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Various design techniques to reduce cogging torque by controlling energy variation in permanent magnet motors

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5 Author(s)
Sang-Moon Hwang ; Sch. of Mech. Eng., Pusan Nat. Univ., South Korea ; Jae-Boo Eom ; Yoong-Ho Jung ; Deug-Woo Lee
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Using energy method, this paper analytically reveals that the cogging torque can be reduced by controlling NLth harmonic components of the square of airgap permeance function and flux density function, where NL denotes the least common multiple of number of poles and number of slots. As for design tools, it introduces various design techniques to reduce cogging torque with analytical formulation and FEM examples

Published in:
Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 4 )

Date of Publication: Jul 2001

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