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Design and Performance of a Segmented Stator Permanent Magnet Alternator for Aerospace

Lookup NU author(s): Professor Nick BakerORCiD, Daniel Smith, Dr Mehmet KulanORCiD

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2018.

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Abstract

In this paper, a permanent magnet alternator which presently relies on magnetic slot wedges is redesigned to give lower iron loss. The new segmented stator design is used as the basis for a validated loss study – comparing bonded lamination stacks with those held together with a punched notch. Segmentation is shown to improve the production process, reduce losses and remove the need for wedges, whilst not significantly altering the acoustic performance. In the first series of prototypes, however, where notching is used to secure lamination packs, the process is shown to have adversely affected material properties of the nickel iron laminations and overall measured losses increased. In the second prototype, with thinner laminations and glued stacks, iron loss predictions and measurement agree and are less than the present slot wedge design.

Publication metadata

Author(s): Baker NJ, Smith JB, Kulan MC, Turvey S

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Energy Conversion

Year: 2018

Volume: 33

Issue: 1

Pages: 40-48

Print publication date: 01/03/2018

Online publication date: 14/08/2017

Acceptance date: 08/08/2017

Date deposited: 29/08/2017

ISSN (print): 0885-8969

ISSN (electronic): 0885-8969

Publisher: IEEE

URL: https://doi.org/10.1109/TEC.2017.2739201

DOI: 10.1109/TEC.2017.2739201

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