| 优化反馈补偿闭环定子磁链观测器 |
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| 引用本文： | 王淑玉,罗振鹏,张思清,韩越,王小龙.优化反馈补偿闭环定子磁链观测器[J].微电机,2022,0(8):80-84. |
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| 作者姓名： | 王淑玉 罗振鹏 张思清 韩越 王小龙 |
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| 作者单位： | （内蒙古自治区机电控制重点实验室（内蒙古工业大学），内蒙古自治区 呼和浩特 010080） |
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| 摘 要： | 针对纯积分定子磁链观测器存在的直流偏置与积分漂移问题，对反馈闭环磁链观测器进行了优化，设计了一种改进的反馈补偿闭环磁链观测器。该观测器先利用磁链与反电动势两矢量的正交关系，控制二者的夹角余弦值为零，再通过简单的乘法运算，实现对磁链的动态补偿，从而得到正确的积分结果。理论分析显示，积分结果中的直流分量能够得到完全消除，同时仿真结果证明了，改进观测器的良好性能以及理论分析的正确性。
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| 关 键 词： | 磁链观测 定子磁链观测器 异步电机 直接转矩控制 |
Optimal feedback compensation closed-loop stator flux observer |
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| WANG Shuyu,LUO Zhenpeng,ZHANG Siqing,HAN Yue,WANG Xiaolong.Optimal feedback compensation closed-loop stator flux observer[J].Micromotors,2022,0(8):80-84. |
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| Authors: | WANG Shuyu LUO Zhenpeng ZHANG Siqing HAN Yue WANG Xiaolong |
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| Affiliation: | (Inner Mongolia Key Laboratory of Electromechanical Control(Inner Mongolia University of Technology)，Hohhot 010080，Inner Mongolia，China) |
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| Abstract: | Aiming at the DC bias and integral drift of pure integral stator flux observer, the feedback closed-loop flux observer is optimized and an improved flux observer is designed based on feedback compensation closed loop flux observer. Firstly, the orthogonal relationship between the flux linkage and the back electromotive force (EMF) is used to control the cosine of the angle between them to zero. Then through simple multiplication operation, the dynamic compensation of flux linkage is realized, and the correct integration result is obtained. Theoretical analysis shows that the DC component in the integration result can be completely eliminated. At the same time, the simulation results prove the good performance of the improved observer and the correctness of the theoretical analysis. Theoretical analysis shows that, the DC component in the integration result can be completely eliminated. The simulation results verify the good performance of the improved observer and the correctness of the theoretical analysis. |
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| Keywords: | flux observer stator flux observer asynchronous motor direct torque control |
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