Development and electrical test of a 30 kVA class fully superconducting generator

Author

Tsukamoto, O. ; Amemiya, N. ; Yamagishi, K. ; Takao, T. ; Akita, S. ; Torii, S. ; Ohishi, K. ; Shimizu, H.

Author_Institution

Yokohama Nat. Univ., Japan

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2308

Lastpage

2311

Abstract

We are developing a 4 pole 50 Hz 30 kVA class fully superconducting generator to investigate the characteristics of superconducting armature windings subject to a rotating magnetic field. Compared with other fully superconducting generators that have been developed and tested, our machine is designed to obtain a higher armature current. It is generally observed in coils wound from AC superconducting cable that the AC quench current of the coil is much lower than its DC quench current. Countermeasures against these AC current degradation phenomena were developed and applied to the AC cable and armature winding of our generator. Results of the electrical tests of the generator are presented and the validity of the countermeasures is discussed

Keywords

AC generators; machine testing; machine windings; superconducting machines; superconducting magnets; 30 kVA; 50 Hz; AC current degradation phenomena; AC superconducting cable; DC quench current; armature current; fully superconducting generator; superconducting armature windings; AC generators; Circuit testing; Conductors; Degradation; Machine windings; Superconducting cables; Superconducting coils; Superconducting filaments and wires; Thermal conductivity; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305737

Filename

305737