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

• Published in: IEEE transactions on magnetics Vol. 44; no. 6; pp. 866 - 869
• Main Authors: Sixdenier, F., Raulet, M.-A., Marion, R., Goyet, R., Clerc, G., Allab, F.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2008; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: AC circuit breakers (CBs); Circuit breakers; Circuit simulation; Circuits; Computer simulation; Cross-disciplinary physics: materials science; rheology; Eddy currents; Electric power; Electromagnetic modeling; Engineering Sciences; Equivalent circuits; Exact sciences and technology; Magnetic circuits; Magnetic cores; Magnetic flux; magnetic hysteresis; Magnetic materials; Magnetism; Materials science; Mathematical analysis; Mathematical models; Optimization; optimization methods; Other topics in materials science; Physics; Relay; Relays; Circuit breakers; Magnetic hysteresis; Modelling; optimization methods; Eddy currents; Magnetic circuits; AC circuit breakers (CBs); Magnetic properties; Equivalent circuits; eddy currents; magnetic hysteresis
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2008.916431

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.