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Open-Circuit Fault Diagnosis of Dual Active Bridge DC-DC Converter With Extended-Phase-Shift Control | IEEE Journals & Magazine | IEEE Xplore

Open-Circuit Fault Diagnosis of Dual Active Bridge DC-DC Converter With Extended-Phase-Shift Control


Experimental results of fault detection control. (a) Open circuit fault on S_1. (b) Open circuit fault on S_2.

Abstract:

This paper proposes a simple and fast fault diagnosis strategy for bidirectional isolated dual-active-bridge dc-dc converter with the extended-phase-shift control to impr...Show More

Abstract:

This paper proposes a simple and fast fault diagnosis strategy for bidirectional isolated dual-active-bridge dc-dc converter with the extended-phase-shift control to improve reliability. The fault diagnosis strategy utilizes the average values of the voltage to quickly identify failures position and devices in either transistors or diodes without adding any hardware cost. First, two conditions are classified according to the direction of the inductor current on the primary side. Then, a comprehensive operation analysis during normal and faulty conditions is presented. Based on the characterization of open-circuit faults in diodes and transistors, open circuit faults diagnose strategy is derived and validated through both simulation and experimental test for different fault conditions.
Experimental results of fault detection control. (a) Open circuit fault on S_1. (b) Open circuit fault on S_2.
Published in: IEEE Access ( Volume: 7)
Page(s): 23752 - 23765
Date of Publication: 13 February 2019
Electronic ISSN: 2169-3536

Funding Agency:


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