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Single-Switch DC–DC Converter With Fault-Tolerant Capability Under Open- and Short-Circuit Switch Failures

Abstract : This paper proposes fault-tolerant (FT) operation of a single-switch dc-dc converter under a switch failure. In order to improve the reliability in critical applications, FT operation is mandatory to guarantee service continuity. The FT operation of a power system can be performed in three steps: fault diagnosis (detection and identification) and remedial actions. In the case of a switch failure, suitable fault detection is essential to avoid its propagation to the whole system. This study is based on a fast and efficient open-and short-circuit switch fault diagnosis. Both types of switch failure can be detected, identified, and handled in real time by implementing fault diagnosis and reconfiguration strategies on a field-programmable gate array target. No additional sensor is required to perform the fault detection. A redundant switch and a bidirectional switch are needed for converter reconfiguration in postfault operation. The results of hardware-in-the-loop and experimental tests, which all confirm the good performances of the proposed approach, are presented and discussed.
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https://hal.univ-lorraine.fr/hal-01383785
Contributor : Green Ul <>
Submitted on : Wednesday, October 19, 2016 - 11:20:55 AM
Last modification on : Monday, May 17, 2021 - 11:18:01 AM

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Ehsan Jamshidpour, Philippe Poure, Eskandar Gholipour, Shahrokh Saadate. Single-Switch DC–DC Converter With Fault-Tolerant Capability Under Open- and Short-Circuit Switch Failures. IEEE Transactions on Power Electronics, Institute of Electrical and Electronics Engineers, 2015, 30 (5), pp.2703-2712. ⟨10.1109/TPEL.2014.2342878⟩. ⟨hal-01383785⟩

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