Title :
Development of a liquid nitrogen pump using superconducting bulk motor
Author :
Komori, Mochimitsu ; Uchino, Koji
Author_Institution :
Dept. of Appl. Sci. for Integrated Eng., Kyushu Inst. of Technol., Fukuoka, Japan
fDate :
6/1/2004 12:00:00 AM
Abstract :
A magnetically levitated stepping motor using high Tc superconductor has been studied. The levitated stepping motor consists of a cylindrical rotor with superconductors and a stator with eight electromagnets. The rotor measures 10 mm in diameter, 46 mm in length, and 18 g in weight. The superconductors of the rotor are zero-field-cooled in liquid nitrogen. The levitated rotor is driven by four-phase excitations. The rotor is successfully applied to a liquid nitrogen pump. The dynamic properties of the nitrogen pump are discussed in this paper.
Keywords :
magnetic levitation; micropumps; stepping motors; superconducting machines; superconducting magnets; 10 mm; 46 mm; cylindrical rotor; dynamic properties; electromagnets; high Tc superconductor; levitated stepping motor; liquid nitrogen pump; magnetic levitation; stator; superconducting bulk motor; zero-field-cooled; Electromagnetic measurements; Electromagnets; Length measurement; Magnetic levitation; Microcomputers; Nitrogen; Rotors; Stators; Superconducting coils; Superconducting magnets; Liquid nitrogen pump; magnetic drive; stepping motor; superconducting levitation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.831027
