Sensorless Field Orientation Control of Permanent Magnet Synchronous Motor Based on ISTSMC and Improved EKFSMO

doi:10.11985/2024.01.019

Abstract

Abstract:

In the drive system of permanent magnet synchronous motor(PMSM) controlled by inner-loop field orientation control(FOC) and outer-loop classical proportional integral(PI), it is prone to appear uncertain defects such as low detection accuracy of external disturbance, chattering and large overshoot of speed loop. In order to solve the chattering problem of PI control and improve the anti-interference ability of the system, an integral super twisting sliding mode controller(ISTSMC) is proposed. In order to realize sensorless control and online estimation of motor speed and position, the sliding mode observer based on extended Kalman filter(EKF) is also designed，and a piecewise sinusoidal function is designed to replace the traditional sgn function based sliding mode observer to reduce chattering. In Matlab/Simulink simulation, the speed response and detection accuracy of the system under various fault disturbances, reverse operation and load disturbances are analyzed. The results prove the feasibility and superior dynamic performance of the proposed system.

Key words: Field orientation control, permanent magnet synchronous motor, integral super twisting sliding mode controller, extended Kalman filter

CLC Number:

TM341

ZHOU Li, LI Jingming, LIU Yiming. Sensorless Field Orientation Control of Permanent Magnet Synchronous Motor Based on ISTSMC and Improved EKFSMO[J]. Journal of Electrical Engineering, 2024, 19(1): 177-186.

Figures/Tables 11

References 20

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序号	参数	数值
1	额定线电压U_dc/V	192
2	额定转速n_N/(r/min)	3 000
3	极对数p	2
4	相电阻R/Ω	0.558
5	d-q轴电感L_d、L_q/mH	0.008 1
6	转子磁链ψ_f/Wb	0.53
7	额定转矩T_e/(N·m)	31.83
8	转动惯量J/(kg·m²)	0.091