一种降低高次谐波的变载波频率调制方法  

A Reduction of High Harmonic Variable Carrier Frequency Modulation Method

作　　者：陆庆[1] 刘红 郑崇伟[1] 李赟 

机构地区：[1]温州大学,浙江温州325035 [2]浙江埃菲生能源科技有限公司,浙江温州325000

出　　处：《电力电子技术》2015年第3期88-89,共2页Power Electronics

基　　金：国家自然科学基金(51207112);浙江省科技计划项目(2014C31093)~~

摘　　要：此处提出了一种变载波频率调制方法,即当正弦电压幅值较高时采用较低的载波频率,而当正弦电压幅值较低时采用较高的载波频率。该方法与固定载波频率调制相比,在保持总开关次数不增加的条件下,减少输出电压的高次谐波含量。阐述了该调制算法下调制电压高次谐波分布与载波频率之间的关系。通过仿真分析及样机实验验证了该方法对降低调制输出电压的高次谐波具有良好的效果。The variable cartier frequency modulation is proposed, which means the high amplitude of sine voltage with low carrier frequency, and the low amplitude of sine voltage with high carrier frequency.Compared with the fixed carr- ier frequency modulation, the method can keep main switch times and reduce the high harmonic content.The relation- ship between carrier frequency and high harmonic distribution of modulation voltage is emphasised.The simulation analysis and the prototype experiment show that this method has a good effect on reducing the high harmonic.

关 键 词：调制 变载波频率 高次谐波 

分 类 号：TN76[电子电信—电路与系统]