Effect of Industrial Impregnation Process on the Magnetic Properties of Electrical Steels

H. Helbling (1) , Abdelkader Benabou (2) , A. van Gorp (3) , A. Tounzi (1) , M. El Youssef (3) , W. Boughanmi (4) , D. Laloy (4)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 OMN - L2EP - Équipe Outils et Méthodes Numériques
3 MSMP - Mechanics surfaces and materials processing
4 JEUMONT Electric

This paper deals with the experimental investigation of the effect of impregnation process on the normal magnetization curve and iron losses of electrical steels. To address this issue, several laminated toroidal magnetic circuits have been designed to characterize the magnetic properties with the flux metric method. The first configuration considers magnetic circuits wrapped with adhesive tape so that the dielectric resin will be deposited only on the outer surface of the magnetic circuit. In the second configuration, the magnetic circuits are unwrapped, which will allow the resin to diffuse within the inter-laminar spaces of the magnetic circuit. The obtained experimental results show significant effects on the magnetic properties in both cases. However, depending on the considered configuration, the resin diffusion also has an influence on the changes in magnetic properties.

Mots clés: Magnetic Properties; Iron Losses; Manufacturing Process; Impregnation Process

Domaines: Matériaux; Electromagnétisme

H. Helbling, Abdelkader Benabou, A. van Gorp, A. Tounzi, M. El Youssef, et al.. Effect of Industrial Impregnation Process on the Magnetic Properties of Electrical Steels. Journal of Magnetism and Magnetic Materials, inPress, ⟨10.1016/j.jmmm.2021.167942⟩. ⟨hal-03182770⟩