An Optimized Dual Phase Shift Modulation Strategy for Dual Active Bridge DC-DC Converter
Wang Renlong1, 2, Yang Qinxin1, 2, Cao Sunpen1, 2, Liu Peng1, 2, Li Shanhu1, 2
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300132 China; 2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology Tianjin 300132 China
Abstract：To reduce the reactive power and peak current with the dual active bridge DC-DC converter under conventional dual phase shift (DPS) at non-heavy load, an optimized dual phase shift (ODPS) modulation is proposed in this paper. Two freedom degrees of ODPS are redefined. Based on this condition, the mathematical model of transmission power, reactive power and current stress with ODPS modulation are established. Besides, the reactive power and current stress of ODPS and DPS under the same transmission power were compared and analyzed. By comparison and analysis, the reactive power and current stress at non-heavy load can be effectively reduced by ODPS modulation, and thus the system efficiency can be improved. At last, experimental results verify the excellent performance of transmission power with ODPS modulation and correctness of the theoretical analysis.
王仁龙, 杨庆新, 操孙鹏, 刘鹏, 李珊瑚. 一种优化电流应力的双有源桥式DC-DC变换器双重移相调制策略[J]. 电工技术学报, 2021, 36(zk1): 274-282.
Wang Renlong, Yang Qinxin, Cao Sunpen, Liu Peng, Li Shanhu. An Optimized Dual Phase Shift Modulation Strategy for Dual Active Bridge DC-DC Converter. Transactions of China Electrotechnical Society, 2021, 36(zk1): 274-282.
[1] De Doncker R W A A, Divan D M, Kheraluwala M H. A three-phase-soft-switched high-power-density DC/ DC converter for high-power applications[J]. IEEE Transactions on Industry Applications, 1991, 27(1): 63-73. [2] Kheraluwala M N,Gascoigne R W, Divan D M, et al.Performance characterization of a high-power dual active bridge DC-to-DC converter[J]. IEEE Transa- ctions on Industry Applications, 1992, 28(6): 1294-1301. [3] Freijedo F D, Rodriguez-Diaz E, Dujic D.Stable and passive high-power dual active bridge converters interfacing MVDC grids[J]. IEEE Transactions on Industrial Electronics, 2018, 65(12): 9561-9570. [4] Krismer F, Kolar J W.Efficiency-optimized high- current dual active bridge converter for automotive applications[J]. IEEE Transactions on Industrial Electronics, 2012, 59(7): 2745-2760. [5] 赵彪, 宋强, 刘文华, 等. 用于柔性直流配电的高频链直流固态变压器[J]. 中国电机工程学报, 2014, 34(25): 4295-4303. Zhao Biao, Song Qiang, Liu Wenhua, et al.High frequency-link DC solid state transformers for flexible DC distribution[J]. Proceedings of the CSEE, 2014, 34(25): 4295-4303. [6] Zhao Biao, Song Qiang, Liu Wenhua, et al.Next- generation multi-functional modular intelligent UPS system for smart grid[J]. IEEE Transactions on Industrial Electronics, 2013, 60(9): 3602-3618. [7] Bai Hua, Nie Ziling, Mi Chris. experimental com- parison of traditional phase-shift, dual-phase-shift, and model-based control of isolated bidirectional DC-DC converters[J]. IEEE Transactions on Power Electronics, 2010, 25(6): 1444-1449. [8] Wu K, de Silva C W, Dunford W G. Stability analysis of isolated bidirectional dual active full-bridge DC-DC converter with triple phase-shift control[J]. IEEE Transactions on Power Electronics, 2012, 27(4): 2007-2017. [9] Zhao B, Yu Q, Sun W.Extended-phase-shift control of isolated bidirectional DC-DC converter for power distribution in microgrid[J]. IEEE Transactions on Power Electronics, 2012, 27(11): 4667-4680. [10] Zhao B, Song Q, Liu W, et al.Current- stress-optimized switching strategy of isolated bidirectional DC-DC converter with dual-phase-shift control[J]. IEEE Transactions on Power Electronics, 2013, 60(10): 4458-4467. [11] Zhao B, Song Q, Liu W.Efficiency characterization and optimization of isolated bidirectional DC-DC converter based on dual-phase-shift control for DC distribution application[J]. IEEE Transactions on Power Electronics, 2013, 28(4): 1711-1727. [12] 于德, 付超, 王毅, 等. 隔离型双向直流变换器的最小回流功率移相控制方法[J]. 电工技术学报, 2017, 32(24): 126-138. Yu De, Fu Chao, Wang Yi, et al.The phase-shifted control method of isolated bidirectional DC-DC converter with minimum backflow power[J]. Transa- ctions of China Electrotechnical Society, 2017, 32(24): 126-138. [13] Bal S, Yelaverthi D B, Rathore A K, et al.Improved modulation strategy using dual phase shift modu- lation for active commutated current-fed dual active bridge[J]. IEEE Transactions on Power Electronics, 2018, 33(9): 7359-7375. [14] Hou Nie, Song Wensheng, Wu Mingyi.Minimumcurrent- stress scheme of dual active bridge DC-DC converter with unified phase-shift control[J]. IEEE Transa- ctions on Power Electronics, 2016, 31(12): 8552-8561. [15] Taylor A, Liu G, Bai H, et al.Multiple-phase-shift control for a dual active bridge to secure zero-voltage switching and enhance light-load performance[J]. IEEE Transactions on Power Electronics, 2018, 33(6): 4584-4588. [16] 安峰, 杨柯欣, 王嵩, 等. 基于模型前馈的双有源全桥DC-DC变换器电流应力优化方法[J]. 电工技术学报, 2019, 34(14): 2946-2956. An Feng, Yang Kexin, Wang Song, et al.Current stress optimized scheme with model-based feed- forward for dual-active-bridge DC-DC converters[J]. Transactions of China Electrotechnical Society, 2019, 34(14): 2946-2956. [17] 曾进辉, 孙志峰, 雷敏, 等. 双重移相控制的双主动全桥变换器全局电流应力分析及优化控制策略[J]. 电工技术学报, 2019, 34(12): 2507-2518. Zeng Jinhui, Sun Zhifeng, Lei Min, et al.Global current stress analysis and optimal control strategy of dualactive full bridge converter based on dual phase shift control[J]. Transactions of China Electro- technical Society, 2019, 34(12): 2507-2518. [18] Zhao Biao, Song Qiang, Liu Wenhua, et al.Overview of dual-active-bridge isolated bidirectional DC-DC converter for high-frequency-link power-conversion system[J]. IEEE Transactions on Power Electronics, 2014, 29(8): 4091-4106.
2021, Vol. 36 
