Title :
A comparative study between copper and aluminum induction squirrel cage constructions
Author :
Yabiku, Renato ; Fialho, Rafael ; Teran, Luis ; Santos, Alexandre ; Rangel, Estellito, Jr. ; Dutra, Diógenes
Author_Institution :
GEVISA GE Motors, Campinas, Brazil
Abstract :
This paper compares different squirrel cage designs under starting and running performance. Inrush current, torque, stall time, maximum number of consecutive starts, efficiency, power factor, critical speed and cage stress are discussed along the paper while considering aluminum and a copper alloy cages. For the sake of comparison two machines were selected to perform the study - one 4-pole 6500 HP and one 18-pole 3500 HP. In addition, procedures of repairing fabricated copper and aluminum cages are discussed.
Keywords :
aluminium alloys; copper alloys; design engineering; maintenance engineering; power factor; squirrel cage motors; starting; torque; aluminum alloy cages; aluminum induction squirrel cage construction; cage stress; copper alloy cages; copper induction squirrel cage construction; critical speed; inrush current; power factor; stall time; torque; Aluminum; Copper; Materials; Rotors; Stator windings; Stress; Torque; Bar; Cage; End Ring; Repair; Stall; Starting; Temperature;
Conference_Titel :
Petroleum and Chemical Industry Conference (PCIC), 2010 Record of Conference Papers Industry Applications Society 57th Annual
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-6800-3
DOI :
10.1109/PCIC.2010.5666832
