基于磁链预测的PMSM无磁链环SVM-DTC研究  

Research on SVM-DTC of PMSM Without Flux Linkage Loop Based on Flux Linkage Prediction

作　　者：金振 杨建飞[1,2] 邱鑫 张永民[1] 葛浩锐 白晨光 JIN Zhen;YANG Jian-fei;QIU Xin;ZHANG Yong-min;GE Hao-rui;BAI Chen-guang(School of Electrical and Antomation Engineering,Nanjing Normal University,Nanjing 210023,China;Nanjing Institute of Intelligent High-End Equipment Industry Co.,Ltd.,Nanjing 210042,China)

机构地区：[1]南京师范大学电气与自动化工程学院,南京210023 [2]南京智能高端装备产业研究院有限公司,南京210042

出　　处：《微特电机》2021年第6期44-48,共5页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(51407095,51607094);江苏省自然科学基金项目(BK20151548);六大人才高峰项目(GDZB-043);南京市后补助计划项目(201722046);江苏省研究生实践创新项目(SJCX20_0433,SJCX20_0436);江苏省研究生科研创新项目(KYCX20_1252)。

摘　　要：针对传统无磁链环空间矢量调制直接转矩控制(SVM-DTC)定子磁链直轴分量不可控的问题,提出一种磁链预测的新型无磁链环SVM-DTC。该方法考虑了只施加交轴电压矢量带来的磁链幅值增加的问题,以及转子磁链位置变化带来的增磁效果。通过预测满足转矩控制要求并且定子电流直轴分量为零的目标定子磁链,精确计算出最优参考电压矢量。仿真结果表明,该方法可以同时控制定子磁链交直轴分量,定子磁链幅值随负载进行自适应变化。Aiming at the problem that the direct axis component of stator flux is uncontrollable in traditional space vector modulation direct torque control(SVM-DTC)without flux linkage loop,a novel flux linkage prediction SVM-DTC without flux linkage loop is proposed.This method considers the increase of flux linkage amplitude caused by only applying quadrature axis voltage vector,and the magnetization effect brought by the change of the rotor flux linkage position.The optimal reference voltage vector is accurately calculated by predicting the stator flux linkage that meets the torque control requirements and direct axis component of stator current is zero.The simulation results show that the proposed method can simultaneously control the vertical and horizontal components of the stator flux linkage,and the amplitude of the stator flux linkage changes adaptively with the load.

关 键 词：永磁同步电动机 直接转矩控制 磁链预测 无磁链环 空间矢量调制 

分 类 号：TM351[电气工程—电机]