Distribution of local magnetic properties in three-phase induction motor model core

Efficiency improvement of electrical machines, is a very important problem. However the local magnetic properties in core materials have not yet understood fully. On the other hand, the concept of the two-dimensional magnetic property has been reported. It means the relationship between the magnetic field strength vector H and the flux density vector B. They are not usually parallel but have a phase angle in space. This paper presents the measured local vector-magnetic properties in a three-phase induction motor model core