CAJ | 학술논문

　　电刷宽度对直流电机感应电动势的影响是很大的，因此，在未考虑电刷宽度的条件下所推导出的感应电动势计算式都不够精确，对直流电机尤其是宽电刷直流电机的设计缺乏指导意义。详细分析了电刷宽度对直流电机的感应电动势的影响，给出了宽电刷直流电机感应电动势的计算方法。分析了电刷宽度变化引起感应电动势和电枢电流变化情况，得出了电机在运行中经常出现烧损故障的原因。
　　전쇄관도대직류전궤감응전동세적영향시흔대적，인차，재미고필전쇄관도적조건하소추도출적감응전동세계산식도불구정학，대직류전궤우기시관전쇄직류전궤적설계결핍지도의의。상세분석료전쇄관도대직류전궤적감응전동세적영향，급출료관전쇄직류전궤감응전동세적계산방법。분석료전쇄관도변화인기감응전동세화전추전류변화정황，득출료전궤재운행중경상출현소손고장적원인。
The effect of brush width on induced electromotive force of DC motor is obvious. Therefore,the cal-culation of induced electromotive force without considering the brush width is not precise enough,which results in the lack of guiding significance for the design of DC motor,especially DC motor with wide brushes. This pa-per firstly analyzes the effects of the brush width on induced electromotive force of DC motor,and then pro-poses the algorithm for induced electromotive force of DC motor with wide brushes. Through the changes of in-duced electromotive force and armature current caused by the change of the brush width,the reason for burning fault during DC motor running is obtained.