基于超前角结合MTPV的SPMSM复合弱磁控制策略  

A SPMSM Hybrid Flux-weakening Control Strategy Based on Lead Angle Combined with MTPV

作　　者：谢明睿 赖纪东 苏建徽[1] 周晨光 XIE Mingrui;LAI Jidong;SU Jianhui;ZHOU Chenguang(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009)

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《电气工程学报》2022年第3期114-121,共8页Journal of Electrical Engineering

基　　金：中央科研基本业务费支持(PA2020GDGP0053);高等学校学科创新引智计划(BP0719039)资助项目。

摘　　要：表贴式永磁同步电机无限转速系统,恒功率弱磁升速下若要进一步提高转速,需要切换控制策略使其工作于深度弱磁区,切换点准确与否直接影响控制稳定性。首先通过失控分析,明确了恒功率弱磁区到深度弱磁区的最佳切换点,然后基于最佳电流轨迹,提出了一种超前角结合MTPV的复合弱磁控制策略,实现了dq轴电流同时控制,且控制算法简洁,最后通过仿真和试验验证了控制策略的有效性。In the infinite speed system of surface permanent magnet synchronous motor,to further improve the speed in constant power flux-weakening operating region,it is necessary to switch the control strategy to make it work in the deep flux-weakening operating region.Whether the switching point is accurate or not directly affects the control stability.First,the out-of-control analysis is carried out,then the optimal switching point is identified between the constant power flux-weakening operating region and deep flux-weakening operating region.Besides,according to the optimal current trajectory,a hybrid flux-weakening control strategy based on lead angle combined with MTPV is proposed to realize the simultaneous control of d,q-axis current,and the control algorithm is simple.Finally,the effectiveness of the control strategy is verified by simulation and experiment.

关 键 词：无限转速系统 失控分析 最佳切换点 复合弱磁控制策略 

分 类 号：TM351[电气工程—电机]