【摘要】 由于中小型风冷式电机定子槽内导体分布杂乱无序以及多种不同导热系数的村料的存在,使其热计算复杂而繁琐.本文在分析计算五种典型定子槽导体分布时的发热和温度分布情况的基础上,推算出不同槽满率时表示中小型风冷式电机发热情况的二种等效导热系数,利用它们可以方便地计算出电机定子内的平均温度和最高温度,并通过实验进行验证.更多还原

【Abstract】 The thermal calculation about the medium and pong sized air - cooling machines is heavy and complicated because of the disorder of their stator conductors and the existence of different thermal materials. At first, this paper analyses and calculates the temperature conditions of the five typical kinds of stator conductors’ distributions. Based on this, It derives the two kinds of equivalent thermal conductivities which can be used in the thermal calculation of the machines and corresponding to the different slot space -factor ,there are different values of them. With the help of them,we can calculate the average and maximal values of the stator temperature conveniently. Finally,the feasibility of the equivalent thermal conductivities were verified through testing.更多还原