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

Zhixiang Ling, Hui Wang, Kun Yan and Jinhao Gan
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Zhixiang Ling: School of Electrical Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, Shandong, China
Hui Wang: School of Electrical Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, Shandong, China
Kun Yan: School of Electrical Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, Shandong, China
Jinhao Gan: School of Electrical Engineering, Shandong University, 17923 Jingshi Road, Jinan 250061, Shandong, China

Energies, 2016, vol. 9, issue 9, 1-15

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.

Keywords: electric vehicles (EVs); three-port DC-DC converter; phase shift control (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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