Pole Arc Skewing Analysis of Synchronous Reluctance Machine Using Discrete Method Combined with Winding Function Approach.

The paper investigates the effect of pole arc skewing in synchronous reluctance machine on its torque ripple. To do this, the machine's reluctances are calculated by using winding function approach (WFA). A numerical-based method is proposed for modeling the machine's dynamic equations. The effect of rotor skewing and the winding type (single-layer or double layer) on the machine's behavior and torque ripple are investigated. The results show that skewing the rotor is significantly effective in double-layer winding case and it is not a proper idea for machine with single-layer winding. The proposed method is capable of studying the voltage-fed machine's behavior which is common in reality in comparison with current source-fed machine. Also, shorter calculation time and capability of studying parameter sensitivity are other advantages of the proposed method in comparison with finite element method (FEM). [ABSTRACT FROM AUTHOR]