文献类型：会议论文

英文题名：An Unbalanced PWM with?Minimum Current Trajectory for?a?Semi-Dual-Bridge Resonant Converter

作者：Jin, Shusheng[1]; Hu, Song[1]; Li, Qiaoshan[1]; Wang, Yiwang[2]; Lu, Ming[3]

第一作者：Jin, Shusheng

机构：[1] School of Electrical Engineering and Automation, Changshu Institute of Technology, Jiangsu, Suzhou, 215000, China; [2] School of Electronic Information Engineering, Suzhou Vocational University, Jiangsu, Suzhou, 215000, China; [3] College of Applied Science and Technology, Beijing Union University, Beijing, 100101, China

第一机构：School of Electrical Engineering and Automation, Changshu Institute of Technology, Jiangsu, Suzhou, 215000, China

会议论文集：Proceedings of 2024 International Conference on Smart Electrical Grid and Renewable Energy, SEGRE 2024 - Volume 1

会议日期：August 9, 2024 - August 12, 2024

会议地点：Suzhou, China

语种：英文

外文关键词：DC-DC converters - Equivalent circuits - Zero voltage switching

摘要：In this paper, an unbalanced pulse-width modulation (UPWM) strategy for a semi-dual-bridge resonant converter (SDBRC) is proposed, utilizing minimizing current trajectory (MCT) control to reduce conduction loss and improve the operation efficiency of the SDBRC. Firstly, the UPWM strategy is proposed and the optimal operation mode is selected. All switches of the converter with the optimal mode can work in zero-voltage switching (ZVS), even at a voltage gain of 0.5. Next, an equivalent circuit of the converter is proposed employing the Fundamental Harmonics Approximation (FHA) approach. Furthermore, the resonant current and power formulas are derived, and MCT control is performed to minimize the resonant current. Finally, the theoretical analysis are validated through a series of simulations and experiments. ? The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.