大型同步电动机端部电动力仿真分析

Simulation and Analysis of Electromagnetic Force on Stator End-Windings of Large Synchronous Motor

采用三维有限元仿真技术对电机稳态和短路工况下的端部电动力分布特性展开研究。为分析短路工况下大型同步电机的端部电动力,通过Simulink仿真模型分析了大型同步电机短路过程中瞬态电流冲击。进而,将最大瞬态电流冲击时刻的三相电流作为激励输入,采用三维有限元模型仿真技术分析该工况下的电机绕组端部磁场以及电动力分布。

The distribution characteristics of electromagnetic force on stator end-windings of large synchronous motor under steady and short-circuit conditions was researched with the three-dimensional finite element simulation technology. To analyze the electromagnetic force on stator end-windings of large synchronous motor under short-circuit condition, the Simulink simulation model of large synchronous motor firstly was developed to obtain the maximum transient current in the short circuit case. Further, the three phase current of the maximum transient current impulse time was input as the extreme condition, and the magnetic field and electromagnetic force distribution on stator end-windings were analyzed with the three-dimensional finite element model simulation technique.