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基于改进滑模观测器的PMSM无速传感控制设计

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针对滑模观测器(SMO)因高频抖振导致电机转子速度和位置难以准确估计,且速度环PI控制器鲁棒性和速度跟踪性能较差的问题,提出一种基于改进滑模观测器的永磁同步电机(PMSM)无速传感控制设计.首先,在直接转矩控制系统中的滑模观测器后加入无限脉冲响应滤波器(IIR filter),以解决在滑模观测器输出中的高频噪声,并进一步采用连续的双曲正切函数代替不连续的符号函数,以改善系统抖振;其次,基于自抗扰控制器(ADRC)设计速度环,用以改善系统超调和转速之间的矛盾;最后,在Mat-lab/Simulink环境下搭建了硬件在环实验平台.仿真和结果表明,在相同负载和干扰条件下,相比传统无速度传感系统,本文所设计的自抗扰永磁同步电机无速传感控制能减小转速估计的抖振,且具有更优的鲁棒性和速度跟踪性能.
Design of speed sensorless control for PMSM based on improved sliding mode observer
To address the challenges of accurately estimating rotor speed and position using the Sliding Mode Ob-server(SMO)due to high-frequency chattering,and the poor robustness and speed tracking performance of the speed loop PI controller,we propose an improved SMO-based speed sensorless control scheme for Permanent Magnet Synchronous Motor(PMSM).First,an Infinite Impulse Response(IIR)filter is incorporated into the SMO within the Direct Torque Control(DTC)system to mitigate the high frequency noise in the SMO output.Then a continuous hyperbolic tangent function is adopted to replace the discontinuous sign function to attenuate the system chattering.Moreover,an Active Disturbance Rejection Control(ADRC)-based speed loop controller is designed to optimize the trade-off between the overshoot and settling time of the system.Finally,a hardware-in-the-loop experimental platform is established in Matlab/Simulink environment.Both simulation and experimental results show that,under identical load and interference conditions,the proposed ADRC-based speed sensorless controller outperforms traditional speed sensorless control systems,effectively suppressing the chattering and exhibiting superior robustness and speed track-ing performance.

permanent magnet synchronous motor(PMSM)sliding mode observer(SMO)infinite impulse re-sponse(IIR)filteractive disturbance rejection controller(ADRC)

柴成龙、李娟、李生权、陈兴

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扬州大学 电气与能源动力工程学院,扬州,225127

永磁同步电机 滑模观测器 无限脉冲响应滤波器 自抗扰控制器

国家自然科学基金新能源电力系统国家重点实验室项目江苏省"六大人才高峰"项目

61903322LAPS19003KTHY2018038

2024

10.13878/j.cnki.jnuist.20231214001

南京信息工程大学学报
南京信息工程大学

南京信息工程大学学报

CSTPCD北大核心
影响因子：0.737
ISSN：1674-7070
年,卷(期)：2024.16(5)