Comparison of Transient Performances for Synchronous and Eddy-current Torque Couplers

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

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

In this paper, we compare the transient performances of synchronous and eddy-current magnetic couplings. Based on a two-dimensional approximation for the magnetic field distribution, closed-form expressions for the transmitted torque are first presented. The torque formulas are then used to study the transient responses during a start-up and for a sudden application of a load torque. Simulation results are compared with those obtained from tests. It is shown that overload torque condition leads to the loss of synchronism for the synchronous coupling. A discussion about the benefits and the disadvantages of each topology in terms of transient responses is given.

Mots clés: Analytical model; eddy-current; magnetic transmission; torque; transient performance

Domaines: Energie électrique

Thierry Lubin, Julien Fontchastagner, Smail Mezani, Abderrezak Rezzoug. Comparison of Transient Performances for Synchronous and Eddy-current Torque Couplers. 22nd International Conference on Electrical Machines (ICEM), Sep 2016, Lausanne, Switzerland. pp.695-701. ⟨hal-01444195⟩