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A fast on-board integrated battery charger for EVs using an asymmetrical six-phase machine

Subotic, I and Levi, E and Bodo, N (2015) A fast on-board integrated battery charger for EVs using an asymmetrical six-phase machine. In: 2014 IEEE Vehicle Power and Propulsion Conference (VPPC) . pp. 1-6. (2014 IEEE Vehicle Power and Propulsion Conference (VPPC), 27th - 30th Oct 2014, Coimbra).

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Abstract

The paper considers a novel fast charging topology for electric vehicles (EVs). Instead of being made as a separate unit, the proposed on-board charger utilizes power electronics components that already exist inside the vehicle, namely an asymmetrical six-phase propulsion motor and a six-phase inverter. The charger can operate at unity power factor, and is capable of vehicle-to-grid (V2G) operation as well. Additional degrees of freedom of the six-phase machine are employed in order to transfer a part of excitation from the torque producing to non-torque/flux producing plane of the machine. Consequently, electromagnetic torque is not produced in the machine during the charging/V2G process, so that the rotor does not have to be mechanically locked. A theoretical analysis of the operating principles is reported, and simulation results are given for both charging and V2G mode of operation.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics and Electrical Engineering
Publisher: IEEE
Date Deposited: 12 Aug 2015 13:16
Last Modified: 12 Aug 2015 13:16
DOI or Identification number: 10.1109/VPPC.2014.7006996
URI: http://researchonline.ljmu.ac.uk/id/eprint/1834

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