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Magnetostriction Modeling of Transformer's Noise

Thursday, December 16, 2021

The magnetostriction effect is the main culprit for transformer’s noise and vibration. In simple terms, upon the exposure to a magnetic field, a magnetic steel gets magnetized, thus, extends. When the magnetic field is turned off, the sheet shrinks back to its original form. This cycle of extension and contraction is usually small dimensionally and therefore cannot be seen by the naked eye, i.e. in the order of microns per meter. Nevertheless, it is sufficient to cause vibration and, hence, noise. Reducing noise caused by the magnetostriction is the nightmare of transformer's designers and manufacturers.

In this webinar, we will show you step-by-step how to use EMS and SolidWorks to accurately compute the magnetostriction force and the resulting displacement, stress, and strain early in the design cycle using the digital twin of your transformer.



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