| 基于U-I模型的感应电机定子磁链估计的仿真研究 |
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| 引用本文： | 巫庆辉,邵诚.基于U-I模型的感应电机定子磁链估计的仿真研究[J].系统仿真学报,2007,19(1):89-92,215. |
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| 作者姓名： | 巫庆辉 邵诚 |
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| 作者单位： | 大连理工大学先进控制研究所,辽宁,大连,116024 |
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| 摘 要： | 定子磁场定向的直接转矩控制逐渐被广泛应用于高性能异步电机调速系统。定子磁链估计精度是影响控制系统动态、稳态性能的主要因素。由于定子电阻参数变化及低通滤波器的影响，尤其低速运行时，传统定子磁链估计方法的估计精度及快速性往往很差。提出了一个全新的改进U-I模型定子磁链估计方案，不仅解决了定子电阻整定补偿问题。而且解决了低通滤波器截止频率优化补偿问题．在此基础上，建立直接转矩控制方案的仿真系统，仿真结果表明提出的方案能够使异步电机在低速到高速范围内都能得到令人满意的性能。
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| 关 键 词： | 可编程低通滤波器 定子电阻自整定 参考模型自适应系统 直接转矩控制 磁场定向控制 |
| 文章编号： | 1004-731X（2007）01-0089-04 |
| 收稿时间： | 2005-09-26 |
| 修稿时间： | 2005-09-262006-09-18 |
Simulation of Stator-flux Estimation for Induction Motors Based on U-I Model |
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| WU Qing-hui,SHAO Cheng.Simulation of Stator-flux Estimation for Induction Motors Based on U-I Model[J].Journal of System Simulation,2007,19(1):89-92,215. |
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| Authors: | WU Qing-hui SHAO Cheng |
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| Institution: | Institute of Advanced Control Technology, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The stator flux-oriented direct torque control is widely used in high performance motion control of induction motors.But the precise of stator flux estimation for induction motors is essential which influences the dynamic and steady state performance.Due to the stator resistance parameter's variance and the low pass filter(LPF),the classic estimation of stator flux is not satisfactory,especially in low-speed operation.A novel scheme of the stator flux estimation for U-I model was proposed,by which both compensation issues of stator resistance self-tuning and LPF cut-off frequency optimizing were solved effectively.Using the proposed scheme,a simulation system of the novel direct torque control(DTC)scheme was established.The simulation results demonstrate that the induction motor works satisfactorily for a large region from low-speed to high-speed. |
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| Keywords: | programmable low pass filter stator resistance self-tuning model reference adaptive system direct torque control field-orientation control |
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