双Y移30°六相PMSM的滑模变结构控制技术

Sliding mode variable structure control technique of dual Y shift 30° six-phase PMSM

针对双Y移30°PMSM的基于空间矢量控制的直接转矩控制(SVM-DTC)技术中PI调节器拖慢系统响应速度的问题,提出一种旨在提高系统响应速度的自适应滑模变结构控制技术。根据系统动态变化参数,研究其状态运动轨迹,通过控制量的切换使系统状态沿着其状态运动轨迹运动,系统的状态在参数发生变化或出现外界干扰时有不变性,达到了提高动态响应的目的。最后,在仿真工具中搭建双Y移30°六相PMSM调速系统的仿真模型,仿真结果明该控制方法解决了PI调节器积分环节响应速度慢的问题,电机转速和转矩的超调量较小、鲁棒性好、可靠性高、具有较强的抗扰动性能。验证了所提方法的正确性和有效性。

As the PI regulator in the SVM-DTC control technique of dual Y shift 30 degrees six phase PMSM slows down the system's response speed,an adaptive sliding mode variable structure control technique is proposed to improve the response speed of the system.According to the dynamic change parameters of the system,the motion trajectory of the system was studied.And the state of the system was made move along the sliding surface by switching the control quantity.The state stayed invariant when the parameters change as well as the external disturbance occurs,achieving the purpose of improving system's response.Finally,the simulation model of dual Y shift 30°six-phase PMSM speed control system was established in Matlab/Simulink.The simulation results show that the control method solves the problem of slow response speed of integral part of PI regulator,and the overshoot of motor speed and torque is small.It has good robust ability,high reliability and strong anti-disturbance performance.The correctness and validity of the proposed method.