Investigation of skewing effects on the vibration reduction of three-phase switched reluctance motors

Chun Gan, Jianhua Wu, Mengjie Shen, Shiyou Yang, Yihua Hu, Wenping Cao

Research output: Contribution to journalArticlepeer-review


Switched reluctance motors (SRMs) are gaining in popularity because of their robustness, low cost, and excellent high-speed characteristics. However, they are known to cause vibration and noise primarily due to the radial pulsating force resulting from their double-saliency structure. This paper investigates the effect of skewing the stator and/or rotor on the vibration reduction of the three-phase SRMs by developing four 12/8-pole SRMs, including a conventional SRM, a skewed rotor-SRM (SR-SRM), a skewed stator-SRM (SS-SRM), and a skewed stator and rotor-SRM (SSR-SRM). The radial force distributed on the stator yoke under different skewing angles is extensively studied by the finite-element method and experimental tests on the four prototypes. The inductance and torque characteristics of the four motors are also compared, and a control strategy by modulating the turn-ON and turn-OFF angles for the SR-SRM and the SS-SRM are also presented. Furthermore, experimental results validate the numerical models and the effectiveness of the skewing in reducing the motor vibration. Test results also suggest that skewing the stator is more effective than skewing the rotor in the SRMs.
Original languageEnglish
Article number8203509
Number of pages9
JournalIEEE Transactions on Magnetics
Issue number9
Early online date3 Jun 2015
Publication statusPublished - Sept 2015

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