矿井提升机变频调速控制策略的研究  

Research on Control Strategy of Variable Frequency Speed Regulation System of Mine Hoist

作　　者：陈鑫[1] 杜庆楠[1] 乔美英[1] 鲁西坤 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《计算机仿真》2015年第8期245-249,共5页Computer Simulation

基　　金：2013年度河南省科技攻关项目(132102210126)

摘　　要：研究矿井提升机交交变频器驱动变频调速优化控制问题,矿井提升机交交变频调速系统通常采用余弦交截法求解晶闸管的脉冲触发时刻来控制变频器输出频率的变化,实现矿井提升机的变频调速,对系统进行优化控制,可以改善和提高系统的性能。但传统余弦交截法的难点在于无法在线实时计算变频器输出频率的触发时刻,也就无法任意连续的调节和改变变频器输出频率,使得系统的调速性能和实时性都比较差。为解决上述问题,提出了一种改进的余弦交截法算法,采用相对坐标系来求取触发时刻,能够实时控制变频器输出电压的频率和幅值,实现在线连续变频的控制效果。搭建了MATLAB/Simulink仿真平台和ARM的变频调速实验平台,仿真和实验结果为矿井提升机优化控制提供了科学依据。The AC - AC variable frequency speed regulation system of mine hoist utilizes the cosine wave - cross- ing method to solve the trigger time of the thyristor in order to control the output frequency of the eycloconverter, thereby realizig variable frequency speed control of mine hoist, it can improve and enhance the performance of the system by means of optimizing control the system. The traditional cosine wave - crossing is unable to calculate the trigger time of the cycloconverter＇s output frequency online and yet cannot arbitrarily continuously regulate and change the output frequency of the cycloconverter, the speed performance and the real - time performance of the system is not satisfied. This artcle puts forward a modified wave - crossing to figure out the trigger time by using the relative coordi- nate system, this method can real - time control the output voltage amplitude and frequency of the cycloconverter, and realize the control effect of online continuous frequency conversion. Finally, the simulation platform of MAT- LAB/Simulink and the experimental platform of the variable frequency speed regulation system are built based on the ARM. The simulation and experiment results verify the effectiveness and correctness of the proposed algorithm.

关 键 词：余弦交截法 相对坐标系 触发时刻 连续 

分 类 号：TM46[电气工程—电器]