摘要
无刷直流电机具有高效率和低噪声优点,在高速开关(high speed switch,HSS)的驱动方面具有良好的应用前景,但是电机转矩脉动会影响高速开关的稳态和动态调控性能。为此,研究了一种基于优化滑模观测器-自适应陷波器-直接转矩控制(SMO-ANF-DTC)的转矩脉动抑制方法。通过构建外环速度环和内环电流环的双闭环控制提升系统的精确度和抗干扰能力;在直接转矩控制基础上加入优化滑模观测器和自适应滤波器,进行电机驱动的谐波抑制。该控制方法在进行转矩脉动抑制的同时,提升了电机控制的精度和稳定性。通过仿真对比了传统控制策略与提出控制策略的相电流波形和转矩波形,在使用SMO-ANF-DTC控制方法后,相电流输出波形与转矩波形顶部的波动明显减少。结果表明所提出的控制策略能够提升电机的性能。
Brushless DC motor has many advantages,such as high efficiency and low noise.Therefore,it was used as the driven motor for high speed switch(HSS)widely.However,the torque ripples will affect the regulation performance of the HSS in stead-state and dynamic-state.Therefore,a torque ripple suppression method based on optimal sliding mode observer utilizing adaptive notch filter for direct torque control(SMO-ANF-DTC)is studied in this paper.The accuracy and anti-interference ability of the system are improved by constructing the double closed-loop control of the outer speed loop and the inner current loop;On the basis of direct torque control,the optimal sliding mode observer and adaptive filter are added to suppress the harmonic of motor drive.The phase current waveform and torque waveform of the traditional control strategy and the control strategy proposed in this paper are compared through simulation.After using the SMO-ANF-DTC control method,the fluctuation of the phase current output waveform and the top of the torque waveform is significantly reduced.Finally,the simulation results show that the proposed control strategy can improve the performance of the motor.
作者
朱博
郭沫
徐攀腾
宋述波
焦石
郑星星
ZHU Bo;GUO Mo;XU Pan-teng;SONG Shu-bo;JIAO Shi;ZHENG Xing-xing(Guangzhou Bureau of UHV Transmission Company,China Southern Power Grid Co.,Ltd.,Guangzhou 510405,China;School of Electrical Engineering,Northeast Electric Power University,Jilin 132000,China)
出处
《组合机床与自动化加工技术》
北大核心
2023年第1期114-118,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金(U2066208)。
关键词
无刷直流电机
转矩脉动
滑模观测器
自适陷波器
谐波抑制
brushless DC motor
torque ripple
sliding mode observer
adaptive notch filter
harmonic suppression
