一种改进定子磁链观测的永磁同步电机控制系统  

A Permanent Magnet Synchronous Motor Control System Based on Improved Stator Flux Observation

作　　者：马少才 MA Shaocai(Shanghai Ruking Intelligent Control Technologies Co.,Ltd.,Shanghai 200438,China)

机构地区：[1]上海儒竞智控技术有限公司,上海200438

出　　处：《电工技术》2022年第6期19-22,共4页Electric Engineering

摘　　要：定子磁链大多采用反电动势积分而得,为了改善纯积分环节导致输出磁链的饱和与偏移,提出了一种新的定子磁链观测方法。根据定子磁链与反电动势之间的幅值和相位关系,可计算出定子磁链的幅值和相位。通过定子磁链计算得到转子磁链矢量,进一步可得到电机速度、位置以用于永磁同步电机矢量控制。该方法原理简单、计算量小,易于工程实现。仿真结果表明了该改进定子磁链观测方法的可行性与有效性。The stator flux linkage is mostly obtained by integrating the back electromotive force(BEMF).In order to improve the saturation and excursion of output flux caused by pure integration,a novel scheme is proposed.Based on the relationship of amplitude and phase between BEMF and stator flux linkage,stator flux linkage could be calculated.The rotor flux linkage vector is obtained through the stator flux linkage calculation,and the motor speed and position can be further obtained for the vector control of the permanent magnet synchronous motor.The method has the advantages of simple principle,small amount of calculation and easy engineering implementation.The simulation results show the feasibility and effectiveness of the improved stator flux observation method.

关 键 词：永磁同步电机 定子磁链 无速度传感器 电压模型 

分 类 号：TM341[电气工程—电机]