面向状态空间的永磁同步电动机控制器设计

Design of Permanent Magnet Synchronous Motor Controller for State Space

针对传统矢量控制中永磁同步电动机解耦不充分的问题,设计了基于反馈线性化的永磁同步电动机状态反馈控制器。该设计首先利用反馈线性化对内嵌式永磁同步电动机数学模型进行处理,并基于线性化模型,采用线性二次型调节器设计状态反馈控制器;随后采用灰狼优化算法对线性二次型调节器中的加权矩阵Q和R进行优化;最后利用Simulink软件对状态反馈控制器进行仿真,并通过2.2 kW永磁同步电动机实验平台对控制器中的控制算法进行实验验证。结果表明,该控制方法在永磁同步电动机的抗负载扰动和转速跟踪方面有着良好的控制效果,能够保证电动机在变载、变速和正反转情况下稳定运行。

For the problem of inadequate decoupling of permanent magnet synchronous motor in traditional vector control,a permanent magnet synchronous motor state feedback controller based on feedback linearization is designed.Firstly,the embedded permanent magnet synchronous motor model is processed by feedback linearization,and the state feedback controller is designed by linear quadratic regulator based on the linearized model.Secondly,the gray wolf optimization algorithm is used to optimize the weighted matrices Q and R in the linear quadratic regulator.Finally,Simulink is used to simulate the state feedback controller,and the control algorithm in the controller is verified on the 22 kW permanent magnet synchronous motor experimental platform.The results show that the control method has good performance on the antiload disturbance and speed tracking of permanent magnet synchronous motor,and can ensure stability under the conditions of variable load,variable speed and forward and reverse rotation.