摘要
在感应电动机间接转子磁场定向方案中,基于电流模型的控制系统有较好的动静态特性,但电流模型却对电动机的转子时间常数非常依赖。为实现感应电动机的最优控制,给出了感应电动机转子时间常数的离线测量方法。对基于递推最小二乘(Recursive Least-Squares,RLS)算法的转子时间常数离线测量方法给出了详细分析。通过感应电动机的静态特性,简化了感应电动机数学模型,继而推导出最小二乘算法的线性模型。经过大量的MATLAB仿真分析,表明递推最小二乘法直接离线测量得到的结果相比于传统间接离线测量的结果更加准确。最后,对影响测量结果的主要因素给出了误差分析。
In the indirect rotor flux orientation scheme of induction motor, the control system based on current model has better dynamic and static characteristics, but the current model is very dependent on the rotor time constant. In order to realize the optimal control of induction motor, the off-line measurement method of rotor time constant of induction motor is presented. The off-line measurement method of rotor time constant based on recursive least squares(RLS) algorithm is analyzed in detail. Through the static characteristics of induction motor, the mathematical model of induction motor is simplified, and then the linear model of least square algorithm is derived. Through a large number of MATLAB simulation analysis, it shows that the results obtained by the recursive least squares method are more accurate than the traditional indirect off-line measurement results. Finally, the error analysis of the main factors affecting the measurement results is given.
作者
蔡美东
赵云
廖政斌
王晓光
CAI Meidong;ZHAO Yun;LIAO Zhengbin;WANG Xiaoguang(Hubei Key Laboratory of Solar Energy Efficient Utilization and Storage Operation Control,Hubei University of Technology,Wuhan 430068,China)
出处
《电气应用》
2021年第1期28-34,共7页
Electrotechnical Application
基金
湖北省自然科学基金(2019CFB759)。
关键词
感应电动机
转子时间常数
离线测量
最小二乘法
误差分析
induction motor
rotor time constant
off-line measurement
least square method
error analysis
