基于重复滑膜控制的PMSM的矢量控制系统

针对永磁同步电机(PMSM)在负载突变时产生的抖振现象,文中提出了一种重复滑模控制方法。首先,详细介绍了永磁同步电机的数学模型和滑膜变结构的基本原理,并在PMSM速度环上采用滑膜控制方法代替传统的PI控制。其次,具体分析了重复控制的基本原理,在滑膜控制的基础上加入重复控制,提出了一种新型的重复滑膜控制策略,建立了基于MATLAB/Simulink的电机仿真模型。仿真结果表明,此控制方法在电机转速上升阶段具有较好的系统响应性;在电机突加负载时,电机转速最大突变值比使用滑膜控制时减少了74.55%,且电机恢复到稳定状态用时为使用滑膜控制时的37.5%;验证了所提出的重复滑膜控制方法具有较强的抗负载性和系统稳定性。

Vector Control System of PMSM Based on Repetitive Synovial Control

ing at the chattering phenomenon of permanent magnet synchronous motor (PMSM) when the load was abrupt, a repetitive synovial control method was proposed. Firstly, the article introduced the mathematical model of permanent magnet synchronous motor and the basic principle of synovial variable structure in detail, and a synovial control strategy was applied to replace the traditional PI control in speed loop of PMSM. Secondly, the basic principle of repetitive control was comprehensively analyzed. On the basis of synovial control, repetitive control was added to the control system. And proposed a new type of repetitive synovial control approach, a motor simulation model based on MATLAB/Simulink was established. The simulation result shows that the scheme has better system responsiveness in the rising stage of motor speed; when the motor load is abrupt, the maximum mutation value of motor speed is reduced by 74.55% compared with the use of the synovial control, and the time of motor returns to the stable state also becomes 37.5% of the original; it is verified that the presented repetitive synovial control algorithm has strong load resistance and system stability.