The Fringing Effect in PM Electric Machines
- 1 January 1986
- journal article
- research article
- Published by Taylor & Francis in Electric Machines & Power Systems
- Vol. 11 (2) , 159-169
- https://doi.org/10.1080/07313568608909170
Abstract
To predict the fringing flux distribution along the axial length of a permanent magnet electric machine, a segmented permanent magnet model, in which magnets face a slotted and infinitely permeable boundary, is presented in this paper. By using the model and the method of Fourier expansion, the analytical solution to the fringing field problem can be easily determined. With the aid of the analytical results, the effective armature length for permanent magnet electric machines due to the axial extension of the magnet may be obtained.Keywords
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