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Open AccessArticle

Study and Implementation of a Two-Phase Interleaved Bidirectional DC/DC Converter for Vehicle and DC-Microgrid Systems

1
Department of Vehicle Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan
2
AcBel Polytech Inc., New Taipei City 251, Taiwan
3
Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 106, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Omar Hegazy
Energies 2015, 8(9), 9969-9991; https://doi.org/10.3390/en8099969
Received: 21 July 2015 / Revised: 26 August 2015 / Accepted: 8 September 2015 / Published: 14 September 2015
(This article belongs to the Special Issue Advances in Plug-in Hybrid Vehicles and Hybrid Vehicles)
The objective of this paper is to implement a two-phase, interleaved, bidirectional DC/DC converter topology with an improved voltage conversion ratio for electric vehicle (EV) and DC-microgrid systems. In this study, a two-phase interleaved charge-pump topology is introduced to achieve a high voltage conversion ratio with very simple control circuits. In discharge mode, the circuit topology acts as a voltage-multiplier boost converter to achieve a high step-up conversion ratio (48 V to 240 V). In charge mode, the circuit topology acts as a voltage-divider buck converter to achieve a high voltage step-down conversion ratio (240 V to 48 V). The circuit configuration, operating principle, steady-state analysis and the closed-loop control of the proposed converter are presented. Experiments conducted on a laboratory prototype with 500 W power-rating are presented to verify the effectiveness. The maximum efficiency levels in discharge and charge modes are about 97.7% and 98.4% respectively. View Full-Text
Keywords: interleaved bidirectional converter; improved voltage conversion ratio; vehicle and DC-microgrid systems interleaved bidirectional converter; improved voltage conversion ratio; vehicle and DC-microgrid systems
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MDPI and ACS Style

Lai, C.-M.; Lin, Y.-C.; Lee, D. Study and Implementation of a Two-Phase Interleaved Bidirectional DC/DC Converter for Vehicle and DC-Microgrid Systems. Energies 2015, 8, 9969-9991.

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