摘要
采用微分几何多输入、多输出线性化理论对多变量、非线性的异步电机进行线性化,最终得到两个相互独立的转子磁链和转子转速二阶子系统,实现了异步电机输入、输出的解耦。线性化后的系统采用线性系统状态反馈极点配置理论给予求解。仿真研究证实了,当转子磁链发生变化时,电机转速不会改变,实现了两者之间的解耦,系统具有良好的动静态性能。
According to the fact that synchronous motor is a multivariable, nonlinear controlled object, the nonlinear control strategy based on theory of differential geometry was applied to linearize it. Two separate 2-order rotor flux and rotor speed subsystems are presented, furthermore, the input-output of the asynchronous motor system was linearized. The linearized systems can be solved with the linear system state variable feedback pole assignment theory. In the simulation, the speed keeps constant while the rotor flux changes, the dynamic decoupling of the two subsystems was realized, the system shows good dynamic and static performances.
出处
《大电机技术》
北大核心
2010年第4期31-34,37,共5页
Large Electric Machine and Hydraulic Turbine
关键词
异步电机
反馈线性化
解耦控制
极点配置
asynchronous motor
feedback linearization
decoupling control, pole assignment
