摘要
为了提高交流永磁同步电机低速运行性能,首先对交流永磁同步电机矢量控制进行分析,对电机控制系统进行建模,推导了矢量控制下电压方程及转矩方程。然后,分析了电机在低速运转时的扰动转矩,为了对该扰动转矩进行观测提出最小维扰动观测器算法,不仅将测得的扰动转矩以前馈的方式反馈至电流环中,同时为了抑制出现大的超调,增加了补偿系数。最后对该算法进行仿真,结果表明：不仅提高了电机低速运行的抗干扰能力,而且改善了电机低速运行性能。
In order to improve the performance of AC permanent magnet synchronous motor at low speed,vector control of AC permanent magnet synchronous motor was analyzed firstly,and the motor control system was modeled,and the voltage equation and torque equation under vector control were deduced.Then,the disturbance torque of the motor running at low speed was analyzed,and in order to observe the torque of the disturbance,a minimum dimensional disturbance observer algorithm was proposed,which not only feedback the measured disturbance torque to the current loop,but also increase the compensation coefficient in order to restrain the large overshoot.The final simulation results showed that the algorithm greatly improved the anti-interference ability of the motor in the low speed running area and improved the performance of the motor at low speed.
作者
孟卓
Meng Zhuo(Shaanxi Vocational and Technical College,Xianyang 712000,China)
出处
《电子测量技术》
2018年第14期41-44,共4页
Electronic Measurement Technology
关键词
交流永磁同步电机
低速
最小维扰动观测器
AC permanent magnet synchronous motor
low speed
minimum dimensional disturbance observer
