大型汽轮发电机定子端部磁场与参数的准确计算与分析  

Accurate Calculation of Stator End-leakage Magnetic Field and Parameters Analysis for Large Turbogenerator

作　　者：梁艳萍[1] 王哈力[1] 李金香[2] 

机构地区：[1]哈尔滨理工大学,黑龙江哈尔滨150040 [2]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040

出　　处：《大电机技术》2005年第6期1-4,共4页Large Electric Machine and Hydraulic Turbine

摘　　要：建立了用三维正弦行波磁场有限元法计算汽轮发电机定子端部磁场的数学模型,提出了一种能准确反映定子绕组端部渐开线分布的电流密度的离散表达式,给出了用能量法计算定子端部漏抗的计算公式,并在此基础上以一台600MW汽轮发电机为例分析端部结构件中涡流,定、转子铁心长度等因素对定子端部漏抗的影响,得出了一些有价值的结论。The mathematical model to calculate stator end-leakage magneuc field of large turbogenerator by 3D sinusoidal traveling wave magnetic field FEM is presented, then the discrete formula of current density in stator end winding and formulae to determine stator end-leakage reactance are derived. Taking 600MW turbogenerator as an example, the influence of some factors such as length of stator and rotor are discussed.

关 键 词：汽轮发电机 端部磁场 漏抗 数值计算 

分 类 号：TM153[电气工程—电工理论与新技术]