摘要详情

ID / 提交时间

71 / 2022-06-29 19:50:51

标题

Variable-frequency Multi-phase-shift Control Strategy for Wide-range Bidirectional Resonant Converter Considering Detuning

关键字

bidirectional CLLLC resonant converter,variable-frequency control,multi-phase-shift control

主题及专题

Power Electronics Technology and Application > Control, modeling, and optimization of power converter

状态

终稿

作者

Dongtong Han / Huazhong University of Science and Technology

Changsong Chen / Huazhong University of Science and Technology；The State Key Laboratory of Advanced Electromagnetic Engineering and Technology

Mingyang Dong / Huazhong University of Science and Technology

Zhiwen Xu / Huazhong University of Science and Technology

Lin Gan / Huazhong University of Science and Technology

Jingyue Zhang / Huazhong University of Science and Technology

摘要

The CLLLC resonant converter naturally has symmetrical bidirectional power transmission characteristics due to its symmetrical circuit structure, but the transmission power and efficiency will be reduced when resonant network is detuned. In this paper, a mathematical model for the CLLLC resonant converter is established based on the first harmonic approximation(FHA) method. Then, a variable-frequency multi-phase-shift control strategy that can achieve bidirectional power transfer over a wide voltage range and reduce the adverse effects of detuning of the resonant network is proposed. Finally, through simulations and experiments, the proposed control strategy is proved to be able to reduce the adverse effect of detuning.