Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Prediction of a Structural Vibration and Radiated Noise of High-voltage Transformer through Force Identification

가진력 규명을 통한 초고압 변압기의 구조진동 및 방사소음 예측

  • Yoo, Suk-Jin (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Jung, Byung-Kyoo (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Jeong, Weui-Bong (School of Mechanical Engineering, Pusan National University) ;
  • Hong, Chinsuk (School of Mechanical Engineering, Ulsan College) ;
  • Kim, Tae-Yong (Hyosung P&I System R&D Center)
  • Received : 2013.04.03
  • Accepted : 2013.06.05
  • Published : 2013.06.20
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Abstract

In order to predict structural vibration and radiated noise of high-voltage transformer in operation, it is necessary to precisely find the excitation force generated by the coils and core. However, finding the excitation force through experiments of high voltage transformer in operation is not possible. Therefore, this paper deals with identifying the excitation force by using the acceleration data measured through experiments and the transfer function estimated through finite element model. A method to predict structural vibration and radiated noise was also proposed. Three-phase windings and the core are the source of high-voltage transformer. The excitation forces were identified using the acceleration data and the transfer function of the surface of the tank. Structural vibration and radiated noise from the surface of the tank was predicted by using the identified excitation force. As a result of the interpretation of the experimental and computational analysis of structural vibration from the surface of the tank and radiated noise from the field point, the interpretation of the computational analysis showed relatively good accordance with the experiment.

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References

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