异步电机混合型滑模磁链观测器分析与验证

中国机械工程 ›› 2015, Vol. 26 ›› Issue (19): 2646-2651.

异步电机混合型滑模磁链观测器分析与验证

李孟秋;周志康;廖武;彭婧

湖南大学国家电能变换与控制工程技术研究中心，长沙,410082

出版日期:2015-10-10 发布日期:2015-10-10
基金资助:
国家国际合作专项（2011DFA62240);国家自然科学基金资助项目（51377050）

Analysis and Verification of Hybrid Sliding Mode Flux Observer of Induction Motors

Li Mengqiu;Zhou Zhikang;Liao Wu;Peng Jing

National Engineering Research Center of Energy Conversion and Control，Hunan University，Changsha，410082

Online:2015-10-10 Published:2015-10-10
Supported by:
International S&T Cooperation Program of China( No. 2011DFA62240);National Natural Science Foundation of China（No. 51377050）

摘要/Abstract

摘要：

在异步电机直接转矩控制中，磁链的观测是精确控制电机的一个重要环节。针对两类无速度传感器滑模观测器，从收敛性和参数敏感性两方面进行了深入的分析，并比较各自的优缺点。结合工程实际需要提出了一种混合型滑模磁链观测器算法。所提出的磁链观测器在控制中能消除初始磁链误差，又具有较好的鲁棒性。MATLAB仿真和实验结果论证了该方法的正确性和有效性。

关键词: 直接转矩控制, 异步电机, 滑模磁链观测器, 无传感器

Abstract:

In DTC of induction motors, flux linkage observation is an important part of precise control of motor. The analyses from two aspects of convergence and parameter sensitivity were carried out herein in view of two kinds of speed sensorless sliding mode observer. The advantages and disadvantages of two kinds of speed sensorless sliding mode observer were compared. A hybrid flux observer algorithm combined with the actual needs of engineering was proposed. The initial flux errors might be eliminated in the control of the new hybrid flux observer with good robustness. The correctness and effectiveness of the proposed method were verified by simulations and experiments.

Key words: direct torque control (DTC), induction motor, sliding mode flux observer, sensorless

中图分类号:

李孟秋, 周志康, 廖武, 彭婧. 异步电机混合型滑模磁链观测器分析与验证[J]. 中国机械工程, 2015, 26(19): 2646-2651.

Li Mengqiu, Zhou Zhikang, Liao Wu, Peng Jing. Analysis and Verification of Hybrid Sliding Mode Flux Observer of Induction Motors[J]. China Mechanical Engineering, 2015, 26(19): 2646-2651.

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