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

fYear

2001

fDate

37012

Firstpage

105

Lastpage

114

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICPS.2001.966519

Filename

966519