has a high voltage insulation level, low cost, small size, adequate hold-up time, and an easily upwards extending structure. The feasibility of the design is clarified by simulation results and implementation in a high-power D-SSSC converter.
Keywords : Isolated DC power supply, multilevel converters, resonant converters, soft switching