Fundamental-wave optimal control strategy of circulation of DAB DC-DC converter based on unified model of phase shift control

被引：0
作者：
Zeng J. [1 ]
Zhang C. [1 ]
Cao B. [2 ]
Yu X. [1 ]
Lan Z. [1 ]
Zou B. [1 ]
Wang T. [3 ]
Cao Y. [3 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou
[2] State Grid Changsha Power Supply Company, Changsha
[3] Zhuzhou National Engineering Research Center of Converters Co.，Ltd., Zhuzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | / 44卷 / 04期
基金：
中国国家自然科学基金;
关键词：
DC-DC converters; dual active bridge; fundamental-wave optimization; power factor; transmission efficiency; unified model;
D O I：
10.16081/j.epae.202312008
中图分类号：
学科分类号：
摘要：
For making full use of the capacity of dual active bridge（DAB） DC-DC converters，reducing reac⁃ tive power and improving working efficiency，a fundamental-wave optimal control strategy of circulation based on the unified model of phase shift control for the converter is proposed. All phase shift control modes of the converter are described uniformly by introducing fundamental phase shift ratio，and the unified model of AC voltage of full bridges and inductance current is established by using Fourier decomposition. The unified model reduces the complexity of multi-mode analysis of converters under multivariate control，and is suitable for all operating modes under different phase shift control with the universality. Based on frequency domain analysis and power factor angle，a unified mathematical model of converter transmission power and reactive power is built. On this basis，an optimal control strategy considering the fundamental-wave component of reactive power is proposed，and the conduction loss is modeled and analyzed. This strategy is simple and effective to reduce reactive power of the converter and improve system efficiency commendably，which is more conducive to the practical application of the project. An experimental platform is built to compare the power factor and conversion efficiency of the converter under the proposed fundamental-wave optimal control strategy and the conventional phase shift control modes. The simulative and experimental results verify the correctness of the theoretical analysis and the feasibility of the proposed control strategy. © 2024 Electric Power Automation Equipment Press. All rights reserved.
引用
收藏
页码：74 / 81
页数：7
相关论文
共 15 条
  • [1] PEI Zhongchen, SONG Xiaomin, LIU Chuang, Et al., Self-balancing isolated DC-DC converter for bipolar low voltage DC mi⁃ crogrid［J］, Electric Power Automation Equipment, 42, 5, pp. 47-53, (2022)
  • [2] MA Tengfeng, XIE Yunxiang, GUAN Yuanpeng, Et al., Open-circuit switching fault analysis and fault-tolerant control strate⁃ gy for isolated dual active bridge DC-DC converter considering parasitic parameters［J］, Electric Power Automation Equipment, 41, 8, pp. 149-155, (2021)
  • [3] ZHAO Yingying, HE Yigang, XING Zhikai, Et al., Open-circuit fault diagnosis method of DAB converter based on informa⁃ tion fusion and DRSN［J］, Automation of Electric Power Sys⁃ tems, 43, 2, pp. 112-118, (2023)
  • [4] LUO Deng, SHU Zeliang, LIN Hongjian, Et al., Minimizing leakage inductor current RMS control strategy of bidirectional three-level DC-DC converter［J］, Electric Power Automation Equipment, 38, 7, pp. 200-206, (2018)
  • [5] GU Qing, YUAN Liqiang, ZHAO Zhengming, Et al., Performance comprehensive optimization of dual active bridge DC-DC con⁃ verter based on triple phase shift control ［J］, Journal of Tsing⁃ hua University（Science and Technology, 59, 10, pp. 785-795, (2019)
  • [6] SHAO S, CHEN L L, SHAN Z Y，, Et al., Modeling and advanced control of dual-active-bridge DC-DC converter：a review ［J］, IEEE Transactions on Power Electronics, 37, 2, pp. 1524-1547, (2022)
  • [7] ZHOU Bingkai, YANG Xiaofeng, ZHANG Zhi, Et al., Multi-ob⁃ jective optimization control strategy for dual active bridge DC converters in energy routers［J］, Transactions of China Elec⁃ trotechnical Society, 35, 14, pp. 3030-3040, (2020)
  • [8] ZHANG Xun, WANG Guangzhu, WANG Ting, An optimized strategy based on backflow power of bi-directional dual-active-bridge DC-DC converters with dual-phase-shifting control［J］, Proceedings of the CSEE, 36, 4, pp. 100-106, (2016)
  • [9] YANG Xiangzhen, KONG Linghao, DU Yan, Et al., Optimiza⁃ tion method of current stress and backflow power of DAB converter based on dynamic matrix control［J］, Automation of Electric Power Systems, 45, 17, pp. 153-160, (2021)
  • [10] HUANG J, Et al., Unified triple-phase-shift control to minimize current stress and achieve full soft-switching of isolated bidirectional DC-DC converter［J］, IEEE Transactions on Industrial Electronics, 63, 7, pp. 4169-4179, (2016)
12