Magnetic Field Analysis of External Rotor Permanent-Magnet Synchronous Motors Using Conformal Mapping

2010 ◽  
Vol 46 (9) ◽  
pp. 3684-3693 ◽  
Author(s):  
Kamel Boughrara ◽  
Rachid Ibtiouen ◽  
Damir Zarko ◽  
Omar Touhami ◽  
Abderezzak Rezzoug
2017 ◽  
Vol 65 (6) ◽  
pp. 833-843 ◽  
Author(s):  
X. Sun ◽  
B. Su ◽  
L. Chen ◽  
Z. Yang ◽  
K. Li

Abstract In this paper, a new type of interior composite-rotor bearingless permanent magnet synchronous motors (BPMSMs) with two layer permanent magnets (PMs) is proposed. In order to reduce the torque ripple of this kind of motors, the sizes of PMs are optimized. Moreover, the magnetic field analysis of the interior composite-rotor BPMSM with two layer PMs is carried out by the finite element method (FEM). The corresponding static electronic magnetic characteristics at no load, including magnetic field, PM flux linkage and inductance, are studied in detail. In addition, electromagnetic torque characteristics and suspension force characteristics are also investigated thoroughly. The results of the analysis and simulation lay a significant foundation for further research on the interior composite-rotor BPMSMs with two layer PMs.


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