A two-phase full-wave superconducting rectifier

Author

Ariga, T. ; Ishiyama, Atsushi

Author_Institution

Dept. of Electr. Eng., Waseda Univ., Tokyo, Japan

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1815

Lastpage

1818

Abstract

A two-phase full-wave superconducting rectifier has been developed as a small cryogenic power supply of superconducting magnets for magnetically levitation trains. Those magnets will be operated in the persistent current mode. However, small ohmic loss caused at resistive joints, and AC loss induced by the vibration of the train cannot be avoided. Therefore, the low-power cryogenic power supply will be required to compensate for the reduction in magnet current. The superconducting rectifiers consists of two identical full-wave rectifiers connected in series. The main components of each rectifier are a toroidal superconducting setup transformer and two thermally controlled switches. The test results using a 47.5-mH-load magnet at 0.2 Hz and 0.5 Hz operations are described. To estimate the characteristics of the superconducting rectifier, the authors have developed a simulation code. From the experiments and the simulations, the transfer efficiency is determined

Keywords

power supplies to apparatus; rectifying circuits; superconducting devices; switches; 0.2 Hz; 0.5 Hz; 47.5-mH-load magnet; AC loss; characteristics; full-wave rectifiers connected in series; magnetic levitation of trains; magnetically levitation trains; ohmic loss; persistent current mode; resistive joints; simulation code; small cryogenic power supply; superconducting magnets; test results; thermally controlled switches; toroidal superconducting setup transformer; transfer efficiency; two-phase full-wave superconducting rectifier; Circuit faults; Cryogenics; Inductors; Magnetic levitation; Magnetic switching; Power supplies; Rectifiers; Shape control; Superconducting magnets; Switches;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92655

Filename

92655