Affiliations: [a] National Engineering Laboratory of Energy-Saving Motor & Control Technique, Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control, Anhui University, Hefei, China
Correspondence:
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Corresponding authors: Qixu Chen, National Engineering Laboratory of Energy-Saving Motors and Control Techniques, Power Quality Engineering Research Center of China Ministry of Education, Provincial Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control, Anhui University, Hefei, China. E-mail: xianjiaotong2014@163.com and Qunjing Wang, Member, IEEE, National Engineering Laboratory of Energy-Saving Motors and Control Techniques, Power Quality Engineering Research Center of China Ministry of Education, Provincial Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control, Anhui University, Hefei, China. E-mail: wangqunjing@ahu.edu.cn
Abstract: A holographic spectrum method (HSM) of multi-phase and multi-layer winding magnetomotive force (MMF) for 12-slot/10-pole combination with fractional-slot concentrated-winding (FSCW) is proposed in this paper. Taking two kinds of traditional winding layout as example, amplitude and phase distribution of the vth harmonic are calculated. The holospectrum of the multi-phase and multi-layer winding are derived based on three-phase single-layer (TP-SL) and three-phase double-layer (TP-DL) holospectrum theory. Then the finite element method (FEM) is used to validate the resultant winding MMF calculated by the holospectrum method. Results show that two methods have a good consistency in changing tendency. Prototype manufacture and test of axial-flux PMSM with a double-three-phase four-layer (DTP-FL) winding have been completed. A load experiment with two groups of resistance is established to validate its output power of axial-flux permanent magnet synchronous machine (PMSM). The temperature distribution of axial-flux PMSM is evaluated with PT100 and infrared thermal imager. The experiments shows that the axial-flux PMSM runs at a relative temperature rise.
