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Torque analysis of magnetic spur gear with radial magnetized permanent magnets based on analytical method

Authors
Min, K.-C.Choi, J.-Y.Sung, S.-Y.Park, J.-W.
Issue Date
2015
Publisher
Korean Institute of Electrical Engineers
Keywords
Analytical solutions; Coordinate conversion; FEA; Magnetic spur gear
Citation
Transactions of the Korean Institute of Electrical Engineers, v.64, no.4, pp 545 - 551
Pages
7
Journal Title
Transactions of the Korean Institute of Electrical Engineers
Volume
64
Number
4
Start Page
545
End Page
551
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/835
DOI
10.5370/KIEE.2015.64.4.545
ISSN
1975-8359
2287-4364
Abstract
This paper deals with torque analysis of magnetic spur gear with radial magnetized permanent magnets based on analytical method. The analysis is implemented in three parts: First, on the basis of magnetic vector potential and a two-dimensional (2D) polar-coordinate system, the magnetic field solution due to permanent magnet of source gear are obtained. And by using derived magnetic field solutions, the analytical solutions for external magnetic field distribution which affects load gear are obtained. Second, by using coordinate conversion, external magnetic field which is on the primary coordinate system is converted to the secondary coordinate system. Finally, the load gear is reduced to equivalent current densities, and the torque is computed on these currents in the external field of the source magnet. These analytical results are validated by comparing with the 2-D finite element analysis (FEA). Copyright ? The Korean Institute of Electrical Engineers.
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