Zhou, R. and Chong, B. orcid.org/0000-0001-5977-7197 (2025) A Novel Isolated Connector for Bidirectional Direct V2V Charging Using Onboard Chargers. In: Proceedings of 2024 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2024. 2024 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), 26-29 Nov 2024, Naples, Italy. Institute of Electrical and Electronics Engineers (IEEE) ISBN 979-8-3503-7390-5
Abstract
This paper presents a novel isolated connector designed for battery charging between two electric vehicles (EVs), To reduce costs and eliminate the need for a complex interfacing, it utilises the onboard chargers of both EVs while requiring two additional capacitors and a high frequency transformer (HFT). With the latter, the proposed connector provides gal-vanic isolation for safe vehicle-to-vehicle (V2V) charging process. Because it involves a single-stage power conversion, the losses in the power devices are potentially low compared to other isolated topologies. In each charging cycle, not all devices of the existing chargers are utilised. Different set of switches can be selected for different charging cycle allowing each switch to experience an idling state, thus minimising its voltage and current stresses. The voltage regulation can be done in a similar way to a non-isolated pulse-width-modulation (PWM) controlled DC-DC converters making the conventional control schemes can still be applied. This paper describes in detail the operating principles of the connector, the derivation of its input-output voltage relationship and its application in charging the lithium-ion battery packs of either EVs. MATLAB/Simulink simulation results validate its functionality, demonstrating well-controlled transient performance. This connector has also been tested with the operation when constant-current control is required for charging a battery under different initial states-of-charge (SOCs).
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | vehicle-to-vehicle (V2V) charging, EV charger, bidirectional charger |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Jun 2025 09:38 |
Last Modified: | 02 Jun 2025 09:38 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Identification Number: | 10.1109/esars-itec60450.2024.10819874 |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:227248 |