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Onboard Integrated Battery Charger for EVs Using an Asymmetrical Nine-Phase Machine

Subotic, I, Bodo, N, Levi, E and Jones, M (2015) Onboard Integrated Battery Charger for EVs Using an Asymmetrical Nine-Phase Machine. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 62 (5). pp. 3285-3295. ISSN 0278-0046

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This paper considers an integrated onboard charger for electric vehicles that incorporates an asymmetrical
nine-phase machine and an inverter into the charging
process. The charging is from three-phase mains, and it
employs exclusively the power electronic components that
already exist on board the vehicle and that are mandatory
for the propulsion. No new elements are introduced. Moreover, the charging is achieved without any hardware
reconfiguration since the existing elements and their
connections are not altered during the transfer from propulsion to the charging mode. Instead, the operating principle is based on additional degrees of freedom that exist in nine-phase machines. These degrees of freedom are
employed to avoid electromagnetic torque production in
the machine during the charging process, although currents
flow through its stator windings. The configuration operates with a unity power factor and is capable of vehicle
to grid (V2G) operation as well. A detailed theoretical analysis is given, and the control for the charging/V2G and propulsion modes is discussed. Theoretical analysis is validated by experiments for charging, V2G, and propulsion
operating regimes.

Item Type: Article
Uncontrolled Keywords: 08 Information And Computing Sciences, 09 Engineering
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics & Electrical Engineering (merged with Engineering 10 Aug 20)
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Date Deposited: 12 Aug 2015 13:02
Last Modified: 04 Sep 2021 14:10
DOI or ID number: 10.1109/TIE.2014.2345341
URI: https://researchonline.ljmu.ac.uk/id/eprint/1657

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