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When the transformer is working, according to the electromagnetic principle, it can be seen that the iron core and the coil are placed under the action of the alternating magnetic field to produce magnetic force.
How Is Power Transformer Noise Generated? How to Solve?
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Author: Site Editor
Publish Time: 2023-07-19
Origin: Site
When the transformer is working, according to the electromagnetic principle, it can be seen that the iron core and the coil are placed under the action of the alternating magnetic field to produce magnetic force.
So the main reasons for the noise of the transformer are:
1. The noise generated by the magnetostrictive vibration of the iron core material.
2. The force between the rolls (laminations) collides with each other.
3. The coil with large current is vibrated by magnetic force between turns.
4. Forced magnetic impact between the core and the coil.
5. The leakage of the alternating magnetic field of the transformer affects the vibration of the surrounding thin iron.
6. The transformer is not installed firmly and forms resonance with the casing.
The solutions can be:
1. Use a core material with a small magnetostriction coefficient, such as a silicon-copper strip containing more than 6.5% silicon.
2. Reduce the magnetic flux design and reduce the magnetic force.
3. The winding or stacking of the iron core should not be loosened, and the tightness is tight enough.
4. Use insulating paint with high bonding strength and small expansion coefficient to impregnate and dry.
