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Investigation of the origin of load-controlled vibration of large power transformers by coupled 3D-FEM analysis

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2 Author(s)
Michael Ertl ; SIEMENS AG Power Transmission and Distribution; Transformers; Technology & Innovation, Nuremberg, Germany. e-mail: ; Werner Probst

This paper presents a three-dimensional numerical analysis of the load noise generation associated with large, oil immersed three-phase power transformers. Based on investigations of an appropriate modeling of the vibratory winding structures of transformers, the mechanical behavior of these devices are studied. By using an efficient coupled simulation scheme based on magneto-mechanical finite element calculation, the solution of magnetic and mechanical systems can be achieved simultaneously by taking account of their strong mutual coupling.

Published in:

2006 International Conference on Power System Technology

Date of Conference:

22-26 Oct. 2006