A quantative approach to estimate the life expectancy of motor insulation systems

被引：26

作者：

Oraee, H ^{[1
]}

机构：

[1] Sharif Univ Technol, Tehran, Iran

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2000年 / 7卷 / 06期

关键词：

D O I：

10.1109/94.891990

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electric motors represent the largest single load in most power systems. With continuing increase in nonlinear loads, the effects of harmonic contents of power systems on various components is becoming more important. This paper is concerned with the effect of power system harmonics and voltage unbalance on the useful life of electric motors. A simple equivalent circuit is used to calculate the additional heat losses caused by supply distortions. A lumped-parameter thermal network is proposed to calculate the resulting heat distribution within the machine. An 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 unbalance on the useful life of a three phase induction motor and the results are verified experimentally.

引用

页码：790 / 796

页数：7

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