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Energies 2016, 9(9), 715; doi:10.3390/en9090715

Optimal Isolation Control of Three-Port Active Converters as a Combined Charger for Electric Vehicles

School of Electrical Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, Shandong, China
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Academic Editor: Michael Gerard Pecht
Received: 31 May 2016 / Revised: 16 August 2016 / Accepted: 30 August 2016 / Published: 6 September 2016
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Abstract

The three-port converter has three H-bridge ports that can interface with three different energy sources and offers the advantages of flexible power transmission, galvanic isolation ability and high power density. The three-port full-bridge converter can be used in electric vehicles as a combined charger that consists of a battery charger and a DC-DC converter. Power transfer occurs between two ports while the third port is isolated, i.e., the average power is zero. The purpose of this paper is to apply an optimal phase shift strategy in isolation control and provide a detailed comparison between traditional phase shift control and optimal phase shift control under the proposed isolation control scheme, including comparison of the zero-voltage-switching range and the root mean square current for the two methods. Based on this analysis, the optimal parameters are selected. The results of simulations and experiments are given to verify the advantages of dual-phase-shift control in isolation control. View Full-Text
Keywords: electric vehicles (EVs); three-port DC-DC converter; phase shift control electric vehicles (EVs); three-port DC-DC converter; phase shift control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ling, Z.; Wang, H.; Yan, K.; Gan, J. Optimal Isolation Control of Three-Port Active Converters as a Combined Charger for Electric Vehicles. Energies 2016, 9, 715.

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