| 基于线性扩张状态观测器的电流谐波抑制 |
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| 引用本文： | 段超,刘亚静,孙章军,任武,李琳,刘乐.基于线性扩张状态观测器的电流谐波抑制[J].微电机,2022,0(2):51-55+75. |
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| 作者姓名： | 段超 刘亚静 孙章军 任武 李琳 刘乐 |
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| 作者单位： | （1.北京航天控制仪器研究所，北京 100039；2.北京交通大学 电气工程学院，北京 100044） |
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| 摘 要： | 永磁同步电机（PMSM）的矢量控制系统中存在着齿槽转矩、逆变器电压死区和传感器检测误差等非理想因素，在电流环中引入了电流谐波，造成电机转矩脉动。本文构造了电流环线性扩张状态观测器（LESO）来抑制电流谐波；分析了LESO和整个电流环的稳定性，给出了电流环参数整定的依据；随后对采用LESO的电流环与采用传统PI控制器的电流环的谐波抑制性能进行了对比分析。最后通过仿真验证了采用LESO的电流环可以较好的抑制电流谐波，进而抑制了电机转矩脉动。
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| 关 键 词： | 电流环 电流谐波 转矩脉动 线性扩张状态观测器 |
PMSM Current Harmonic Suppression Based on Linear Extended State Observer |
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| DUAN Chao,LIU Yajing,SUN Zhangjun,REN Wu,LI Lin,LIU Le.PMSM Current Harmonic Suppression Based on Linear Extended State Observer[J].Micromotors,2022,0(2):51-55+75. |
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| Authors: | DUAN Chao LIU Yajing SUN Zhangjun REN Wu LI Lin LIU Le |
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| Affiliation: | (1. Beijing Institute of Aerospace Control Instrument，Beijing 100039，China ; 2. Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | In the vector control system of permanent magnet synchronous motor (PMSM), existing non ideal factors such as cogging torque, voltage dead time of inverter and sensor detection error etc. The current harmonics is introduced into the current loop, resulting in torque ripple. In this paper, linear extended state observer (LESO) is constructed to suppress current harmonics; the stability of LESO and the whole current loop is analyzed; the basis of current loop parameter setting is given; then the harmonic suppression performance of the current loop with LESO and the current loop with traditional PI controller is compared and analyzed. Finally, the simulation results show that the current loop with LESO can suppress the current harmonics and the torque ripple of the motor. |
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| Keywords: | current loop harmonic current torque ripple linear extended state observer |
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