An Inductor-Based and Capacitor-Free Bipolar Pulse Converter with Overvoltage Protection

Jianzhi Xu; Xingjian Yang; Hui Zhao; Jian Qiu; Kefu Liu

doi:10.3390/wevj13050091

World Electric Vehicle Journal (May 2022)

An Inductor-Based and Capacitor-Free Bipolar Pulse Converter with Overvoltage Protection

Jianzhi Xu,
Xingjian Yang,
Hui Zhao,
Jian Qiu,
Kefu Liu

Affiliations

Jianzhi Xu: Department of Illuminating Engineering and Light Sources, Institute for Electric Light Sources, School of Information Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China
Xingjian Yang: Department of Illuminating Engineering and Light Sources, Institute for Electric Light Sources, School of Information Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China
Hui Zhao: Department of Illuminating Engineering and Light Sources, Institute for Electric Light Sources, School of Information Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China
Jian Qiu: Department of Illuminating Engineering and Light Sources, Institute for Electric Light Sources, School of Information Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China
Kefu Liu: Department of Illuminating Engineering and Light Sources, Institute for Electric Light Sources, School of Information Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China

DOI: https://doi.org/10.3390/wevj13050091
Journal volume & issue: Vol. 13, no. 5
p. 91

Abstract

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The inductor-based and capacitor-free bipolar pulse converter can be applied to electric vehicle charging and realize an efficient and reliable charging-control strategy. Inductor-based converters can avoid the converter failure caused by the failure of energy storage capacitors and improve the reliability. An overvoltage protection scheme based on active clamping topology is used to protect this converter when the load impedance is too large. This overvoltage protection can take effect in an extremely short time (~50 ns) with little energy wasted. Furthermore, mathematical analyses of the proposed topology are presented and simulations based on LTspice are made, showing the feasibility and reliability of this circuit. Moreover, calculation of the power loss on MOSFETs is presented. A 201 W prototype converter with an efficiency of 83% is presented, and experimental results show that the converter can work reliably. This manuscript also proves the feasibility and application prospect of using this current-source-based converter for EV charging.

Published in World Electric Vehicle Journal

ISSN: 2032-6653 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General): Transportation engineering
Website: http://www.mdpi.com/journal/wevj

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