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| Investigation of Axial Magnetic Force in Permanent Magnet Synchronous Machines with Rotor Step Skewing |
| Jin Mengjia1, Fei Weizhong1, 2, Shen Jianxin1 |
| 1. Zhejiang University Hangzhou 310027 China 2. Cranfield Univerisity Cranfield MK43 0AL U.K. |
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Abstract Rotor step skewing technique is widely employed for torque ripple and mechanical vibration minimizations in permanent magnet synchronous machines. Using the three-dimensional finite element method, this paper comprehensively investigates the axial magnetic unbalance force in permanent magnet synchronous machines due to the rotor step skewing. The analysis results reveal that the axial stack length and stator radial ventilating air ducts have rather small impacts on the axial magnetic force, whilst the rotor skewing step number as well as the armature current amplitude and phase angle have relatively high correlations with both the average and peak-to-peak values of the axial magnetic force.
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Received: 13 September 2013
Published: 26 March 2014
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| About author:: Jin Mengjia Male, born in 1980, PhD, associate professor. His main research interest includes motion control and motor drives.Fei Weizhong Male, born in 1981, PhD, research fellow/lecturer. His main research interest includes design and applications of permanent magnet machines. |
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2013, Vol. 28 
