Novel Modulation of Isolated Bidirectional DC-DC Converter for Energy Storage Systems

作     者：Nguyen Anh Dung Chiu, Huang-Jen Lin, Jing-Yuan Hsieh, Yao-Ching Chen, Hui-Ting Zeng, Bo-Xiang 

作者机构：Natl Taiwan Univ Sci & Technol Dept Elect & Comp Engn Taipei 10607 Taiwan Natl Sun Yat Sen Univ Dept Elect Engn Kaohsiung 80424 Taiwan 

出 版 物：《IEEE TRANSACTIONS ON POWER ELECTRONICS》 (动力电子学汇刊)

年 卷 期：2019年第34卷第2期

页      面：1266-1275页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：Ministry of Science and Technology  Taiwan [MOST 106-2221-E-011-091-MY3] 

主　　题：Bidirectional converter frequency modulation phase-shift algorithm three-phase wye-delta converter 

摘      要：In this study, a novel modulation of an isolated three-phase bidirectional dc-dc converter is proposed for the high-voltage input power supply to low-voltage output energy storage systems. The wye-delta connection of the transformers is employed to reduce the voltage stress at the high side and the current stress at the low side of the transformers. Frequency control allows the output voltage regulation, and a phase-shift algorithm with a resonant tank is proposed following with the switching frequency to reduce the frequency range with the specific power. Furthermore, the zero-voltage-switching condition for all MOSFETs in the entire power range, which is the major restriction of a single-phase converter, is also discussed in this paper. The three-phase wye-delta converter significantly reduces the ripple of inductor current compared with that of a single-phase converter. A 2 kW prototype converter was built and successfully tested to verify the capability of such control modulation.