This paper presents a fault diagnosis method for switched reluctance machine (SRM) drive systems using a switching signal. This method can detect to the power transistor of power converter which has an open and short circuit. In addition, the information of the short fault switch can be recognized by using signals of the real switch and digital signal processor (DSP). The signals of DSP have some fault patterns, which are analyzed in the power converter, under the fault occurrence situation. The validity of the proposed method is verified by the simulation and experiment using the SRM drive system.
Acknowledgements This work was supported by the Korea Instituteof Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20171210201100) and “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (No. 20174030201660).
