基于新型等效模糊滑模观测器和改进软件锁相环的永磁同步电机矢量控制

发布时间：2019-03-25 20:20

【摘要】：为准确获取电机转速和转子位置,提出了一种基于新型等效模糊滑模观测器和改进型软件锁相环(SPLL)相结合的控制方法。在传统的等效滑模控制的基础上,通过改变切换函数和将切换增益模糊化,降低了观测器输出振动;同时,改进了等效滑模控制系统,省去了低通滤波器和转子角度补偿环节,简化了系统结构。此外,采用改进型SPLL,克服了电机因自身励磁、磁路等原因产生谐波,导致经dq变换和PI作用后其输出量不再有频率偏差的问题,从而得到更高精度的电机转速。最后,通过仿真验证了该方法较传统方法对电机控制具有使系统响应速度更快、超调更小、对外部的负载扰动和参数鲁棒性更强等优点。
[Abstract]:In order to accurately obtain the speed and rotor position of the motor, a control method based on the combination of a new equivalent fuzzy sliding mode observer and an improved software phase locked loop (SPLL) is proposed. Based on the traditional equivalent sliding mode control, the output vibration of the observer is reduced by changing the switching function and fuzzifying the switching gain. At the same time, the equivalent sliding mode control system is improved, the low-pass filter and rotor angle compensation are omitted, and the structure of the system is simplified. In addition, the improved SPLL, is used to overcome the harmonic caused by the excitation and magnetic circuit of the motor, which leads to no more frequency deviation of the output after dq transformation and PI, so that the motor speed with higher precision can be obtained. Finally, the simulation results show that the proposed method has the advantages of faster response speed, smaller overshoot, stronger robustness to external load disturbance and parameter than the traditional method for motor control.
【作者单位】：上海电力学院自动化工程学院;上海市电站自动化技术重点实验室;同济大学电子与信息工程学院;
【基金】：国家自然科学基金项目(61304134) 上海市重点科技攻关计划项目(14110500700) 上海市电站自动化技术重点实验室项目(13DZ2273800)
【分类号】：TM341;TP273

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