Study on Core Loss of Switched Reluctance Motor by Considering Stator Polarity Arrangements

Core loss of switched reluctance motor (SRM) is very difficult to analyze due to serious non-sinusoidal and nonlinear properties of magnetic field which is caused by motor structure and various complex operation conditions. Flux density is affected by magnetic field distribution and rotating speed, which generates different core loss, and further results in different performances. Aiming at studying the effects of stator polarity arrangements (SPAs) on the operation performance of SRM and optimizing the motor structure for further improving operation efficiency, this paper investigates the characteristics of flux density and the influence on the distribution of core loss of a 12/10 poles SRM. The simulation results indicate that the tangential component of flux density at the stator and rotor yoke dramatically varies due to the stator polarity arrangements, which produces the distinction of distribution of core loss for typical parts.