标题：Optimized Modulation Scheme for Dual Active Bridge DC-DC Converter
作者：Song, Chaochao; Chen, Alian; Chen, Jie; Du, Chunshui; Zhang, Chenghui
作者机构：[Song, Chaochao; Chen, Alian; Chen, Jie; Du, Chunshui; Zhang, Chenghui] Shandong Univ, Sch Control Sci & Engn, Jinan, Shandong, Peoples R China.
会议名称：33nd Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
会议日期：MAR 04-08, 2018
来源：THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018)
关键词：dual active bridge DC-DC converter; zero-voltage switching operation;; current stress; modulation scheme
摘要：To reduce the current stress and the switching losses of dual active bridge (DAB) DC-DC converter, this paper proposes an optimized modulation scheme based on triple-phase shift (TPS) control. Above all, a comprehensive analysis of operation modes is given. The transmission power and current stress model, as well as the zero-voltage-switching (ZVS) conditions are obtained by analyzing the waveforms and soft switching restrictions in each operation mode. On this basis, the optimized scheme is presented to enable the converter operate in minimum-current-stress condition while guaranteeing ZVS operation in the whole operating range. In this way, both the conduction losses and the switching losses will be reduced. Therefore, the performances of the converter will be improved especially when the system operates in light-load or high voltage conversion ratio states. Finally, experimental results verify the theoretical analysis and the effectiveness of the proposed scheme.