Effect of combined velocity and pressure on life time of carbon brushes

被引：9

作者：

El-Refaie, AMF ^{[1
]}

Aziz, MMA ^{[1
]}

Khorshid, SAY ^{[1
]}

Abu Elzahab, EEM ^{[1
]}

机构：

[1] Cairo Univ, Fac Engn, Cairo, Egypt

来源：

IEEE TRANSACTIONS ON ENERGY CONVERSION | 2000年 / 15卷 / 02期

关键词：

induction motors; carbon brushes; sliprings; contact resistance; contact pressure; speed; wear; failure;

D O I：

10.1109/60.866996

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The value of contact resistance between copper sliprings and carbon brushes, in wound-rotor induction motors, has a profound effect on the performance of these machines, The increase of this resistance due to bad contact may be detrimental. In this paper, an important factor affecting the resistance is introduced. This is the PV factor (product of contact pressure and peripheral speed), It represents the frictional power density at the interface; and it is also an indication of the volumetric or linear wear rate. A relation between the operational life time of brushes and the PV factor is experimentally deduced.

引用

页码：176 / 180

页数：5