doi:10.16186/j.cnki.1673-9787.2020.3.14

Received:2019/08/16

Revised:2019/10/25

Published:2020/05/15

Study on PMSM fractional-order model reference adaptive speed control system

REN Jinxia, HUANG Yipei, JIANG Mengqian

College of Electrical Engineering and Automation， Jiangxi University of Science and Technology， Ganzhou 341000 ， Jiangxi， China

Abstract:Permanent magnet synchronous motors （ PMSM ） are widely used in high performance servo and other industrial applications due to their high power density and high efficiency. Aiming at the problem that the permanent magnet synchronous motor is susceptible to external disturbances to cause the changing of the rotational speed， a model reference adaptive method based on fractional-order Lyapunov stability theory was proposed to estimate the rotational speed. Firstly， the reference model and the adjustable model were established based on the current model of PMSM ， then the rotational speed error information was obtained by using the current output estimated error of the reference model and the adjustable model， and the speed was used as an adjustable parameter. Finally， the fractional-order Lyapunov stability theory was applied to design the fractional-order adaptive law to instead of the PI control in the traditional adaptive law， and a new speed estimation formula was obtained. The simulations were carried out in the MATLAB/Simulink environment， and the simulation experiments were carried out under different working conditions. The results showed that the proposed method could estimate the motor speed well. The dynamic performance index and steady state performance index of permanent magnet synchronous motor were improved， and the specd lontrol system had better robustness.

Key words:permanent magnet synchronous motor;fractional-order;Lyapunov stability theory;model reference adaptive control

PMSM分数阶模型参考自适应调速系统研究_任金霞.pdf