Dynamical Models for Eddy Current in Ferromagnetic Cores Introduced in an FE-Tuned Magnetic Equivalent Circuit of an Electromagnetic Relay

Fabien Sixdenier (1) , Marie-Ange Raulet (1) , Romain Marion (1) , René Goyet (1) , Guy Clerc (1) , Farid Allab (2)

1 AMPERE - Ampère
2 Schneider

Electromagnetic relay modeling is elaborated using a magnetic equivalent circuit (MEC). The lumped parameters of the MEC are fitted with respect to 3-D finite-element simulation by using classical optimization algorithms. An accurate dynamic material law has to be taken into account in the modeling, considering the massive core of the circuit. Two accurate dynamical models for representing eddy currents are studied. The simulation of the relay is carried out for several excitation frequencies. A comparison between measurements and simulated quantities is provided.

Keywords: AC circuit breakers (CBs); eddy currents; magnetic hysteresis; optimization methods

Domains: Electric power

Fabien Sixdenier, Marie-Ange Raulet, Romain Marion, René Goyet, Guy Clerc, et al.. Dynamical Models for Eddy Current in Ferromagnetic Cores Introduced in an FE-Tuned Magnetic Equivalent Circuit of an Electromagnetic Relay. IEEE Transactions on Magnetics, 2008, 44 (6), pp.866-869. ⟨10.1109/TMAG.2008.916431⟩. ⟨hal-00258255⟩