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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Study on the Noise Reduction in the Rotary Compressor Using BLDC Motor

BLDC 모터를 적용한 로터리 컴프레서 소음 저감에 관한 연구

  • Published : 2008.09.20
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Abstract

The main noise and vibration source of the BLDC rotary compressor for air conditioner was analyzed by using the measurement of noise and vibration, noise contour, and experimental modal analysis. The source is presumed to the mechanical resonance excited by the electromagnetic attractive force of the BLDC motor. To reduce the excessive noise of the BLDC rotary compressor due to the mechanical resonance, air-gap enlargement and structural dynamic modification were applied in this paper. Its validations were conducted by the analysis of the electromagnetic attractive force which is generated by the BLDC motor and by the measurement of noise and vibration of the BLDC rotary compressor. By enlarging the length of air-gap and conducting the structural dynamic modification, the noise and vibration in the compressor was significantly improved by 4.5 dB(A) and 56 percent, respectively.

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References

  1. Park, S. Y., Lee, S. H., Lee, S. I. and Kim, C. J., 1999, 'Experimental Reduction of the Noise Radiated by Rotary Compressor', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 9, No. 1, pp. 189-195
  2. Ko, H. S., Eun, H. K., Kim, K. J. and Shin, H. J., 2000, 'A Study on the Electrical Magnetic Excitation Force and Noise Characteristics in Motor of Interior Permanent Magnetic Type', Proceedings of the KSNVE 10th Anniversary Annual Conference, pp. 1139-1146
  3. Ko, H. S., 2002, 'Characterization of Electromagnetic Excitation Force for Interior Permanent Magnet Type BLDC Motors for Noise/Vibration Assessment', Korea Advanced Institute of Science and Technology
  4. Lee, T. J., Park, J. H, Lee, S. H. and Hong, J. P., 2007, 'The Vibration and Noise Characteristic Analysis of the BLDC Axial-gap Type Motor by Using Finite Element Method', Proceedings of the KSNVE Annual Autumn Conference, KSNVE07A- 34-03
  5. Kim, Y. H., Yang, B. S. and Kim, C. J., 2006, 'Noise Source Identification of Small Fan-BLDC Motor System', International Journal of Rotating Machinery, Vol. 2006, pp. 1-7
  6. Ede, J. D., Zhu, Z. Q. and Howe, D., 2002, 'Rotor Resonance of High Speed Permanent-Magnet Brushless Machines', IEEE Transactions on Industry Applications, Vol. 38, No. 2, pp. 1542-1548 https://doi.org/10.1109/TIA.2002.804765
  7. Lee, J. W., Kim, Y. J., Ahn, B. H. and Lee, Y. S., 2001, 'Development and Application of Measuring Method for Instantaneous Intensity', Proceedings of the KSPE Annual Autumn Conference, pp. 300-304
  8. Using Maxwell, version 11.1.1, Ansoft
  9. Using STAR MODAL, version 6.2, Spectral Dynamics 2002

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