外部常值干扰下的永磁同步电机速度环滑模控制方法  

Speed Loop Sliding Mode Control Method of Permanent Magnet Synchronous Motor Under External Constant Disturbance

作　　者：黄国凯[1] HUANG Guokai(School of Automotives,Fujian Chuanzheng Communications College,Fuzhou 350007,China)

机构地区：[1]福建船政交通职业学院汽车学院,福州350007

出　　处：《重庆科技学院学报(自然科学版)》2023年第6期100-106,共7页Journal of Chongqing University of Science and Technology:Natural Sciences Edition

基　　金：2023年福建省交通运输科技项目“智慧交通自驱传感器的器件材料关键技术研发”(XY202305)。

摘　　要：为提升永磁同步电机(PMSM)的抗干扰能力和运行稳定性,提出外部常值干扰下的PMSM速度环滑模控制方法,在静止和旋转2种坐标系下对PMSM的动力学特性进行分析。通过外部常值扰动补偿观测器估算转矩观测结果,并将其转换成补偿电流,同时估算外部常值干扰的扰动量,并将结果反馈至速度控制器中。速度控制器依据补偿电流的计算结果和转子位置的估计结果完成对PMSM电流环、速度环的控制。测试结果表明,此方法可精准估计干扰扰动量和转子的位置,实现对PMSM速度环、电流环的有效控制,同时可降低控制电流的脉动,满足控制标准。To improve the anti-interference ability and motion stability of permanent magnet synchronous motor(PMSM),a sliding speed loop mode control method for PMSM under external constant disturbance is proposed.The method is applied to analyze the dynamic characteristics of PMSM under both stationary and rotating coordinate systems.The observation results of the external constant disturbance compensation observer estimating the torque in the non singular terminal speed loop sliding mode control method is converted into compensation current.At the same time,the disturbance amount of external constant disturbance is estimated and fed back to the speed controller in the method.The speed controller achieves the control of the current loop and speed loop based on the calculation results of the compensation current and the estimation results of the rotor position.The test results show that this method can accurately estimate the disturbance amount and rotor position,achieve the control of the motor speed,and complete current control,reducing the pulsation of the control current and meeting the control standards.

关 键 词：外部常值干扰 永磁同步电机 速度环 滑模控制 补偿电流 扰动量 

分 类 号：TM341[电气工程—电机]