牵引功率单元布局对支撑电容的影响研究  

Research on Influence of Pull Power Module Layout on Support Capacitor

作　　者：张丹 陈彦肖 陈宏 苑伟华 ZHANG Dan;CHEN Yan-xiao;CHEN Hong;YUAN Wei-hua(CRRC Yongji Motor Co.,Ltd.,Xi'an 710018,China)

机构地区：[1]中车永济电机有限公司,陕西西安710018

出　　处：《电力电子技术》2021年第11期46-49,共4页Power Electronics

摘　　要：功率单元和支撑电容是牵引变流器设计中最核心的两个部件,功率单元结构布局的不同影响支撑电容的纹波电流,进而影响变流器的可靠性和使用寿命。此处研究了功率单元不同结构布局和应用特点,并对其对支撑电容纹波电流的影响进行理论分析,最后通过仿真和样机试验验证,提出最优功率单元结构布局,为功率单元结构选择和电容选型提供了设计依据。Power module and support capacitor are the two core components in pull converter design.Different power module structure layout affects the ripple current of support capacitor,and then affects the reliability and service life of converter.The different structure layout and application characteristics of power module are studied,and its influence on ripple current of support capacitor is analyzed theoretically,and the optimal structure layout of power module is proposed through simulation and prototype test,which provides design basis for structure selection of power module and capacitor selection.

关 键 词：变流器 功率单元 支撑电容 纹波电流 

分 类 号：TM46[电气工程—电器]