Three dimensional magnetostatic finite elements for gaps and iron shells using magnetic scalar potentials

• Published in: IEEE transactions on magnetics Vol. 30; no. 5; pp. 2885 - 2888
• Main Authors: Guerin, C., Tanneau, G., Meunier, G., Brunotte, X., Albertini, J.-B.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.09.1994; Institute of Electrical and Electronics Engineers
• Subjects: Air gaps; Applied classical electromagnetism; Electromagnetism; electron and ion optics; Exact sciences and technology; Finite element methods; Fundamental areas of phenomenology (including applications); Heat transfer; Iron; Leg; Magnetic cores; Magnetostatics; Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems; Physics; Shape; Temperature; Transformer cores; Scalar potential; Theoretical study; Spheres; Modeling; Finite element method; Computation time; Three dimensional model; Static potential; Static field; Magnetic potential; Air gap; Magnetism; Metal foil
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.312539

This paper deals with magnetostatic element formulations for modelling narrow gaps in an iron core, as well as thin iron shells. These special elements have been developed for gaps in transformers or motors. Nodal elements are used with magnetic scalar potentials as state variable. The principle and the formulations of the new finite elements are described. Three numerical examples are then presented so as to validate and verify the usefulness of the special elements in terms of reduction of number of unknowns and CPU time.< >