Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2002.11a
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- Pages.339.1-339
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- 2002
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- 1598-2548(pISSN)
A Study of Maglev Train Inverter and Conveter Noise
자기부상열차용 인버터 및 컨버터 소음에 관한 연구
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Kim, Hyun-Sil
(Korea Institute of Machinery and Materials)
;
- Kim, Jae-Seung ;
- Kang, Hyun-Joo ;
- Kim, Bong-Ki ;
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Kim, Sang-Rul
(Korea Institute of Machinery and Materials)
- Published : 2002.11.01
Abstract
Noise of the VVVF inverter and DC/DC converter, which are the most dominant noise sources of maglev train at low speed, is studied. The coils inside inverter and converter are excited by the electro-magnetic forces, which results in core vibration and generations of the noise. It is found that the spectra of the noise show many harmonics, where there exist several different fundamental frequencies. (omitted)