Abstract

The air gap magnetic field of a magnetic coupling plays a crucial role in the examination of its static torque and eddy current losses. Precise characterization of the air gap magnetic field is essential for ensuring the accuracy of performance assessments of the magnetic coupling. This study focuses on the cylindrical magnetic coupling as the subject of investigation, employing mathematical analysis and finite element methods to evaluate and quantify the magnetic field properties. The study establishes a mathematical model of the magnetic field of a magnetic coupling based on electromagnetic field principles and the superposition theorem. An analytical formula for the magnetic flux density distribution of the air-gap magnetic field is derived. Subsequently, a three-dimensional magnetic field finite element model is created using the finite element method to numerically calculate the air gap magnetic field and validate the analytical formula. The research also explores the periodic distribution characteristics of the magnetic field in the air gap, analyzing axial differences in magnetic flux density value and direction distribution influenced by end effects.

Details

Title
Analysis of the air gap magnetic field in cylindrical magnetic couplings based on mathematical and finite element approach
Author
Li, Lian-bo 1 ; Chen, Tao 2 ; Li, Wei-xuan 3 

 Nanjing Vocational University of Industry Technology, Industrial Perception and Intelligent Manufacturing Equipment Engineering Research Center of Jiangsu Province, Nanjing, PR China 
 Nanjing Institute of Technology, School of Energy and Power Engineering, Nanjing, PR China (GRID:grid.443518.f) (ISNI:0000 0000 9989 1878) 
 Nanjing University of Science and Technology, School of Mechanical Engineering, Nanjing, PR China (GRID:grid.410579.e) (ISNI:0000 0000 9116 9901) 
Pages
27067
Publication year
2024
Publication date
2024
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3125884433
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.