永磁同步电机调速系统混合滑模控制算法

为提高基于空间电压矢量调制(Space Voltage Vector Modulation,SVPWM)的永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)直接转矩控制系统性能,设计改进的幂次指数趋近律(ImprovedPowerExponentReachingLaw,IPERL)并应于永磁同步电机转速控制,利用Super-twisting滑模策略控制电机转矩角差生成环节,二者组成混合滑模控制器。此外,详细分析算法控制性能,引入积分滑模和模糊自适应方法优化趋近律参数,实现参数在线调整。仿真实验表明,与PI控制、幂次指数趋近律相比,该方法在电机空载起动和外加干扰等情况下均能使控制精度和鲁棒性显著提升。

Hybrid Sliding Mode Control Algorithm for Speed Control System of PMSM

To improve the performance of permanent magnet synchronous motor(PMSM)direct torque control system based on space voltage vector modulation(SVPWM),the improved power exponent reaching law(IPERL)is utilized to control speed of PMSM,and super-twisting sliding mode strategy is applied to control the error of the torque angle.Then the mixed sliding mode controller is set up.The algorithm control performance is also analyzed in detail.The integral sliding mode surface and fuzzy adaptive method are introduced to optimize the unknown parameters of IPERL.Simulation results show that compared with the PI control and power exponent reaching law,this method can significantly improve the control accuracy and robustness with no-load starting and external disturbance.