Title :
How to characterize soft magnetic materials by measuring magnetic flux density in a rotating field apparatus
Author :
Azzouz, Y. ; Mouillet, A.
Author_Institution :
Lab. de Genie Electrique, Faculte des Sci. et Techniques Saint Jerome, Marseille, France
fDate :
5/1/2002 12:00:00 AM
Abstract :
This paper deals with the characterization of the magnetic permeability of soft magnetic materials under a rotating magnetic field. The paper reviews the principle of the rotating-flux-density device used for measurement of flux density, then describes the mathematical method used to calculate permeability from the measurements. The method combines direct and inverse solutions and is based on a functional minimization sequence. An example demonstrates the validity of the method. Finally, the paper discusses the uniqueness of the solution and its sensitivity
Keywords :
ferromagnetic materials; inverse problems; machine testing; magnetic permeability measurement; minimisation; soft magnetic materials; armature; direct solutions; ferromagnetic samples; functional minimization sequence; inductor; inverse solutions; iron loss; magnetic flux density; magnetic permeability; mathematical method; rotating electrical machines; rotating field apparatus; rotating-flux-density device; sensitivity; soft magnetic materials; Density measurement; Magnetic anisotropy; Magnetic field measurement; Magnetic flux; Magnetic flux density; Magnetic materials; Permeability; Rotation measurement; Saturation magnetization; Soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
