Implementation of Three-Level DC/DC Bidirectional CLLC Resonant Converter Applied in Medium-Voltage Solid-State Transformer

Yu Chai Hsiao, Jiann Fuh Chen, Guo Kai Wu

研究成果: Conference contribution

摘要

The medium-voltage solid-state transformers (SST) have played an important role in medium-voltage systems such as smart micro grids,renewable energy systems,traction systems and so on. Compared with traditional 50/60 Hz transformers,high operating frequency can greatly reduce the volume and weight of magnetic components. In this thesis,the three-level half bridge topology lets the voltages across the semiconductor elements are half of input voltage,therefore,the converter can withstand higher input voltage. The CLLC resonant structure realizes soft switching that reduce the switching loss to higher the converter's efficiency and bidirectional power transfer. In addition,the insulation system is designed to protect the converter and driving circuit from damaged when the circuit breaks down. A prototype circuit is made in this thesis. The high voltage side is 5.2 kV,the low voltage side is 400 V and the rated power is 40 kW. The cast resin transformer is used as isolation transformer in the circuit. Finally,the experimental high-voltage side 2.6 kV and the low-voltage side 200 V are used to verify and support the theoretical formula and the SIMPLIS simulation results.

原文English
主出版物標題2021 IEEE International Future Energy Electronics Conference, IFEEC 2021
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781665434485
DOIs
出版狀態Published - 2021
事件2021 IEEE International Future Energy Electronics Conference, IFEEC 2021 - Taipei, Taiwan
持續時間: 2021 11月 162021 11月 19

出版系列

名字2021 IEEE International Future Energy Electronics Conference, IFEEC 2021

Conference

Conference2021 IEEE International Future Energy Electronics Conference, IFEEC 2021
國家/地區Taiwan
城市Taipei
期間21-11-1621-11-19

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程
  • 控制和優化

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