大型汽轮发电机端部电磁场引起的定子铁心边端和端部结构件的发热是危及电机安全正常运行的重要因素。为了正确认识电机端部电磁场,设计合理的端部结构以改善电机端部的发热状况,国内外各电机厂都在研究电机端部电磁场的分布。这一般有三种办法:(1)真机实测,(2)模拟试验,(3)用计算机进行计算。由于真机实测不能随意进行,不能作出预先估计,模拟试验又只能考虑二维场,误差较大,所以端部电磁场计算有其独特的优点。在国外,英、美、日、苏等国,计算都成为分析电机端部 The heat generated by the end of the stator core and the end structure caused by the end electromagnetic field of the large turbine generator is an important factor that endangers the safe operation of the motor. In order to correctly understand the electromagnetic field at the motor end and to design a reasonable end structure to improve the heat generation at the end of the motor, various domestic and foreign motor manufacturers are studying the distribution of the electromagnetic field at the motor end. This generally has three ways: (1) real machine measured, (2) simulation test, (3) calculated with a computer. As the real machine can not be measured at random, can not make a prior estimate, the simulation test can only consider the two-dimensional field, the error is large, so the end of the electromagnetic field calculation has its own unique advantages. In foreign countries, Britain, the United States, Japan, the Soviet Union and other countries, the calculation has become the analysis of motor ends