PWM plus phase shift control strategy for dual-active-bridge DC-DC converter in electric vehicle charging/discharging system

Author

Dongzhi Wang ; Weige Zhang ; Jingxin Li

Author_Institution

Nat. Active Distrib. Network Technol. Res. Center (NANTEC), Beijing Jiaotong Univ., Beijing, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

5

Abstract

The dual-active-bridge(DAB) converter is ideally suited for high-power dc-dc convertion, especially in electric vehicles charging/discharging system. However, it has the drawback of high circulating currents at light load. This paper analyzes the pulse width modulation plus phase shift(PWMPS) for DAB in whole operation range and proposed a new reactive power-optimized control mode. The PWMPS has two degree of freedom to control the transferring power, which can improve the performance of the DAB converter than conventional modulation strategy (CMS). The experimental results show that the proposed method can enhance the overall efficiency.

Keywords

DC-DC power convertors; PWM power convertors; electric vehicles; power control; CMS; DAB converter; PWM plus phase shift control strategy; PWMPS; conventional modulation strategy; dual-active-bridge DC-DC converter; electric vehicle charging/discharging system; power control; pulse width modulation plus phase shift; reactive power-optimized control mode; Inductance; Power generation; Pulse width modulation; Reactive power; Switches; Voltage control; dc-dc convertion; dual-active-bridge(DAB) converter; pulse width modulation plus phase shift(PWMPS); reactive power optimization algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6940986

Filename

6940986