Fault Diagnosis and Tolerant Method of Open-circuit Fault for Triple Active-bridge DC-DC Converter

被引：0
|
作者：
Yang W. [1 ]
Ma J. [2 ]
Zhu M. [3 ]
Hu C. [1 ]
Wen S. [3 ]
Liu B. [1 ]
机构：
[1] School of Electrical Engineering and Automation, Anhui University, Anhui Province, Hefei
[2] College of Smart Energy, Shanghai Jiao Tong University, Minhang District, Shanghai
[3] Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiao Tong University, Minhang District, Shanghai
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 06期
基金：
中国国家自然科学基金;
关键词：
distributed DC system; fault-diagnosis; fault-tolerant operation; open-circuit fault; triple active-bridge (TAB) converter;
D O I：
10.13334/j.0258-8013.pcsee.222419
中图分类号：
学科分类号：
摘要：
As a typical multiport converter, triple active-bridge (TAB) DC-DC converter is widely used in distributed DC system. The open-circuit fault (OCF) of TAB seriously threatens the system safety operation. This article proposed an OCF diagnosis and tolerant method for TAB converter to reduce the impact of OCF. Firstly, normal mode and OCF mode of TAB are analyzed. Base on the analysis, the average value of the midpoint voltage of each bridge arm can be used as an OCF diagnosis indicator. The DC bias of transformer winding current are eliminated by blocking the gate-driving signal of the faulty bridge arm. Then the blocking mode is analyzed. Finally, fault-tolerant operation is achieved by regulating the phase shift angle range. If the OCF occurs on the DC bus side, the phase shift angle is adjusted to ensure that the DC bus still absorbs power. If the OCF occurs on the energy storage side, the phase shift angle is adjusted to ensure that the energy storage cut off. The OCF can be diagnosed accurately and quickly according to the experimental results. The impact of OCF can be reduced, which promotes the reliability of TAB converters. ©2024 Chin.Soc.for Elec.Eng.
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页码：2374 / 2385
页数：11
相关论文
共 27 条
  • [1] ZHOU Xiaoxin, LU Zongxiang, LIU Yingmei, Development models and key technologies of future grid in China[J], Proceedings of the CSEE, 34, 29, pp. 4999-5008, (2014)
  • [2] Jianjun MA, Miao ZHU, CAI Xu, DC substation for DC grid-Part I ： comparative evaluation of DC substation configurations[J], IEEE Transactions on Power Electronics, 34, 10, pp. 9719-9731, (2019)
  • [3] ZHANG Zhigang, KANG Chongqing, Challenges and prospects for constructing the new-type power system towards a carbon neutrality future[J], Proceedings of the CSEE, 42, 8, pp. 2806-2818, (2022)
  • [4] SONG Qiang, ZHAO Biao, LIU Wenhua, An overview of research on smart DC distribution power network[J], Proceedings of the CSEE, 33, 25, pp. 9-19, (2013)
  • [5] WANG Qingsong, ZHU Han, DENG Fujin, Simple extended-phase-shift control for direct current electric spring with parallel topology[J], Proceedings of the CSEE, 42, 3, pp. 1002-1014, (2022)
  • [6] Jianjun MA, Miao ZHU, Yunwei LI, Monopolar fault reconfiguration of bipolar half bridge converter for reliable load supply in DC distribution system[J], IEEE Transactions on Power Electronics, 37, 9, pp. 11305-11318, (2022)
  • [7] BISWAS I, KASTHA D, BAJPAI P, Small signal modeling and decoupled controller design for a triple active bridge multiport DC-DC converter[J], IEEE Transactions on Power Electronics, 36, 2, pp. 1856-1869, (2021)
  • [8] NIAN Heng, YE Yuhua, Model predictive control of three-port isolated bidirectional DC-DC converter[J], Transactions of China Electrotechnical Society, 35, 16, pp. 3478-3488, (2020)
  • [9] LIU Bei, SHUAI Zhikang, XIAO Fan, Simplified analysis model and optimal control strategy of triple active bridge converter[J], Transactions of China Electrotechnical Society, 36, 11, pp. 2394-2407, (2021)
  • [10] ZHAO Chuanhong, ROUND S D, KOLAR J W．, An isolated three-port bidirectional DC-DC converter with decoupled power flow management[J], IEEE Transactions on Power Electronics, 23, 5, pp. 2443-2453, (2008)
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