Suppressing magneto-mechanical vibrations and noise in magnetostriction variation for three-phase power transformers
Journal
Journal of Applied Physics
Journal Volume
117
Journal Issue
17
Date Issued
2015
Author(s)
Abstract
This study investigated the effect of magnetostriction-induced core magnetomechanical vibrations and noise on the magnetic properties of power transformers. The magnetostriction of grain-oriented Si steels was found to be extremely sensitive to compressive stress applied along the rolling direction and to tensile stress applied along the transverse direction. The compressive stress increased the variation in the magnitude of magnetostriction, which is correlated with core vibration and noise. A 2D model of the power transformer was used to simulate the noise and vibration variables through a finite element analysis.
SDGs
Type
journal article