基于转子磁链观测的无速度传感器PMSMDTC  

Rotor flux observation based sensorless DTCPMSM

作　　者：孙丹[1] 贺益康[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2006年第7期1276-1280,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50507017)

摘　　要：针对常规永磁同步电机(PMSM)直接转矩控制(DTC)系统转矩、磁链脉动大的问题,引入了模糊逻辑思想,根据PMSM DTC的系统特性设计了专门的模糊逻辑控制器,该控制器采用磁链幅值误差、转矩误差以及磁链空间位置作为输入量,选取电压矢量作为输出量对电机进行直接控制.在此基础上根据所提出的PMSM模糊DTC系统的特点研究了基于转子磁链观测的速度估计策略,讨论了无速度传感器PMSM模糊DTC系统的实现方式.仿真和实验结果验证了这种基于转子磁链观测的PMSM模糊DTC系统在动、静态两方面均具有更好的性能,且不增加系统结构和控制的复杂性,是一种具有实用前景的适用于PMSM DTC的无速度传感器控制策略.Fuzzy logic concept was introduced to solve large flux linkage ripple and torque pulsation problems in the conventional permanent magnet synchronous motor （PMSM） direct torque control （DTC） system. A specific fuzzy logic controller （FLC） was designed according to the feature of the PMSM DTC system. The flux linkage error, torque error and flux linkage angle were selected as the inputs of FLC, and voltage vectors as the output to control the motor directly. A rotor flux linkage observation based sensorless strategy was investigated considering the characteristics of the proposed PMSM fuzzy DTC system. The sensorless PMSM fuzzy DTC system was verified to produce better dynamic and steady state performance by simulation and experimental studies. Moreover, it did not impose extra burden on the basic DTC system, and was a sensorless PMSM DTC strategy of practical potential.

关 键 词：永磁同步电机 直接转矩控制 模糊逻辑 无传感器 磁链 

分 类 号：TM302[电气工程—电机] TM351