scholarly journals Analytical Calculation of Magnetic Field in Fractional-slot Windings Linear Phase-shifting Transformer Based on Exact Subdomain Model

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Guoqiang Guo ◽  
Jinghong Zhao ◽  
Mei Wu ◽  
Yiyong Xiong
Author(s):  
Jianqi Li ◽  
Yu Zhou ◽  
Jianying Li

This paper presented a novel analytical method for calculating magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping. Firstly, flux density without slots and complex relative air-gap permeance of slotted air gap are derived from conformal transformation separately. Secondly, they are combined in order to obtain normalized flux density taking account into the slots effect. The finite element (FE) results confirmed the validity of the analytical method for predicting magnetic field and back electromotive force (BEMF) in the slotted air gap of spoke-type permanent-magnet machines. In comparison with FE result, the analytical solution yields higher peak value of cogging torque.


Author(s):  
Shuheng Zhang ◽  
Jinghong Zhao ◽  
Yangwei Zhou ◽  
Mei Wu

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