Lookup NU author(s): Dr James Widmer,
Dr Richard Martin,
Professor Barrie Mecrow
This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2016.
For re-use rights please refer to the publisher's terms and conditions.
There are benefits if copper windings are replaced with aluminum in applications which are cost and mass sensitive, such as automotive traction; these include the low cost of aluminum, low mass of aluminum and the ease of motor recycling at end of life. However the relatively low electrical conductivity of aluminum compared to copper needs to be overcome. Pre-compressed motor coils have been shown to produce very high fill factors (>75%), reducing DC winding losses, therefore enabling the use of aluminum conductors. However the single stranded conductors used can be prone to high AC losses due to skin and proximity effects. Therefore a method of manufacture of pre-compressed coils made from stranded / Litz wire is needed, allowing AC losses to be reduced to low levels. This paper describes the development and test of stranded, pre-compressed aluminum coils which have been developed for use in an automotive traction application.
Author(s): Widmer JD, Martin R, Mecrow BC
Publication type: Article
Publication status: Published
Journal: IEEE Transactions on Industry Applications
Print publication date: 01/05/2016
Online publication date: 11/02/2016
Acceptance date: 09/11/2015
Date deposited: 20/11/2015
ISSN (print): 0093-9994
ISSN (electronic): 1939-9367
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