한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제22권5호
  • /
  • Pages.337-344
  • /
  • 2003
  • /
  • 1225-4428(pISSN)
  • /
  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
권호 표지

자기부상열차용 VVVF 인버터 및 DC/DC 컨버터의 소음해석

Noise Analyses of VVVF Inverter and DC/DC Converter for Maglev Train

  • 발행 : 2003.07.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

자기부상열차의 가장 중요한 소음원인 VVVF 인버터와 DC/DC 컨버터는 탄성체인 코어가 MS (Magnetostriction)에 의해 가진되어 소음을 발생한다. DC/DC 컨버터는 변압기가 주원인이며 소음/진동 스펙트럼에 가진주파수의 하모닉성분이 뚜렷하게 나타난다. 반면, LIM/VVVF 인버터소음은 가진주파수의 하모닉성분은 미약한 대신 변환주파수의 하모닉성분이 매우 강하게 나타난다. VVVF 인버터소음에서 변환주파수를 올리면 하모닉성분이 고주파수대역으로 이동하는데 700 ㎐를 2㎑로 올리면 소음이 5-6 ㏈ 감소되는 것으로 나타났다. 현 기술수준으로 MS에 의한 탄성체의 소음/진동을 정량적으로 예측하기는 어려운 실정이므로 본 논문에서는 정성적으로 MS에 의한 가속도 스펙트럼을 예측하였고 VVVF 인버터에 대해 변환주파수 증가의 효과를 확인할 수 있었다.

In DC/DC converter and VVVF inverter, which are the must dominant noise sources of Maglev train, noise is radiated from core and coil excited by MS(Magnetostriction). The main noise source of DC/DC converter is transformer whose spectrum shows strong peaks associated with harmonics of exciting frequency, On the other hand, LIM/VVVF noise is dominated by the harmonics of switching frequency, whereas harmonics of exciting frequency are not significant. As switching frequency is increased in VVVF inverter, it is shown that the harmonics are shifted to higher frequency range. If switching frequency is increased from 700㎐ to 2 ㎑, It is measured that noise can be reduced by 5 to 6 ㏈. Since complete mathematical description of MS phenomena is far beyond the present technology, vibration spectrum is investigated qualitatively in this paper, where effect of increasing switching frequency is confirmed.

키워드

참고문헌

  1. 한국소음진동공학회지 v.11 no.7 저속주행시 자기부상열차의 실내소음저감에 관한 연구 김현실;김재승;강현주;김봉기;김상렬
  2. Proceedings of the Maglev '98 The results of running test of the HSST-1001 vehicle M.Tanaka;M.Fujino;M.Murai
  3. Noise and Vibration of Electrical Machines P.L.Timar
  4. IEEE Transactions on Power Apparatus and Systems v.100 Characteristics and control of transformer sound S.L.Foster;E.Reiplinger https://doi.org/10.1109/TPAS.1981.316573
  5. IEEE Transactions on Magnetics v.36 Relevance of magnetostriction and forces for the generation of audible noise of transformer cores B.Weiser;H.Plutzner;J.Anger https://doi.org/10.1109/20.908346
  6. Journal of Magnetism and Magnetic Materials v.160 Influence of geometric parameters on the magnetic properties of model transformer cores A.Ilo;B.Weiser;T.Booth;H.Pluzner https://doi.org/10.1016/0304-8853(96)00099-6
  7. JMEPEG v.6 Recent development in grain-oriented electrical steel with low magnetostriction M.Yamamoto;S.Arai;R.Kawamata;M.Mizokami;T.Kubota https://doi.org/10.1007/s11665-997-0071-7
  8. IEEE Transactions on Magnetics v.23 A survey of the main aspects of magnetic forces and mechanical behaviour of ferromagnetic materials under magnetization G.Reyne;J.C.Sabonnadiere;J.L.Coulomb;P.Brissonneau https://doi.org/10.1109/TMAG.1987.1065518
  9. Journal of Sound and Vibration v.250 Combination of finite and boundary element methods in investigation and prediction of load-controlled noise of power transformers M.Rausch;M.Kaltenbacher;H.Landes;R.Lerch https://doi.org/10.1006/jsvi.2001.3934
  10. 경량전철의 실내소음 저감기술연구 (자기부상열차 소음저감연구) 김현실;김재승;강현주;김봉기;김상렬
  11. Electromechanical Dynamics H.H.Woodson;J.R.Melcher
  12. IEEE Transactions on Magnetics v.36 Local magnetostriction forces for finite element analysis K.Delaere;W.Heyen;K.Hameyer;R.Belmans https://doi.org/10.1109/20.908703
  13. Structure-Borne Sound L.Cremer;M.Heckl
  14. Functions of a Complex Variables G.F.Carrier;M.Krook;C.E.Pearson