Research on magnetostriction of grain-oriented electrical silicon-steel sheet

Purpose - The magnetostriction of grain-oriented electrical silicon steel sheet is studied for the magnetic field direction along the rolling direction and deviating from it. The method of calculating the vibration of transformer is developed through COMSOL. The paper aims to discuss these issues. Design/methodology/approach - Measurements of signals of magnetostriction and magnetic polarization, and calculation through software. Findings - The angle between the magnetic field direction and the rolling direction does a great influence on magmetostriction strain. Originality/value - The maximum Ap., of transversal magnetostriction is above 30 times more than the value when the angle is 00. The transversal magnetostriction is a main reason of vibration increasing at the corner of transformer.