发电电动机定子端部绕组电磁-结构耦合场计算

Magneto-structural Coupling Field Calculation of Stator End Windings of Generator-Motor

针对发电电动机定子端部绕组在电磁力作用下易发生故障的问题,以广州抽水蓄能电站B厂的发电电动机为例,建立了发电电动机定子端部绕组的三维模型,通过有限元法对模型电磁与结构顺序耦合进行仿真计算,得到了额定运行时电机端部绕组的应力和应变分布。结果表明,该方法能够有效地分析发电电动机定子端部绕组在电磁力作用下的应力应变分布,计算精确度比较高。

According to the fault problem caused by electromagnetic force of end stator winding in generator-motor,taking the generator-motor of Guangzhou pumped storage power station-B for an example,this paper establishes three-dimensional model of the stator end windings of generator-motor.The simulation calculation of the model magneto-structural coupling field was implemented by using finite element method.And then,it got the stress and strain distribution of the stator end winding on the rated operating condition.The results show that this method can analyze the stress and strain distribution of the stator end winding of generator-motor effectively,and it has high computing precision.