| 基于全阶模型的异步电机磁链观测收敛性分析与对策 |
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| 引用本文： | 邓歆,张广明,王德明,梅磊,欧阳慧珉. 基于全阶模型的异步电机磁链观测收敛性分析与对策[J]. 护理与康复, 2015, 0(1): 61-71 |
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| 作者姓名： | 邓歆 张广明 王德明 梅磊 欧阳慧珉 |
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| 作者单位： | 南京工业大学自动化与电气工程学院 南京 211816,南京工业大学自动化与电气工程学院 南京 211816,南京工业大学自动化与电气工程学院 南京 211816,南京工业大学自动化与电气工程学院 南京 211816,南京工业大学自动化与电气工程学院 南京 211816 |
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| 摘 要： | 高性能交流驱动系统中,电机磁链位置能否准确获取将影响系统的动态与稳态性能。异步电机全阶模型同时实现了电机转速作为参数的在线辨识以及电机电流与磁链作为状态变量的实时观测。本文将对全阶模型在估计异步电机参数与变量过程中的磁链收敛特性进行研究。由于全阶模型的非线性特性,采用奇异摄动理论,将全阶模型分解为转速辨识模型与磁链观测模型,两个模型在时间尺度上分离,通过分析磁链观测子系统中系统特征值的分布与阻尼特性,研究了磁链观测的收敛性与影响收敛速度的影响因子。研究结果表明磁链系统在中高速的阻尼特性需要改善,并提出了改善收敛性的对策。仿真和实验验证了分析方法的正确性与所提对策的可行性。
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| 关 键 词： | 全阶模型 异步电机 转速辨识 磁链观测 收敛性 |
| 收稿时间： | 2013-07-04 |
| 修稿时间： | 2014-02-10 |
Convergence Analysis and Corresponding Strategy of Full Model based Induction Motor Flux Observation |
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| Deng Xin,Zhang Guangming,Wang Deming,Mei Lei and Ouyang Huiming. Convergence Analysis and Corresponding Strategy of Full Model based Induction Motor Flux Observation[J]. Nursing and Rehabilitation Journal, 2015, 0(1): 61-71 |
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| Authors: | Deng Xin Zhang Guangming Wang Deming Mei Lei Ouyang Huiming |
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| Affiliation: | Nanjing University of Technology Nanjing 211816 China,Nanjing University of Technology Nanjing 211816 China,Nanjing University of Technology Nanjing 211816 China,Nanjing University of Technology Nanjing 211816 China and Nanjing University of Technology Nanjing 211816 China |
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| Abstract: | In high performance AC system, whether the flux position can be obtained correctly or not will influence the dynamic and steady state performance. Induction motor full model realizes motor speed on-line identification as the parameter, besides motor current and flux real-time observation as state variables simultaneously. Research is done on the convergence characteristics of flux observation in the process of estimating motor parameters and variables. Due to the nonlinearities of full model, singularity theory is adopted, dividing full model into speed identification model and flux observation model, with the two models separated on time scale. By analyzing the eigenvalue distribution and damp ratio of flux observation subsystem, convergence and influence factors are studied. Research results show that the damp ratio in the middle and high speed range needs to be improved and the corresponding strategy of improving convergence is proposed. Simulation and experiments verify the validity of analysis method and the feasibility of proposed strategy. |
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| Keywords: | Full model induction motor speed identification flux observation convergence |
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