300 MW汽轮发电机电磁性能的有限元仿真计算

Finite Element Simulation of Electromagnetic Properties for 300 MW Turbogenerator

摘要: 本文利用Ansoft Maxwell有限元软件对一台300 MW汽轮发电机的空载特性、短路特性以及气隙磁密、感应电势、电磁转矩和铁耗等电磁参数进行了计算分析，采用精度较高的Bertotti铁耗模型得到定子轭部铁耗沿径向分布状况，为发电机温度场计算以及降耗措施提供理论依据，同时为进一步研究汽轮发电机单机运行、并网运行及各种故障状态提供参考依据。

Abstract: In this paper, no-load characteristic, short-circuit characteristic and air-gap flux density, EMF, electromagnetic torque and core losses of a 300 MW turbogenerator are calculated and presented by using the Ansoft Maxwell finite element software. The coreloss distributions in stator yoke along radial are simulated by using the accurate Bertotti model. All the results can provide theoretical foundation for temperature field calculation and reducing consumption measures, and at the same time provide some references for the further study of unit operation and parallel operation as well as various fault diagnosis of the turbogenerator.