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



Zheng, Mingkai, Wen, Huiqing, Shi, Haochen, Hu, Yihua ORCID: 0000-0002-1007-1617, Yang, Yong and Wang, Yiwang
(2019) Open-Circuit Fault Diagnosis of Dual Active Bridge DC-DC Converter With Extended-Phase-Shift Control. IEEE ACCESS, 7. pp. 23752-23765.

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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.

Item Type: Article
Uncontrolled Keywords: Bidirectional DC-DC converter, extended-phase shift control, fault diagnosis, reliability
Depositing User: Symplectic Admin
Date Deposited: 26 Apr 2019 07:20
Last Modified: 19 Jan 2023 00:53
DOI: 10.1109/ACCESS.2019.2899133
Open Access URL: https://ieeexplore.ieee.org/document/8641123
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3038419