改进的交-交变频器脉冲触发控制策略研究  

Research on Modified Pulse Triggering Control Strategy of AC-AC Converter

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：《煤矿机电》2014年第3期34-37,41,共5页Colliery Mechanical & Electrical Technology

摘　　要：根据余弦交点法的基本原理,对传统的离线触发方式进行改造。即采取在线近似求解的方法,用三角波代替参考正弦电压波,用直线代替同步余弦波,将求解三角方程近似化为求解直线方程,可以任意改变输出电压的频率和幅值,实现在线实时变频。利用Matlab/Simulink建立六脉波交-交变频电路仿真模型,得到了较好的输出波形。仿真结果表明,此方法是正确和可行的。According to the basic principle of the cosine wave crossing method, modifies the traditional offline trigger modes. Takes the on-line approximate solving method, the triangular wave is instead of the reference sine voltage wave; the straight line is instead of synchronous cosine wave. The solving trigonometric equation is approximated as the solving linear equation, which can arbitrarily change the frequency and amplitude of the output voltage and realize on-line real-time frequency. The six pulse wave AC-AC frequency circuit simulation model is established using Matlab/Simulink, which gets better output waveforms. The simulation result shows that this method is correct and feasible.

关 键 词：余弦交点法 触发时刻 交-交变频器 

分 类 号：TM921.52[电气工程—电力电子与电力传动]