An open-circuit fault diagnosis for interleaved boost converter with coupled inductors in fuel cell application
2023 25TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS, EPE'23 ECCE EUROPE(2023)
摘要
Interleaved boost converters with coupled inductors are a suitable fault-tolerant topology for fuel cell electric vehicles (FCEVs). However, the reliability of these converters has been a major concern, and the fault diagnosis control remains a challenge due to phase coupling. In this paper, a simple signal-based diagnostic method is proposed. It is mainly based on the average of the inductor currents to detect and identify the switch open-circuit fault. The proposed method is implemented on Matlab / Simulink and validated on Typhoon Hardware-in-the-loop (HIL) in closed-loop. The fault could be detected in less than two switching periods. A post-fault reconfiguration is applied to maintain optimal operation of the healthy phases. This fault-tolerant control is easy to implement and demonstrates great robustness in the case of load variations.
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关键词
Interleaved converters,boost,coupled inductors,Fuel Cell Electric Vehicle (FCEV),fault-tolerant control,open switch fault
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