Design optimisation of ironless motors based on magnet selection


Autoria(s): Greaves, Matthew C.; Walker, Geoffrey R.; Walsh, Bernard B.
Data(s)

2001

Resumo

This paper considers the design of a radial flux permanent magnet ironless core brushless DC motor for use in an electric wheel drive with an integrated epicyclic gear reduction. The motor has been designed for a continuous output torque of 30 Nm and peak rating of 60 Nm with a maximum operating speed of 7000 RPM. In the design of brushless DC motors with a toothed iron stator the peak air-gap magnetic flux density is typically chosen to be close to that of the remanence value of the magnets used. This paper demonstrates that for an ironless motor the optimal peak air-gap flux density is closer to the maximum energy product of the magnets used. The use of a radial flux topology allows for high frequency operation and can be shown to give high specific power output while maintaining a relatively low magnet mass. Two-dimensional finite element analysis is used to predict the airgap flux density. The motor design is based around commonly available NdFeB bar magnet size

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/63584/

Publicador

Australasian Committe for Power Engineering

Relação

http://eprints.qut.edu.au/63584/1/104_Greaves_AUPEC01.pdf

http://itee.uq.edu.au/~aupec/aupec01/104_Greaves_AUPEC01paper%20revised.pdf

Greaves, Matthew C., Walker, Geoffrey R., & Walsh, Bernard B. (2001) Design optimisation of ironless motors based on magnet selection. In Proceedings of the Australasian Universities Power Engineering Conference (AUPEC-2001) : millennium power vision, Australasian Committe for Power Engineering, Perth, WA, pp. 216-220.

Direitos

Copyright 2001 [please consult the author]

Fonte

School of Electrical Engineering & Computer Science; Science & Engineering Faculty

Palavras-Chave #090205 Hybrid Vehicles and Powertrains #090603 Industrial Electronics #090607 Power and Energy Systems Engineering (excl. Renewable Power) #air gaps #brushless DC motors #DC motor drives #hybrid electric vehicles #magnetic flux #permanent magnet motors #stators
Tipo

Conference Paper