Open AccessMulti-field Coupling Simulation and Experimental Study on Transformer Vibration Caused by DC Bias
Author(s) -
Jingang Wang,
Can Gao,
Duan Xu,
Kai Mao
Publication year - 2015
Publication title -
journal of electrical engineering and technology/journal of electrical engineering and technology
Language(s) - English
Resource type - Journals
eISSN - 2093-7423
pISSN - 1975-0102
DOI - 10.5370/jeet.2015.10.1.176
Subject(s) - transformer , vibration , dc bias , acoustics , coupling (piping) , physics , electrical engineering , engineering , voltage , mechanical engineering
DC bias will cause abnormal vibration of transformers. Aiming at such a problem, transformer vibration affected by DC bias has been studied combined with transformer core and winding vibration mechanism use multi-physical field simulation software COMSOL in this paper. Furthermore the coupling model of electromagnetic-structural force field has been established, and the variation pattern of inner flux density, distribution of mechanical stress, tension and displacement were analyzed based on the coupling model. Finally, an experiment platform has been built up which was employed to verify the correctness of model.