基于动态方程的同步电机V形曲线解析研究  

Analytic Research of V-curve for Synchronous Electric Machine Based on Dynamic Equations

作　　者：高仕红[1] 

机构地区：[1]湖北民族学院信息工程学院,湖北恩施445000

出　　处：《湖北民族学院学报（自然科学版）》2009年第4期423-426,457,共5页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：湖北省教育厅科学研究计划项目(B20082908);湖北民族学院教学研究项目(2008JY016)

摘　　要：同步电机在电网上运行时,其V形曲线是同步电机的重要运行曲线,能表明如何合理地进行同步电机无功功率调节.同步电机V形曲线的获取一般采用间接法或直接负载法,并且为了分析简便,常忽略同步电机的电枢电阻.以隐极同步电机为例,依据同步电机的动态方程获得了V形曲线、静态稳定极限曲线和cosφ为定值时is与if关系曲线的解析式,并考虑了电枢电阻对它们的影响.利用Matlab7.1实现了同步电机无功功率调节的仿真分析,仿真结果与理论分析相吻合.V-curve for synchronous electric machine is an important curve while it is connected to the grid,which shows how to rationally regulate its reactive power.Acquisition of V-curve for synchronous machine commonly adopts indirect method or direct load method,and often ignores armature resistance in order to analyze simply.Take example for round-rotor synchronous electric machine,analytic formulas for V-curve,static stability limit curve and curve of is about if when cosφ is constant are obtained by dynamic equations of synchronous electric machine,and the influences of armature resistance on them are considered.Reactive power regulation of synchronous electric machine is simulated by using Matlab7.1/Simulink6.3,simulative results are consistent with theoretic analysis.

关 键 词：隐极同步电机 V形曲线 电枢电阻 无功功率调节 

分 类 号：TM307[电气工程—电机]