A New Isolated Railway Power Supply System Based on MMC and Scott Transformers
2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)(2022)
摘要
In view of the problems of negative sequence and neutral section existing in the current high-speed railway, a port-isolated co-phase power supply system based on modular multilevel converter (MMC) and Scott transformers is proposed. The structure of the proposed co-phase power supply system is designed, and its compensation principle and control system are analyzed. Compared with the existing co-phase power supply systems based on MMC, the proposed system can ensure the three-port isolation of power grid system, railway traction system and compensation system, and the active power compensator (APC) has a smaller capacity. Finally, correctness and validity of the proposed system is verified by simulation in MATLAB/Simulink.
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关键词
electrified railway,co-phase power supply system,modular multilevel converter,three-port isolation,power quality
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