Title :
Large superconducting DC drives with separate torque reaction windings
Author :
Spooner, Edward ; Chalmers, Brian
Author_Institution :
Sch. of Eng., Durham Univ., UK
Abstract :
A slotless armature DC motor with multiplex winding can be designed for higher power rating than 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 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; electric propulsion; magnetic flux; ships; superconducting machines; torque; 20 MW; commutation flux; interpole region; iron-free machine; lightweight machine; multiplex winding; power rating; reaction torque; ship propulsion motor; slotless armature DC motor; superconducting DC drives; torque reaction windings; torque tube; Armature; Commutation; DC motors; Design engineering; Laboratories; Machine windings; Marine vehicles; Power engineering and energy; Propulsion; Torque;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377483
