复合模型参考自适应无速度矢量控制

Composite Model Reference Adaptive Speed Sensorless Vector Control

磁链模型和无功功率模型由于结构简单、估计性能好,常用于模型参考自适应转速估计。针对磁链模型和无功功率模型各自存在的动稳态问题,通过分析不同模型对磁链精度的需求差异,提出了由无功功率-磁链-切换函数组成的复合模型,该复合模型在动态和稳态过程中都能实现准确的速度估计。经Matlab/Simulink仿真及实物实验,证实复合模型具有良好的动态跟踪性能和优秀的稳态性能。

Flux linkage model and reactive power model are often used for model reference adaptive speed estimation because of their simple structure and good estimation performance.In view of the dynamic and steady state problems of flux linkage model and reactive power model,a composite model consisting of reactive power,flux linkage and switch function was proposed by analyzing the difference of flux accuracy of different models,which could achieve accurate velocity estimation in both dynamic and steady state processes.Through Matlab/Simulink simulation and real experiments,it was proved that the composite model had good dynamic tracking performance and excellent steady-state performance.