Experimental and Theoretical Analysis of Axial Magnetic Coupling under Steady-State and Transient Operation

Thierry Lubin (1) , Smail Mezani (1) , Abderrezak Rezzoug (1)

1 GREEN - Groupe de Recherche en Electrotechnique et Electronique de Nancy

This paper investigates the steady-state and the transient performances of an axial magnetic coupling by using analytical formulas issued from an analytical model based on a two-dimensional approximation for the magnetic field distribution (mean radius model). From the magnetic field expression, simple analytical formulas are derived for computing the pull-out torque and the torsional stiffness of the coupling as a function of the geometrical parameters. Here, a special attention is given to the overload torque condition during the transient which lead to the loss of synchronism for the coupling. Moreover, radial and angular misalignment conditions are also studied. In order to study the accuracy of the proposed analytical model, the results are compared with those obtained from 3D finite element simulations and measurements.

Mots clés: transient performance

Mots clés: transient performance.; pull-out torque; permanent magnets; magnetic field; axial coupling; Analytical model

Domaines: Energie électrique; Electromagnétisme; Supraconductivité [cond-mat.supr-con]

Thierry Lubin, Smail Mezani, Abderrezak Rezzoug. Experimental and Theoretical Analysis of Axial Magnetic Coupling under Steady-State and Transient Operation. IEEE Transactions on Industrial Electronics, 2014, 61 (8), 9 p. ⟨10.1109/TIE.2013.2266087⟩. ⟨hal-00833962⟩