永磁同步电机新型降阶磁链观测器设计

A Novel Reduced-Order Flux State Observer for Permanent Magnet Synchronous Motor

为了提高永磁同步电机无传感器控制系统的动态品质和控制性能,提出了一种基于降阶磁链观测器算法的转子位置和转速信息估计方法。该算法基于α-β静止坐标系的数学表达,利用使用降阶状态观测器的基本控制原理实现了在线实时估计转子磁链的数值,并基于锁相环技术实现转子位置和转速的估计。最后采用Matlab仿真软件搭建了系统的仿真模型,通过大量仿真结果验证了该算法具有较好的在线估计性能和动态性能,能够快速跟踪实际转速和转子位置信息。

In order to improve the dynamic quality of the sensorless control system of permanent magnet synchronous motor,a method of rotor position and speed information estimation based on the reduced order flux observer algorithm is proposed in this paper. The algorithm estimates the rotor flux in real-time using the reduced-order state observer and estimates the rotor position and rotation speed based on the phase-locked loop technique. Finally,a simulation model of the system is set up by using Matlab simulation software. The simulation results show that the algorithm has better on-line estimation performance and dynamic performance,and can quickly track the actual speed and rotor position information.