Title :
Induction motor thermal aging caused by voltage distortion and imbalance: loss of useful life and its estimated cost
Author :
De Abreu, Jose G. ; Emanuel, Alexander
Abstract :
This paper reports the effect of voltage distortion and imbalance (VDI), on the thermal aging of the insulation of low voltage induction motors. The study is based on a detailed thermal modeling of actual motors in the 2 to 200 HP range. The dollar value of the useful life lost was estimated for different VDI conditions. Two important conclusions were reached: First; voltage subharmonics have a dramatic effect on motor thermal aging. Second; the overall cost of motor loss of life due to harmonic pollution and voltage imbalance, in the US today, is estimated to be in the range of 1 to 2 billion dollars per year
Keywords :
ageing; costing; equivalent circuits; induction motors; losses; power supply quality; power system harmonics; rotors; stators; thermal analysis; 2 to 200 hp; cost estimation; harmonic pollution; induction motor thermal aging; inter-bar power loss; iron losses; loss of useful life; low voltage induction motors; power quality economics; pulsating losses; rotor cage losses; squirrel-cage motor failure; stator core losses; stator winding losses; surface losses; thermal equivalent circuit; thermal modeling; voltage distortion; voltage imbalance; voltage subharmonics; Aging; Bars; Chemicals; Dielectrics and electrical insulation; Induction motors; Life estimation; Power system harmonics; Stators; Torque; Voltage;
Conference_Titel :
Industrial and Commercial Power Systems Technical Conference, 2001. Conference Record. Papers Presented at the 2001 Annual Meeting. 2001 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-7055-4
DOI :
10.1109/ICPS.2001.966519
