带双负载运行的VIENNA整流器中点电压平衡控制  

Neutral-point Voltage Balancing Control of a Double-Load VIENNA Rectifier

作　　者：武汉林 朱强 Wu Hanlin;Zhu Qiang(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Electric Tool Research Institute (Group) Co.,Ltd.,Shanghai 200031,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海市200093 [2]上海电动工具研究所(集团)有限公司,上海市200031

出　　处：《农业装备与车辆工程》2019年第4期55-58,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：针对VIENNA整流器结构固有的中点电压波动问题,可以通过双负载结构中调整负载的大小来观察。文章分析了三相VIENNA整流器的工作原理,采用一种电压电流双环结构,空间矢量调制(SVPWM)方式控制运行。针对三电平结构固有中点电压波动问题,通过调节正负小矢量的作用时间,能够达到双负载在大小不同的情况下,直流电压稳定,中点电压平衡的效果,最后使用MATLAB/Simulink仿真证明了此方案的可行性。Neutral-point voltage fluctuation is a problem of VIENNA rectifier structure,which can be observed by adjusting the size of the load in the double-load structure.In this paper,the principle of three-phase VIENNA rectifier is analyzed,a voltage and current doubleloop structure and Space Vector Pulse Width Modulation(SVPWM)are used to control the operation.In views of neutral-point voltage fluctuation of three-level structure,stable DC voltage and balanced neutral-point voltage can be achieved by adjusting the time of positive and negative small vectors.Finally,the method proposed in this paper is verified in MATLAB/Simulink.

关 键 词：VIENNA整流器 中点电压平衡 双负载 空间矢量调制 

分 类 号：TM46[电气工程—电器]