title: 3D analysis of eddy current loss in the permanent magnet coupling.
abstract: This paper first presents a 3D analytical model for analyzing the radial air-gap magnetic field between the inner and outer magnetic rotors of the permanent magnet couplings by using the Amperian current model. Based on the air-gap field analysis, the eddy current loss in the isolation cover is predicted according to the Maxwell's equations. A 3D finite element analysis model is constructed to analyze the magnetic field spatial distributions and vector eddy currents, and then the simulation results obtained are analyzed and compared with the analytical method. Finally, the current losses of two types of practical magnet couplings are measured in the experiment to compare with the theoretical results. It is concluded that the 3D analytical method of eddy current loss in the magnet coupling is viable and could be used for the eddy current loss prediction of magnet couplings.
authors.affiliation: Department of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
authors.forename: Zina
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: College of Mechanical Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Meng