Title :
Air-gap sparking-cause and cure
Author :
Clark, P.E. ; Glew, C.N. ; Regan, R.H.
Author_Institution :
GEC Alsthom Large Machines Ltd., UK
Abstract :
The results from the application of complex parameters derived by 3D finite element techniques to a circuit model representing the rotor of an induction machine, have demonstrated a full understanding of the phenomenon referred to as air-gap sparking. The results have been validated by observation and by extensive testing of full size high voltage motors. Fully insulated bars have been used to eliminate air-gap sparking and this insulation has been tested extensively during direct on-line starts
Keywords :
finite element analysis; induction motors; insulation testing; machine insulation; machine testing; rotors; sparks; 3D finite element technique; air-gap sparking; circuit model; direct on-line starts; high voltage motors; induction machine rotor; insulated bars; testing;
Conference_Titel :
Electrical Safety in Hazardous Environments, 1994., Fifth International Conference on
Conference_Location :
London
Print_ISBN :
0-85296-614-8
DOI :
10.1049/cp:19940390
