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Design of a Soft-Switching DC Converter for 110V Power Supply in Medium-Low Speed Maglev Trains
ID：104 View Protection：ATTENDEE Updated Time：2025-10-13 11:23:35 Hits：234 Poster Presentation

Start Time：2025-11-09 09:06（Asia/Shanghai）

Duration：1min

Session：P Poster presentation » P22.Power electronics technology and application

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Abstract
This study presents an innovative DC-DC converter solution employing modular full-bridge soft-switching technology, specifically designed to meet the power supply demands of medium-low speed maglev trains. The proposed solution features an active secondary-clamped ZVZCS-PWM topology that successfully achieves zero-voltage switching (ZVS) in leading bridge arms and zero-current switching (ZCS) in lagging bridge arms, delivering significant reductions in switching losses while effectively suppressing electromagnetic interference. Through optimized integration of EMI filters, high-frequency transformers, and LLC resonant structures - combined with a three-module parallel architecture and maximum current auto-balancing algorithm - the solution not only ensures balanced thermal load distribution but also enhances system current-sharing performance. Simulation results from the Simulink platform demonstrate that the system exhibits: (1) superior soft-switching characteristics, (2) exceptional load-step recovery capability, and (3) optimal current-sharing performance. These findings comprehensively validate the solution's practical value in improving both operational efficiency and reliability for maglev train power supply systems.
Keywords
modularization,DC-DC converter,parallel current sharing,high-frequency converter,maglev train
Speaker
Wen Ji
Professor Tongji University

Submission Author
Zitong Xiong Tongji University
Junqi Xu Tongji University
Shu Cheng Central South University
Guobin Lin Tongji University
Lijun Rong Tongji University
Wen Ji Tongji University
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Important Date

  • Conference Date

    Nov 07

    2025

    to

    Nov 09

    2025

  • Oct 30 2025

    Draft paper submission deadline

  • Nov 10 2025

    Registration deadline

Sponsored By
IEEE西南交通大学IAS学生分会
Organized By
西南交通大学电气工程学院
SPACI车网关系研究室
四川大学电力系统稳定与高压直流输电研究团队
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