Common Switch Fault Diagnosis for Two-Stage DC-DC Converters Used in Energy Harvesting Applications - Université de Lorraine Access content directly
Journal Articles Electronics Year : 2019

Common Switch Fault Diagnosis for Two-Stage DC-DC Converters Used in Energy Harvesting Applications

Abstract

This paper proposes a new Unified Switch Fault Diagnosis (UFD) approach for two-stage non-isolated DC-DC converters used in energy harvesting applications. The proposed UFD is compared with a switch fault diagnosis consisting of two separate fault detection algorithms, working in parallel for each converter. The proposed UFD is simpler than the two parallel fault diagnosis methods in realization. Moreover, it can detect both types of switch failures, open circuit and short circuit switch faults. It can also be used for any two-stage non-isolated DC-DC converters based on two single switch converters, no matter the converter circuits in each stage. Some selected simulation and Hardware-in-the-Loop (HIL) experimentation results confirm the validity and efficiency of the proposed UFD. Also, the proposed UFD is applied successfully for fault-tolerant operation of a buck/buck–boost two-stage converter with synchronous control and a redundant switch.
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Dates and versions

hal-03225275 , version 1 (08-02-2022)

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Ehsan Jamshidpour, Philippe Poure, Shahrokh Saadate. Common Switch Fault Diagnosis for Two-Stage DC-DC Converters Used in Energy Harvesting Applications. Electronics, 2019, 8 (3), pp.293. ⟨10.3390/electronics8030293⟩. ⟨hal-03225275⟩
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