Conducted EMI reduction on the pulse tube cryocooler

M. J. Eshraghi; Myongwon Cho; Jin Mok Kim; Ichiro Sasada

doi:10.1109/TMAG.2009.2020548

Conducted EMI reduction on the pulse tube cryocooler

M. J. Eshraghi, Myongwon Cho, Jin Mok Kim, Ichiro Sasada

電気理工学

研究成果: ジャーナルへの寄稿 › 記事

1 引用（Scopus）

抜粋

Pulse tube (PT) cryocoolers can be used to cool SQUIDs, however their electromagnetic interference (EMI) through the conducted high frequency noise currents are normally too large to operate SQUIDs. In this paper, high frequency noise currents of a pulse tube cryocooler system are simultaneously observed at several critical points to analyze conducting paths of the noise currents and to find a solution for this problem. High frequency noise currents are detected by current sensors consisting of a current transformer and a terminating resistor at the secondary side. By covering three-phase power lines and a neutral line connecting the valve motor to the inverter with a copper mesh, and by using it as an additional neutral line, conducted EMI (noise currents) to the cryostat has bee reduced by one fifth. With this treatment, SQUIDs have been operated normally.

元の言語	英語
記事番号	4957755
ページ（範囲）	2754-2757
ページ数	4
ジャーナル	IEEE Transactions on Magnetics
巻	45
発行部数	6
DOI	https://doi.org/10.1109/TMAG.2009.2020548
出版物ステータス	出版済み - 6 1 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

文献にアクセス

10.1109/TMAG.2009.2020548

フィンガープリント Conducted EMI reduction on the pulse tube cryocooler' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

これを引用

Eshraghi, M. J., Cho, M., Kim, J. M., & Sasada, I. (2009). Conducted EMI reduction on the pulse tube cryocooler. IEEE Transactions on Magnetics, 45(6), 2754-2757. [4957755]. https://doi.org/10.1109/TMAG.2009.2020548

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