Magnetic flux density distribution in axial flux machine cores

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Title: Magnetic flux density distribution in axial flux machine cores
Author(s): Hewitt, A. J.; Ahfock, A.; Suslov, Sergey A.
Abstract: A three-dimensional analytical model is presented to evaluate the magnetic flux density distribution in the core of an axial flux machine. The model predicts significantly higher flux density near the outer radius of the core than that at the inner radius. This has been confirmed by experimental test results. The model also predicts the presence of a curvature-related radial component in the magnetic flux density distribution. It is argued that if it can be established that eddy currents, induced by the tendency for the flux to flow radially, have sufficient shielding effect, then radial flux can be ignored and two-dimensional modelling can be used.
Publication type: Journal article
Source: IEE Proceedings: Electric Power Applications, Vol. 152, no. 2 (Mar 2005), pp. 292-296
Publication year: 2005
Keyword(s): Axial flux; Axial flux machine cores; Boundary conditions; Curvature-related radial component; Eddy currents; Electric contacts; Machine components; Machine cores; Machine theory; Magnetic cores; Magnetic flux; Magnetic flux density distribution; Magnetic shielding; Mathematical models; Numerical analysis; Shielding effect; Stators; Three-dimensional analytical models; Voltage measurement
Publisher: Institution of Engineering and Technology
ISSN: 1350-2352
Publisher URL: http://dx.doi.org/10.1049/ip-epa:20055039
Peer reviewed