感应电机带定子电阻自校正的MRAS转速估算研究  

Research of Induction Motor Speed Estimation Based on MRAS and Stator Resistance Self-correction

作　　者：竺伟[1] 王永红[1] 陈伯时[2] 

机构地区：[1]上海广电电气(集团)股份有限公司,上海201401 [2]上海大学,上海200072

出　　处：《电气传动》2014年第12期8-11,共4页Electric Drive

摘　　要：感应电机无速度传感器控制系统的关键是对电机转速准确的估算,分析了经典的基于模型参考自适应系统(MRAS)估算电机转速的原理和缺陷,并分析了定子电阻的变化对转速估算的影响。在此基础上,设计了一种性能更优的带定子电阻自校正的MRAS转速估算方法,避免了经典方法中纯积分和定子电阻变化的影响。通过仿真和试验对此转速估算方法进行了验证,实验结果表明了该方法的合理性和有效性。Motor speed estimation is important for induction motor speed sensor-less control system. The principle and disadvantages of the original MRAS system and the speed estimation impact of the change of stator resistance were analyzed. Based on them, a better MRAS system with stator resistance self-correction was proposed, which can avoid the disadvantages of pure integrator and change of the stator resistance. Simulation and test resuhs show that this method is feasible.

关 键 词：无速度传感器控制 转速估算 模型参考自适应系统 定子电阻自校正 

分 类 号：TM343[电气工程—电机]