3D eddy currents computation by BEM using the modified magnetic vector potential and the reduced magnetic scalar potential

Quang-Anh Phan (1, 2) , Gérard Meunier (1, 2) , Olivier Chadebec (1, 2) , Jean‐michel Guichon (1, 2) , Bertrand Bannwarth (1, 2)

1 G2ELab - Laboratoire de Génie Electrique de Grenoble
2 G2Elab-MAGE - G2Elab-Modèles, Méthodes et Méthodologies Appliqués au Génie Electrique

A new Boundary Element Method (BEM) formulation has been developed for the computation of 3D eddy currents in both magnetic and conductive regions. The modified magnetic vector potential A * in the active regions and the reduced magnetic scalar potential ϕ in the air are used as unknown variables. The formulation is limited to low-frequency magneto-harmonic problems associated to linear, homogeneous, isotropic and simply-connected regions. In such a configuration , it leads to accurate results with a reduced number of degrees of freedom located on a surface mesh delimiting the air/material interface.

Mots clés: Boundary element method; 3D eddy current; quasi-statics; modified magnetic vector potential; reduced magnetic scalar potential

Domaines: Energie électrique

Quang-Anh Phan, Gérard Meunier, Olivier Chadebec, Jean‐michel Guichon, Bertrand Bannwarth. 3D eddy currents computation by BEM using the modified magnetic vector potential and the reduced magnetic scalar potential. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2019, 33 (5), ⟨10.1002/jnm.2642⟩. ⟨hal-02364312v2⟩