Analysis of Vibration and Noise in Transformer under DC Bias

Bao Dong Bai; Jian Zhang; Guo Hui Yang; Jia Yin Wang

doi:10.4028/www.scientific.net/AMM.229-231.880

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 229-231Analysis of Vibration and Noise in Transformer...

Analysis of Vibration and Noise in Transformer under DC Bias

Abstract:

DC bias would cause the half-wave saturation of transformer, distortion of the exaction current, generation of high harmonic and the vibration and noise increases rapidly, which harm the safe operation of the transformers. In this paper, simulation of magnetic vibration and noise of a 160KVA dry-type transformer with DC bias and modal analysis with the finite element software comsol multiphysics is obtained. The software conduct multi-physical field coupling analysis to electric field, magnetic field, structural stress field and acoustic field, calculate the distribution of the noise and the natural frequency of transformer and propose effective measures to reduce the noise and vibration of transformer with DC bias.

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Periodical:

Applied Mechanics and Materials (Volumes 229-231)

Pages:

880-883

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.229-231.880

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Online since:

November 2012

Authors:

Bao Dong Bai, Jian Zhang, Guo Hui Yang, Jia Yin Wang

Keywords:

DC Bias, Noise, Transformer, Vibration

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References

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