本文为美国科罗拉多州立大学（作者：Murad Altaira）的硕士论文，共64页。
三相鼠笼式异步电动机（SCIMs）效率的优化对节约电能消耗起着重要作用。本文的目的是在电机运转速度大于正常工作下最大效率的运转速度时，使得三相效率最大化，即利用MATLAB/SIMULINK仿真降低对定子的额定电压。阐述了三相（SCIM）的等效电路和参数选择。采用MATLAB/SIMULINK对电机参数进行确定，同时对不同负载下的三相（SCIM）进行仿真。阐述了降低电压对电机特性如电机产生的转矩、功率因数、无功功率、视在功率、输出功率、转子转速和磁化电流的影响。
Optimizing the efficiency of three phase squirrel cage induction motors(SCIMs) plays a big role in saving electric energy consumption. The purpose ofthis thesis is to maximize the efficiency of three phase (SCIM) when it runs atspeeds greater than the speed at which the efficiency is maximum during normaloperation, i.e., rated voltage by decreasing the applied voltage to the statorusing MATLAB/SIMULINK. Equivalent circuit and parameter identification of threephase (SCIM) are explained. MATLAB/SIMULINK is employed to identify the motor parametersand to simulate a three phase (SCIM) under different loads. The effect ofreducing the voltage on motor characteristics such as the produced torque bythe motor, power factor, reactive power, apparent power, output power, rotorspeed and magnetizing current is explained.
1 引言
2 三相感应电动机的等效电路及参数选择
3 降低定子电压对电机特性影响的研究
4 仿真结果与讨论
5 结论与未来工作展望
附录A 三相鼠笼式异步电动机特性的Matlab源代码
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