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