Improved analytical modelling of rotor eddy current loss in brushless machines equipped with surface-mounted permanent magnets

By Z. Q. Zhu, K. Ng, N. Schofield, David Howe. 2004

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Analytical Solution of Air-Gap Field in Permanent-Magnet Motors Taking Into Account the Effect of Pole Transition Over Slots (2007, background): “For example, it can be used to estimate the back electromotive force (EMF) and the inductance of the stator windings [20], the frequency spectra of the magnetic induced forces [21] which represent the magnetically induced vibration sources, the running torque, and some other aspects of the PM motor ”
Theory and design of fractional-slot multilayer windings (2011, background): “4) Rotor Losses: Rotor losses in a PM machine can cause a considerable reduction of the overall drive performance [14], [16]–[21], particularly in machines where the PMs are not segmented or in machines with a solid iron rotor yoke.”
An Accurate Subdomain Model for Magnetic Field Computation in Slotted Surface-Mounted Permanent-Magnet Machines (2010, methodology): “The eddy current reaction field was considered by a 5-layer model in [45], [46], while in [47] a 6-layer model was proposed by introducing another layer for winding other than a current sheet for winding as in previous papers.”