Abstract
In the past, the magnetic properties of a material were estimated by measured scalar quantities in a measurement direction under the condition of an alternating magnetic field excitation. Also, in the conventional magnetic field analysis which is applied to such things as rotating machines, the magnetic properties of the arbitrary direction has been modeled by using the magnetic properties of the easy axis and its perpendicular direction. Such kind of numerical modeling cannot exactly show the phase difference between the magnetic flux density  and the magnetic field strength H in the case of a rotating magnetic field excitation. In this paper, we measure the  and Ç values as vector quantities in the case of the rotating magnetic field excitation. The magnetic properties of the material are expressed by the magnetic reluctivity tensor. This new expression can be applied to the rotting magnetic field analysis. As a result, it is shown that our new method is applicable to the problem in the case of the rotating magnetic field excitation.
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