Measured distributions of two-dimensional magnetic properties in a threephase induction motor model core by using a V-H sensor

This paper presents measured distributions of two-dimensional vector magnetic properties in a three-phase induction motor model core. The time-varying local magnetic field strength vector, the flux density vector trajectory, and iron loss distributions are measured. In the measurement of the local magnetic properties, we have fabricated a large three-phase induction motor model core and used a two-dimensional vector hysteresis sensor (V-H sensor), which consists of double H-coils for field strength measurement and double stylus probe for flux density measurement. The results show that the spatial phase difference between the field intensity vector and the flux density vector exists in the core, and anisotropy of the core material influenced on the iron loss distribution.