Analytical Method for Magnetic Field Calculation in a Low-Speed Permanent-Magnet Harmonic Machine

2011 ◽  
Vol 26 (3) ◽  
pp. 862-870 ◽  
Author(s):  
Linni Jian ◽  
Guoqing Xu ◽  
Chunting Chris Mi ◽  
K. T. Chau ◽  
C. C. Chan
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Analytical Method ◽  
Field Calculation ◽  
Low Speed

scholarly journals Magnetic field determination for different block permanent magnet systems

2010 ◽  
Vol 23 (3) ◽  
pp. 259-272 ◽  
Author(s):  
Ana Vuckovic-Mladenovic ◽  
Slavoljub Aleksic
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Permanent Magnet ◽  
Analytical Method ◽  
Comsol Multiphysics ◽  
Magnetic Flux Density ◽  
Field Calculation ◽  
Arbitrary Direction ◽  
Magnetic Dipoles ◽  
Density Distributions

The paper presents magnetic field calculation of three characteristic permanent magnet systems, which component parts are block magnets homogeneously magnetized in arbitrary direction. Method used in this publication is based on a system of equivalent magnetic dipoles. The results obtained using this analytical method are compared with results obtained using COMSOL Multiphysics software. Magnetic field and magnetic flux density distributions of permanent magnet systems are also shown in the paper.

A novel analytical calculation of magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping

2020 ◽  
pp. 1-15
Author(s):  
Jianqi Li ◽  
Yu Zhou ◽  
Jianying Li
Keyword(s):  
Magnetic Field ◽  
Conformal Mapping ◽  
Permanent Magnet ◽  
Flux Density ◽  
Analytical Method ◽  
Electromotive Force ◽  
Analytical Calculation ◽  
Air Gap ◽  
Permanent Magnet Machines ◽  
Peak Value

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.

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