A Diagnostic Method for Inverter Faults in Aviation VSCF System Based on Voltage Vector Diagram and Crossing Phase Reconfiguration

Zhanjun Huang, Xin Dong, Xianshuang Yao, An Zhang, Kang Hu, Xiaohua Chen

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The inverter of variable speed constant frequency system is the indispensable equipment to maintain the normal operation of avionics system. However, the open-circuit fault diagnosis of aeronautical complex intermediate-frequency inverter is always a thorny problem. To solve this problem, this paper creatively proposes a fault diagnosis algorithm. First, the average model is utilized to analyze the voltage and determine the fault phase. Secondly, the voltage vector diagram is attracted according to the Concordia transformer. According to the different centroid positions and radius ratios of the voltage vector diagram, the number of fault IGBTs and fault IGBT candidate pairs can be determined. Then, a new virtual phase is constructed according to the proposed reconfiguration method. Meanwhile, the average model is used to analyze the virtual phase. Finally, combining the analysis result of voltage vector diagram and virtual phase, the fault IGBT can be determined. Compared with the existing methods, the proposed method not only solves the problem that the fault characteristics of the aviation inverter are not obvious due to the complex structure, but also realizes the open-circuit fault diagnosis of the composite intermediate-frequency inverter without adding additional sensors. At last, the proposed method is verified to be feasible.

源语言英语
主期刊名2023 5th International Academic Exchange Conference on Science and Technology Innovation, IAECST 2023
出版商Institute of Electrical and Electronics Engineers Inc.
1051-1056
页数6
ISBN(电子版)9798350357738
DOI
出版状态已出版 - 2023
活动5th International Academic Exchange Conference on Science and Technology Innovation, IAECST 2023 - Hybrid, Guangzhou, 中国
期限: 8 12月 202310 12月 2023

出版系列

姓名2023 5th International Academic Exchange Conference on Science and Technology Innovation, IAECST 2023

会议

会议5th International Academic Exchange Conference on Science and Technology Innovation, IAECST 2023
国家/地区中国
Hybrid, Guangzhou
时期8/12/2310/12/23

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