Modeling and Performance Analysis of an Axial-Radial Combined Permanent Magnet Eddy Current Coupler
TL;DR: The transmission performance of an axial-radial combined permanent magnet eddy current coupler prototype is investigated, and the analytical calculation results are compared with the results of the finite element method simulations and experimental tests.
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Abstract: The structure and magnetic circuits of axial-radial combined permanent magnet eddy current couplers are more complicated than those of axial or radial permanent magnet eddy current couplers, the degree of coupling is deeper, which will affect the device performance. In this paper, a novel analytical model for an axial-radial combined permanent magnet eddy current coupler is proposed based on the equivalent magnetic circuit method. The distribution of the magnetic field, the relationship between the slip and torque, the influence of the structural parameters on the transmission performance, the 3-D correction and thermal compensation are studied. Combined with the concept of the micro-element method, the air gap magnetic density, eddy current density and torque are accurately calculated, which solves the problem that the existing model cannot analyse the axial-radial combined structure. To show the effectiveness of the proposed analytical model, the transmission performance of an axial-radial combined permanent magnet eddy current coupler prototype is investigated, and the analytical calculation results are compared with the results of the finite element method simulations and experimental tests.
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Citations
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References
Nonlinear Modeling of Eddy-Current Couplers
TL;DR: In this article, a model for radial-flux eddy-current couplers is developed, which can easily handle complex geometries as well as account for iron saturation, all material properties, and three-dimensional (3D) parameters.
120
A General Analytical Model of Permanent Magnet Eddy Current Couplings
TL;DR: In this article, an improved practical two-dimensional model for the analytical calculation of the magnetic field distributions in permanent magnet (PM) eddy current couplings is presented to obtain the torque characteristics.
119
Steady-State and Transient Performance of Axial-Field Eddy-Current Coupling
Thierry Lubin,Abderrezak Rezzoug +1 more
TL;DR: This paper presents an approach for quick calculation of steady-state and transient performances of an axial-field eddy-current coupling based on a 2-D approximation of the magnetic field distribution and shows that good agreements are obtained.
A Simple Method for Performance Prediction of Permanent Magnet Eddy Current Couplings Using a New Magnetic Equivalent Circuit Model
Jian Wang,Jianguo Zhu +1 more
TL;DR: A simple and practical magnetic equivalent circuit (MEC) based analytical technique for calculating the performance parameters of the permanent magnet (PM) eddy current coupling is presented and shows that in a considerably wide range of slip speeds, the torques predicted by the presented method match well with those obtained by both the three-dimensional finite element analysis and experimental measurement.
106
3-D Analytical Model for Axial-Flux Eddy-Current Couplings and Brakes Under Steady-State Conditions
Thierry Lubin,Abderrezak Rezzoug +1 more
TL;DR: In this article, a 3D analytical model for axial-flux eddy-current couplings and brakes is presented, leading to closed-form expressions for the torque and the axial force.