Analytical calculation of armature-reaction field in surface-mounted permanent-magnet machines accounting for slots in stator and rotor

This paper presented a novel analytical method for calculating magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping. Firstly, flux density without slots and complex relative air-gap permeance of slotted air gap are derived from conformal transformation separately. Secondly, they are combined in order to obtain normalized flux density taking account into the slots effect. The finite element (FE) results confirmed the validity of the analytical method for predicting magnetic field and back electromotive force (BEMF) in the slotted air gap of spoke-type permanent-magnet machines. In comparison with FE result, the analytical solution yields higher peak value of cogging torque.

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Analytical calculation of armature-reaction field in surface-mounted permanent-magnet machines accounting for slots in stator and rotor

Cited by 2 publications

References 14 publications

Calculation and analysis of magnetic force and vibration in low-speed surface-mounted permanent magnet machines accounting for eccentric and concentric magnet poles

Calculation and analysis of magnetic force and vibration in low-speed surface-mounted permanent magnet machines accounting for eccentric and concentric magnet poles

A novel analytical calculation of magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping

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