基于定子磁链轨迹的PMSM矢量控制方法  

Vector Control Method for PMSM Based on Stator Flux Trajectory

作　　者：张朝阳 文宇良 黄佳德 郑汉锋 ZHANG Zhaoyang;WEN Yuliang;HUANG Jiade;ZHENG Hanfeng(CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]中车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《机车电传动》2019年第1期23-29,共7页Electric Drive for Locomotives

基　　金：国家重点研究开发计划项目(2017YFB1200903);中国铁路总公司科技研究开发计划课题(2015J010-A)

摘　　要：针对优化同步PWM(Pulse Width Modulation)用于闭环矢量控制进行快速动态调节时容易发生过流失控的问题,提出了一种基于优化定子磁链轨迹闭环控制的永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)矢量控制策略。简述了谐波电流最小优化PWM的原理,给出了优化开关角,建立了优化开关角与对应优化磁链轨迹之间的数学关系。基于包含异步调制与同步调制的混合调制策略,构建了PMSM最大转矩电流比矢量控制系统,针对同步调制模式,重点介绍了利用优化磁链轨迹闭环控制来实现系统快速动态调节的方法。通过仿真和试验验证了优化磁链轨迹闭环控制方法。In order to solve the problem that optimal synchronous PWM was prone to loss control when it was used for fast dynamic regulation of closed-loop vector control, a vector control strategy of permanent magnet synchronous motor based on optimal stator flux trajectory closed-loop control was proposed. The principle of harmonic current minimum optimization PWM was briefly described, the optimal switching angle was provided, and the mathematical relationship between the optimal switching angle and the corresponding optimal flux trajectory was established. Based on the hybrid modulation strategy including asynchronous modulation and synchronous modulation, the vector control system of PMSM’s maximum torque-current ratio was constructed. Aiming at the synchronous modulation mode, the method of realizing fast dynamic regulation of the system by optimizing the closed-loop control of flux trajectory was mainly introduced. The closed-loop control method of optimizing flux trajectory was verified by simulation and experiment.

关 键 词：优化同步调制 永磁同步电机 矢量控制 优化磁链轨迹 

分 类 号：TM351[电气工程—电机] TM464