Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

Andrei Blinov, Roman Kosenko, Andrii Chub and Volodymyr Ivakhno
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Andrei Blinov: Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 13513 Tallinn, Estonia
Roman Kosenko: Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 13513 Tallinn, Estonia
Andrii Chub: Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 13513 Tallinn, Estonia
Volodymyr Ivakhno: Department of Industrial and Biomedical Electronics, Kharkiv Polytechnic Institute, National Technical University, 61002 Kharkiv, Ukraine

Energies, 2019, vol. 12, issue 16, 1-14

Abstract: Reliable and predictable operation of power electronics is of increasing importance due to continuously growing penetration of such systems in industrial applications. This article focuses on the fault-tolerant operation of the bidirectional secondary-modulated current-source DC–DC converter. The study analyzes possible topology reconfigurations in case an open- or short-circuit condition occurs in one of the semiconductor devices. In addition, multi-mode operation based on topology-morphing is evaluated to extend the operating range of the case study topology. The influence of post-failure modes on the functionality and performance is analyzed with a 300 W converter prototype. It is demonstrated that failure of one transistor in the current-source side can be mitigated without dramatic loss in the efficiency at maximum power, while preserving bidirectional operation capability.

Keywords: DC–DC power converters; isolated converter; reliability; fault tolerant control; bidirectional power flow (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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