Normal permeability of grain non-oriented, grain oriented and amorphous electrical steel sheets

Abstract

This paper presents the normal permeability μz of different grades of electrical sheets (Grain oriented, non oriented and amorphous). A specific test bench allows determining the intrinsic static B(H) cycle. The magnetization in static mode makes it possible to suppress the eddy current influence, contrary to others classical methods. The B-H curves of different materials are provided up to the saturation and the μz permeability can be directly implemented in Finite Element software applications.

Study of the effect of the demagnetizing field in Epstein strips of grain-oriented electrical steels through 3D finite element analysis

“…Herein, the study is limited to a simple diagonal tensor [equation ( 2 This representation of the anisotropy means that the behavior between the main directions RD, TD and the normal direction to the plane (ND) is magnetically decoupled. The in-plane permeabilities m RD and m TD of the investigated GOES are, respectively, measured in the RD and TD in the linear zone, and the normal relative permeability m ND has been assumed very low (of % 30) as experimentally measured in (Hihat et al, 2014) for a GOES.…”

Investigating the use of grain-oriented electrical steel in axial-flux switched reluctance machines

“…In the model, θ is the angle representing the rotor position between alignment and the opposition position. Anisotropy is introduced using a diagonal tensor with a normal permeability which value is defined in [11], first on the stator to simplify the anisotropy modeling when the rotor position is changed. Then, the numerical model also permits the use of GOES at the rotor to analyze the flux lines distribution when anisotropy is introduced in the rotating parts.…”