一种改进的电压型转子磁链估计模型

为了实现高性能异步电机矢量控制，必需解决转子磁链的准确估计，本文介绍一种改进电压型转子磁链估计模型，它是针对传统的电压型磁链估计模型在低速时磁链估计不准确而提出的．文中详细介绍了这种改进的磁链估计模型的原理与框图。通过仿真结果与控制系统实验结果表明，这种改进电压型转子磁链估计模型能够准确辨识转子磁链，而且低速时动态性能良好。

An Improved Rotor Flux Estimation Model Based on Stator Voltages and Currents

In order to achieve a high performance of vector control for induction motor,the rotor flux must be estimated accurately.An improved rotor flux estimation model based on the stator voltages and currents is introduced in this paper.The estimation model is presented because the calculated rotor flux deteriorates in the low speed range using the conventional estimation model.The principle and configuration of the improved rotor flux estimation model are introduced in detail.The simulation results and the experiment results of the system show that the rotor flux can be estimated accurately by the improved estimation model and it has good dynamic performance in the low speed range.