六脉波交交变频器高频段连续变频调速研究  

Research on continuous frequency conversion speed regulation of high frequency section of six pulse AC-AC frequency converter

作　　者：孟耀凯 孔丙亚 崔占奇 冯高明[1] MENG Yaokai;KONG Bingya;CUI Zhanqi;FENG Gaoming(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo454000,Henan,China;No.13 Mine of Pingmei Co.,Ltd.,Xiangcheng,452670,Henan,China;Haima New Energy Co.,Ltd.,Zhengzhou450016,Henan,China)

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 [2]平煤股份十三矿,河南襄城452670 [3]海马新能源有限公司,河南郑州450016

出　　处：《河南理工大学学报（自然科学版）》2021年第5期124-131,共8页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省自然科学基金资助项目(162300410117);河南理工大学创新团队项目(T2015-2)。

摘　　要：六脉波双变量交交变频器在高频段(25 Hz以上)输出的波形对称度差,谐波含量多,在调速过程中极易导致电动机转速和转矩的震荡。针对这一问题,在双变量余弦交截法的基础上,对高频段波形进行对称性改造,使变频器在高频段输出的波形得到优化,并对高频段频率间的切换方式进行研究,使各频段间的切换更加平滑,以提升六脉波双变量交交变频器变频调速的范围和调速性能。最后通过仿真和实验,验证了六脉波双变量交交变频器高频段连续变频调速方式的可行性。The six-pulse double-variable AC-AC frequency converter has poor symmetry and high harmonic content in the high frequency range(above 25 Hz),which easily leads to the vibration of motor speed and torque in the process of speed regulation.In order to solve this problem,based on the bivariate cosine intercept method,the high frequency waveform symmetry was promoted and output waveform of the inverter in high frequency band could be optimized.At the same time,switching between the frequency in high frequency band was also researched,which made switching between the spectrum smoother,so as to enhance the range of frequency conversion speed regulation and speed control performance of the six-pulse double-variable converter.Finally,through simulation and experiment,the feasibility of continuous frequency conversion speed regulation mode in high frequency band of six-pulse double-variable AC-AC converter was verified.

关 键 词：交交变频 高频段 波形优化 变频调速 

分 类 号：TM343[电气工程—电机]