Estimation of Insulation Life of Inverter- Fed Induction Motors
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
PEDSTC01_060
تاریخ نمایه سازی: 21 تیر 1391
Abstract:
This paper is concerned with the effect of power system harmonics and voltage unbalances on the thermal aging of the insulation of electric motors. A thermal model is proposed where the motor is divided geometrically into a number of lumped components, with interconnections to neighboring components through a linear mesh of thermal impedances. The lumped parameters are derived from entirely dimensional information, the thermal properties of the materials used, and constant heat transfer coefficients. Arrhenius chart is then used to estimate motor insulation remaining life. The proposed approach is used to determine the effect of supply harmonics and voltage unbalances on the useful life of a three phase induction motor and also validated by experimental results.
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Authors
Movahed
Farab Company, Tehran, Iran
Oraee Mirzamani
Department of Electrical Engineering, Sharif University, Iran
rajabi
Tehran Regional Electric company, Tehran, Iran
daneshvar
Department of Electrical Engineering, Sharif University, Iran.