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An Integrated On-Board Battery Charger with a Nine-Phase PM Machine

Levi, E and Bodo, N and Subotic, I and Espina, J and Empringham, L and Johnson, M (2016) An Integrated On-Board Battery Charger with a Nine-Phase PM Machine. In: IEEE 42th Annual Meeting of the Industrial Electronics Society IECON . (IEEE 42th Annual Meeting of the Industrial Electronics Society IECON, 23-26th October 2016, Florence Italy).

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Abstract

A fully integrated on-board battery charger for electrical vehicles (EVs) has been developed recently using a nine-phase machine. All the components used for propulsion are employed in the charging process, no additional components are required, and there is no need for hardware reconfiguration between charging and propulsion modes of operation. The proposed solution can be connected directly to single-phase or three-phase grid to perform charging, so that the expensive off-board charger infrastructure is not needed. The only requirement is to use a nine-phase machine in combination with a nine-phase inverter in the powertrain of the EV. This however inevitably brings in further advantages in the propulsion mode, such as increased fault tolerance and the current subdivision into more phases. The benefits of the topology, originally developed for an induction machine, make it interesting for further investigation. Therefore, the performance of the charger is examined here using a permanent magnet synchronous machine (PMSM). The results show that the charger topology is applicable to other types of synchronous machines and is, even more importantly, independent of the angular spatial shift between the individual three-phase windings of the nine-phase machine’s stator. The results are comparable with those obtained using an induction machine and confirm the viability of the solution in conjunction with the PMSM as a propulsion motor.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Battery chargers, electric vehicles, integrated on-board charger, multiphase machines
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics and Electrical Engineering
Publisher: IEEE
Date Deposited: 03 Nov 2016 12:41
Last Modified: 07 Sep 2017 13:02
URI: http://researchonline.ljmu.ac.uk/id/eprint/4732

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