Large superconducting DC drives with separate torque reaction windings

Author

Spooner, Edward ; Chalmers, Brian J.

Author_Institution

Sch. of Eng., Durham Univ., UK

Volume

31

Issue

6

fYear

1995

Firstpage

1297

Lastpage

1305

Abstract

A slotless-armature DC motor with multiplex winding can be designed for higher power rating compared to one with a conventional slotted armature. Conventional field systems would be very heavy and a superconducting field winding is considered in order to create an iron-free stator and lightweight machine. The superconducting field winding is relieved of reaction torque by means of a special winding attached to a separate torque tube. The reaction winding is also designed to establish the necessary commutation flux in the interpole region. Test results from a small laboratory machine demonstrate the principle of the proposed torque reaction winding. A design for a 20 MW ship propulsion motor is presented

Keywords

DC motor drives; commutation; machine windings; ships; superconducting machines; torque; 20 MW; commutation flux; interpole region; iron-free stator; multiplex winding; ship propulsion motor; slotless-armature DC motor; superconducting DC drives; torque reaction windings; torque tube; Armature; Coils; Commutation; Current density; DC motors; Laboratories; Machine windings; Marine vehicles; Propulsion; Torque;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.475719

Filename

475719