Normal propagation velocity and quench energy of the rotor model for a 70 MW class superconducting generator

Author

Shimohata, K. ; Morita, M. ; Yoshimura, Hiroyuki ; Hirao, T. ; Suzuki, K. ; Ueda, A. ; Toyoda, Kentaroh

Author_Institution

Mitsubishi Electr. Corp., Hyogo, Japan

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

175

Lastpage

178

Abstract

A rotor model was fabricated to estimate the performance of the 70 MW class superconducting generator. The normal propagation velocity and quench energy for the rotor model in the rotational field are measured at various rotating speeds. An analytical model is proposed in order to explain the experimental data. In the calculation, the heat transfer and the temperature rise of liquid helium in the rotational field are considered. The calculated results are compared with the experimental data, and these agree well. Therefore it becomes possible to precisely design field windings of superconducting generator.

Keywords

electric generators; rotors; superconducting machines; 70 MW; heat transfer; liquid helium coolant; normal propagation velocity; quench energy; rotational field winding; rotor model; superconducting generator; Conductors; Energy measurement; Machine windings; Resistance heating; Rotation measurement; Rotors; Superconducting coils; Surface resistance; Velocity measurement; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614457

Filename

614457