变频调速系统控制方法的研究

针对传统变频调速控制系统的不足,本文在交―交变频调速系统的基础上,引入了一种新的控制方法———对称余弦控制法。这种控制方法不但兼顾了传统控制方法所固有的正弦性,同时又由于它自身控制方式的特点,能很好地解决波形的对称性问题,同时兼顾输出波形的对称度与正弦度。通过仿真实验,该控制方式能很好地兼顾对称度和正弦度,输出的谐波含量也较小,取得了良好的效果。

Study on Control Method of Variable Frequency Speed Regulation System

Aiming at the shortage of traditional control variable frequency speed control system,based on the AC frequency conversion system,introduces a new control method——symmetric cosine control method,the control not only pays attention to the traditional control method the inherent sine,and at the same time as a result of its own control characteristics,and can be a good solution waveform symmetry.Taking into account the output waveform symmetry and degree of sine.The simulation experiment,the control way is both symmetry and sine output harmonic content,lesser also achieved good results.