Cascaded LC‐AC transformer unidirectional DC/DC converter with high stepping ratio | Zendy

Li Mengbo | Zendy; Xiang Wang | Zendy; Yao Liangzhong | Zendy; Xie Zhujun | Zendy; Lin Weixing | Zendy; Wen Jinyu | Zendy

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Cascaded LC‐AC transformer unidirectional DC/DC converter with high stepping ratio

Author(s) -

Li Mengbo,

Xiang Wang,

Yao Liangzhong,

Xie Zhujun,

Lin Weixing,

Wen Jinyu

Publication year - 2018

Publication title -

ieej transactions on electrical and electronic engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.254

H-Index - 30

eISSN - 1931-4981

pISSN - 1931-4973

DOI - 10.1002/tee.22691

Subject(s) - forward converter , flyback converter , transformer , electrical engineering , ćuk converter , topology (electrical circuits) , charge pump , inductor , capacitor , buck–boost converter , boost converter , electronic engineering , voltage , computer science , engineering

This paper proposes a unidirectional DC/DC converter termed LCT DC/DC, which has a high stepping ratio and is suitable for integrating renewable energy sources. The LCT DC/DC converter consists of four power modules, and each of them is composed of a voltage source converter (VSC), an inductor−capacitor circuit, an AC transformer, and a diode rectifier bridge. By means of the two‐stage voltage boost, a step‐up ratio as high as 40 is achieved. The topology, operating principle, and design procedure of the LCT DC/DC are elaborated. Then, the active power control strategy and power loss estimation are studied. Finally, the technical feasibility of the proposed topology is validated by simulations in PSCAD/EMTDC. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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