【摘要】 为了进一步改善变频器的性能 ,完善相控理论 ,减少输出电压波形的谐波成份 ,在余弦交截法的基础上 ,提出了用对称余弦法对触发点进行优化。并应用了功率谱分析法和MATLAB工具 ,分别对输出波形进行了谐波分析 ,最后给出了实验分析波形。更多还原

【Abstract】 To further improve frequency convener’s performance,perfect phase-controlled theory and reduce voltage wave-shape’s harmonic component,based on cosine interpenetration law the paper presents symmetry cosine law to better trigger points.With the analysis method of power spectrum and MATLAB for tool,the paper proceeds great quantity of harmonic analysis of wave-shape and gives testing waves in the end.更多还原