Torque Analysis and Measurements of Cylindrical Air-Gap Synchronous Permanent Magnet Couplings Based on Analytical Magnetic Field Calculations

Author

Jang-Young Choi ; Hyeon-Jae Shin ; Seok-Myeong Jang ; Sung-Ho Lee

Author_Institution

Electr. Eng. Dept., Chungnam Nat. Univ., Daejeon, South Korea

Volume

49

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

3921

Lastpage

3924

Abstract

This paper presents the torque analysis and measurements of cylindrical air-gap synchronous permanent magnet couplings based on analytical magnetic field calculations. Employing a magnetic vector potential and a 2-D analytical model with two polar coordinate systems, we obtain the magnetic fields produced by permanent magnets. Then, the analytical torque solutions are derived using these magnetic field solutions and a Maxwell stress tensor method. The analytical results are validated by nonlinear 2-D and 3-D finite element results. Finally, torque measurements are presented to show the effectiveness of the analysis.

Keywords

air gaps; finite element analysis; magnetic field measurement; permanent magnets; stress measurement; torque measurement; 2D analytical model; Maxwell stress tensor method; analytical magnetic field calculations; cylindrical air-gap synchronous permanent magnet couplings; magnetic vector potential; nonlinear 2D finite element analysis; nonlinear 3D finite element analysis; torque analysis; Iron; Magnetic analysis; Magnetic separation; Magnetomechanical effects; Torque; Torque measurement; Vectors; Analytical magnetic field calculations; cylindrical air-gap synchronous permanent magnet couplings (CASPMCs); finite element (FE) results;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2239265

Filename

6558896