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Optimization Design of a Segmented Halbach Permanent-Magnet Motor Using an Analytical Model

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2 Author(s)
Markovic, M. ; Integrated Actuators Lab. (LAI), Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne ; Perriard, Y.

We present an optimization design of a slotless permanent-magnet brushless dc motor (400 W, 6000 rpm), with two-segment Halbach arrays. The optimization is based on a motor analytical model which is obtained by solving the magnetic scalar potential using the Fourier series. We show that the iron-cored Halbach configuration is better than the classical one and that the air-cored Halbach configuration is even better. This means that the rotor iron can be completely omitted. We verify the results by using the finite-element method.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 7 )