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An analysis to force received in transformer core under DC bias conditions

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3 Author(s)
Baodong Bai ; Special Motor & High Voltage Apparatus Key Lab. of Minist. of Educ., Shenyang Univ. of Technol., Shenyang, China ; Bing Xu ; Jin Lu

In high voltage direct current (HVDC) transmission system, earthed pole current enter into transformer windings through neutral point, which result in DC bias conditions, as a result increasing in transformer loss, noise level and force received. COMSOL Multiphyiscs is a finite element numerical analysis software, which is used for modeling and simulating calculation when study on scientific subject and engineering project based on partial differential equation. By using COMSOL Multiphyiscs software, this article explained coupling of electrical field, magnetic field, stress field, sound field, and analyze the transformer core force received and noise under DC bias condition.

Published in:

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Date of Conference:

20-23 Aug. 2011

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