Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Current Dynamic Analysis Based Open-Circuit Fault Diagnosis Method in Voltage-Source Inverter Fed Induction Motors

  • Tian, Lisi (School of Electrical and Power Engineering, China University of Mining and Technology) ;
  • Wu, Feng (Key Laboratory of Education Ministry for Image Processing and Intelligent Control, School of Automation, Huazhong University of Science and Technology) ;
  • Shi, Yi (Key Laboratory of Education Ministry for Image Processing and Intelligent Control, School of Automation, Huazhong University of Science and Technology) ;
  • Zhao, Jin (Key Laboratory of Education Ministry for Image Processing and Intelligent Control, School of Automation, Huazhong University of Science and Technology)
  • Received : 2016.11.14
  • Accepted : 2017.02.17
  • Published : 2017.05.20
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Abstract

This paper proposed a real-time, low-cost, fast transistor open-circuit fault diagnosis method for voltage-source inverter fed induction motors. A transistor open-circuit changes the symmetry of the inverter topology, leading to different similarities among three phase load currents. In this paper, dynamic time warping is proposed to describe the similarities among load currents. The proposed diagnosis is independent of the system model and needs no extra sensors or electrical circuits. Both simulation and experimental results show the high efficiency of the proposed fault diagnosis method.

Keywords

References

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