Open Fault Detection and Tolerant Control for a Five Phase Inverter Driving System
Seung-Koo Baek,
Hye-Ung Shin,
Seong-Yun Kang,
Choon-Soo Park,
Kyo-Beum Lee
Affiliations
Seung-Koo Baek
Department of High-Speed Railroad Systems Research Center, Korea Railroad Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi-Do 437-757, Korea
Hye-Ung Shin
Department of Electrical and Computer Engineering, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon 443-749, Korea
Seong-Yun Kang
Department of Electrical and Computer Engineering, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon 443-749, Korea
Choon-Soo Park
Department of High-Speed Railroad Systems Research Center, Korea Railroad Research Institute, 176, Cheoldo Bangmulgwan-ro, Uiwang-si, Gyeonggi-Do 437-757, Korea
Kyo-Beum Lee
Department of Electrical and Computer Engineering, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon 443-749, Korea
This paper proposes a fault detection and the improved fault-tolerant control for an open fault in the five-phase inverter driving system. The five-phase induction machine has a merit of fault-tolerant control due to its increased number of phases. This paper analyzes an open fault pattern of one switch and proposes an effective fault detection method based upon this analysis. The proposed fault detection method using the analyzed patterns is applied in the power inverter. In addition, when the open fault occurs in the one switch of the induction machine driving system, the proposed fault-tolerant control method is used to operate the induction machine using the remaining healthy phases, after performing the fault detection method. Simulation and experiment results are provided to validate the proposed technique.
