1. Research on the typical fault modes of multi-category aviation transformer rectifier units
- Author
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CHEN Shuwen and YU Nalun
- Subjects
aviation transformer rectifier units ,failure mode and effects analysis ,fault tree analysis ,simulink sim-ulation ,fault modes ,Motor vehicles. Aeronautics. Astronautics ,TL1-4050 - Abstract
With the development of multi-electric aircraft, the researches on the structure improvement and fault di-agnosis of aviation transformer rectifier units (TRUs) are increasing, but research on the characteristics and effects of typical fault modes of different types of TRUs is lacked. Based on the analysis of TRUs structures, the failure mode and effects analysis (FMEA) and fault tree analysis (FTA) of TRUs are studied to determine typical failure modes of TRUs. Then, simulation models of various TRUs are established by Simulink, and the electrical signal characteristics of TRUs under different fault modes are analyzed and compared; the detailed fault modes of 8 TRUs are defined. The results show that the hard faults of TRUs have great impact on the system, and the high-pulse TRUs have better stability under fault modes and lower reliability.
- Published
- 2023
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