Measurement of Vector Magnetic Property Distribution in a Transformer Model Core by using a Vector Magnetic Sensor

Abstract

This paper presents local vector magnetic property distributions in a three-phase tripod transformer model core. The measurements were performed by using a localized vector magnetic property measurement system consisting of a three-axis positioning system and a vector magnetic sensor (V-H sensor). As a result, we made clear the local distributions of the magnetic flux density trajectory, field strength trajectory, hysteresis loop, and iron loss. The results show that the local magnetic properties have large influence from the segmented core construction, the jointing parts and the crystal grain distribution.