Influence of converters on the superconducting field-circuit of a three-phase synchronous generator

Author

Gröter, H.P. ; Lorenzen, H. ; Rehm, W. ; Schweiger, R.

Author_Institution

Inst. of Electr. Machines, Tech. Univ. of Munchen, Germany

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

2480

Lastpage

2483

Abstract

Experimental investigations of the influence of converter feeding the field circuit of a three-phase synchronous generator with a superconducting field winding have been performed. Four converter circuits have been tested: a B6 three-phase bridge, two parallel B6 three-phase bridges, a three-phase bridge with bypass thyristors, and a high-current power-MOSFET converter. Steady-state and transient operation have been tested. There was a special interest in the harmonics generated by the converter circuits and their power dissipation in the low-temperature region. The thermal reaction of the field circuit has also been considered. A method has been developed to prevent the superconducting winding from the quenching in transient operation

Keywords

bridge circuits; machine windings; power convertors; superconducting machines; synchronous generators; thyristor applications; bypass thyristors; converter circuits; harmonics; high-current power-MOSFET converter; low-temperature region; power dissipation; quenching; superconducting field winding; superconducting field-circuit; thermal reaction; three-phase bridge; three-phase synchronous generator; transient operation; Bridge circuits; Circuit testing; Delay estimation; Frequency; Power dissipation; Power system harmonics; Steady-state; Synchronous generators; Temperature; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133721

Filename

133721