Analysis and Implementation of a Novel Bidirectional DC-DC Converter

A novel bidirectional dc-dc converter is presented in this paper. The circuit configuration of the proposed converter is very simple. The proposed converter employs a coupled inductor with same winding turns in the primary and secondary sides. In step-up mode, the primary and secondary windings of t...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2012-01, Vol.59 (1), p.422-434
Main Authors: Yang, Lung-Sheng, Liang, Tsorng-Juu
Format: Article
Language:English
Subjects:
Bidirectional
Bidirectional dc-dc converter
Buck converters
Capacitors
Charge
Circuits
Converters
coupled inductor
Equations
Inductors
Steady-state
Stress
Voltage gain
Winding
Windings
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Summary:A novel bidirectional dc-dc converter is presented in this paper. The circuit configuration of the proposed converter is very simple. The proposed converter employs a coupled inductor with same winding turns in the primary and secondary sides. In step-up mode, the primary and secondary windings of the coupled inductor are operated in parallel charge and series discharge to achieve high step-up voltage gain. In step-down mode, the primary and secondary windings of the coupled inductor are operated in series charge and parallel discharge to achieve high step-down voltage gain. Thus, the proposed converter has higher step-up and step-down voltage gains than the conventional bidirectional dc-dc boost/buck converter. Under same electric specifications for the proposed converter and the conventional bidirectional boost/buck converter, the average value of the switch current in the proposed converter is less than the conventional bidirectional boost/buck converter. The operating principle and steady-state analysis are discussed in detail. Finally, a 14/42-V prototype circuit is implemented to verify the performance for the automobile dual-battery system.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2011.2134060