Original scientific paper
https://doi.org/10.1080/00051144.2019.1578915
Analysis and design of a high gain non-isolated zero current switching bidirectional DC–DC converter for electric vehicles
Veera Venkata Subrahmanya Kumar Bhajana
; Regional Innovation Centre for Electrical Engineering, University of West Bohemia, Pilsen, Czech Republic
Pavel Drabek
; Regional Innovation Centre for Electrical Engineering, University of West Bohemia, Pilsen, Czech Republic
Rajesh Thumma
; Department of Electronics and Communication Engineering, Anurag Group of Institutions, Hyderabad, India
Abstract
This paper presents a dual inductor based current-fed bidirectional non-isolated DC–DC converter for energy storage applications. The main idea of this converter is to achieve a higher voltage conversion ratio by obtaining the operation of zero current switching. The proposed soft-switching bidirectional DC–DC converter reduces the turn-off switching losses with the aid of auxiliary network, where, the auxiliary network comprised with the resonant inductor and the resonant capacitor. This converter operates under two different operating modes such as a boost (discharge) and buck (charge) modes. In both the modes of converter operations, the IGBTs are operating under zero current turn-off in order to minimize the switch turn-off losses and to improve the efficiency of the converter. The principle of the operations and its theoretical analysis are validated by the experimental results using a 300W (50 V/250 V) converter system.
Keywords
DC–DC; high gain; ZCS; bidirectional DC–DC converter (BDC); non-isolated
Hrčak ID:
239765
URI
Publication date:
26.2.2019.
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