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Design considerations of a direct drive brushless PM machine with concentrated windings

Lookup NU author(s): Dr Rafal Wrobel

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Abstract

The paper considers the optimal design of an open slot, external rotor torque motor. Combinations of pole and slot numbers are presented for which the winding factor is maximal and torque ripple is minimal. A detailed optimisation of the magnetic circuit design of the six most promising pole-slot configurations has been undertaken using the combination of a genetic algorithm (GA) and a parametric finite element model. These candidate motor versions are characterised by the same total slot area available for the winding and by equal volumes of permanent magnet. An alternative two-segment Halbach arrangement of the rotor permanent magnets is also proposed to further increase the volumetric torque density. © 2005 IEEE.


Publication metadata

Author(s): Wrobel R, Mellor PH

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2005 IEEE International Conference on Electric Machines and Drives

Year of Conference: 2005

Pages: 655-658

Online publication date: 05/12/2005

Publisher: IEEE

URL: https://doi.org/10.1109/IEMDC.2005.195793

DOI: 10.1109/IEMDC.2005.195793

Library holdings: Search Newcastle University Library for this item

ISBN: 0780389875


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