摘要详情

ID / 提交时间

76 / 2023-10-11 14:01:22

标题

A New Driving Compensation Strategy to Improve Current Symmetry of Integrated Buck-Boost-LLC Converter

关键字

Full-bridge LLC converter,integrated converter,asymmetry current,driving compensation

主题及专题

2.Power electronic technology and application > (1)、Power converter topologies and design

状态

终稿

作者

Jin Wen / Huazhong University of Science and Technology

Jiajia Guan / Huazhong University of Science and Technology

Zongheng Wu / Huazhong University of Science and Technology

Wenzhe Xu / Huazhong University of Science and Technology

Wu Wu / State Key Laboratory of HVDC (Electric Power Research Institute,CSG)

Zhipeng He / State Key Laboratory of HVDC (Electric Power Research Institute,CSG)

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

Yong Kang / Huazhong University of Science and Technology;School of Electrical and Electronic Engineering

摘要

The inherent characteristics of the integrated Buck-Boost-LLC converter lead to the asymmetry of its resonant tank voltage, which further leads to the asymmetry of the resonant current as well as the demagnetization of the transformer, which seriously affects the operation of the converter. In this paper, a drive compensation strategy is proposed to suppress the asymmetry of voltage and current. By compensating the drive signals, a balanced matching of the resonant tank voltage in each period is realized, which greatly suppresses the second harmonic component and significantly improves the asymmetry of the current, and the simulation results show that the proposed method can reduce the asymmetry of the current from 100% to 3.6% at most, which verifies the effectiveness of the proposed strategy.