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2661724 
Journal Article 
Influence of asymmetries in stator back iron of PMS motors to the level of cogging torque components 
Gasparin, L; Fiser, R 
2011 
87 
3 
53-56 
WOS:000287978700014 
A study presents a dependence of the level and harmonic structure of a cogging torque in PM motors to interlocks and notches in stator back iron, which are standard methods for stator lamination stacking. It has been established that technologies for stacking lamination packs are causing local saturation peaks in back iron which give rise to additional cogging torque harmonic components and consequently increase the total cogging torque. The estimation of the substitutive relative permeability of the interlock soft magnetic material is also discussed. 
cogging torque; finite-element method; harmonic components; PM synchronous motor