凸极同步发电机空载下的气隙磁场波形特征系数及转子温度场的数值计算  

Coupled Numerical Calculation of Wave Shape Eigen Coefficient of Air-gap Magnetic Field and Rotor Temperature Field of a Salient Pole Synchronous Generator

作　　者：南日山[1] 张东[1] 李伟力[2] 

机构地区：[1]哈尔滨理工大学,黑龙江哈尔滨150040 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《大电机技术》2003年第4期23-26,共4页Large Electric Machine and Hydraulic Turbine

摘　　要：本文在考虑匝间绝缘的情况下采用有限元法对定子具有分数槽绕组的凸极同步发电机的气隙磁场进行了数值计算。采用付立叶谐波分析的方法把气隙磁密分解为空间基波和一系列谐波,进而计算出气隙磁场波形特征系数。通过对气隙磁场的分析可以计算出转子表面损耗,进而计算出转子的温度场分布。以龙羊峡320MW发电机为例进行了计算,将理论计算结果与试验结果进行了比较,验证了计算的准确性。The air-gap magnetic field of a salient pole synchronous generator whose stator slot is fractional with the consideration of turn insulation is calculated by the finite element method in this paper. The Fourier analysis method is applied to decompose the air-gap magnetic density into the basic wave and a series of harmonic and wave shape eigen coefficient of air-gap magnetic field are calculated. Through analyzing the air-gap magnetic field, stray loss on the surface of rotor can be worked out and moreover temperature field distribution in rotor can be obtained. Longyang Gorge 320MW hydrogenerator is taken for example and the calculating results and the measured results are compared to test the veracity of calculation .

关 键 词：凸极同步发电机 气隙磁场 数值计算 波形特征系数 转子 温度场 

分 类 号：TM341[电气工程—电机]