Investigation of on-board hybrid pulse tube cryocooler for high temperature superconducting rotor

Author

Nam, Jung-Won ; Jeong, Sangkwon ; Kim, Hongseong ; Jung, Jeheon ; Kwon, Young-Kil

Author_Institution

LG Electron. Inc., Seoul, South Korea

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

2190

Lastpage

2193

Abstract

This paper discusses the practical realization of an advanced cooling method for superconducting rotor; on-board cryocooler. A hybrid pulse tube cryocooler was designed and tested in the rotating system. A Stirling cryocooler precooled the regenerator of the pulse tube cryocooler to produce lower temperature at the cold end of the pulse tube cryocooler. Based on adiabatic model and loss mechanism analysis, the pulse tube cryocooler was designed and fabricated. The hybrid cryocooler was aligned in the test rotor to have a concentric centerline with the rotation axis. Even if the performance of the rotating hybrid pulse tube cryocooler was not satisfactory, achieving 55 K, the feasibility of on-board cryocooler method for superconducting rotor was confirmed.

Keywords

cryogenics; high-temperature superconductors; rotors; superconducting machines; Stirling cryocooler; adiabatic model; cooling method; high temperature superconducting rotor; loss mechanism analysis; on-board cryocooler method; on-board hybrid pulse tube cryocooler; rotating hybrid pulse tube cryocooler; rotating system; rotation axis; Cooling; Cryogenics; Heat transfer; Helium; High temperature superconductors; Refrigeration; Rotors; Superconducting filaments and wires; Superconducting materials; Superconductivity; Hybrid pulse tube cryocooler; Stirling cryocooler; on-board cryocooler; superconducting rotor;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849609

Filename

1440098