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A Study of the Low Noise Transformer by Avoiding the Structural Resonance  

Choi, Won-Ho ((주)효성 중공업연구소 구조진동팀)
Kim, Jin ((주)효성 중공업연구소 구조진동팀)
Suk, Ho-Il ((주)효성 중공업연구소 구조진동팀)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.12, 2005 , pp. 520-526 More about this Journal
Abstract
Demands for the noise reduction of a transformer has been becoming an common issue because it has been used mainly at the residence area such as an apartment complex. This paper shows 2 trouble shooting examples that high noise sources were found out structural resonance of a transformer by 120Hz exciting frequency caused from magnetostrictive vibration of core. This paper presents that vibration data are very important to find noise source and how to avoid natural frequency of core and tank wall
Keywords
Transformer; Magnetostrictive Vibration; Flux Density; Resonance; Core; Sound Intensity;
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  • Reference
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