三相PWM整流器启动冲击电流的抑制方法  

Suppression Method for Start-up Inrush Current of Three-phase PWM Rectifier

作　　者：郭成涛 白云飞 王钊 姚川恒 GUO Chengtao;BAI Yunfei;WANG Zhao;YAO Chuanheng(State Grid Shijiazhuang Power Supply Company,Shijiazhuang 050000,China;Hebei Tuopu Electric Co.,Ltd,Shijiazhuang 050000,China;Beijing Institute of Mechanical Equipment,Beijing 100089,China)

机构地区：[1]国网石家庄供电公司,石家庄050000 [2]河北拓普电气有限公司,石家庄050000 [3]北京机械设备研究所,北京100089

出　　处：《电力系统及其自动化学报》2021年第8期146-150,共5页Proceedings of the CSU-EPSA

基　　金：国家电网有限公司总部科技资助项目(B304SJ200019)。

摘　　要：针对三相PWM整流器在启动时刻三相电网侧电流存在冲击,会造成功率器件的烧毁问题,提出了一种启动冲击电流的抑制方法。通过动态地调整参考直流母线电压的斜率,可以有效控制网侧电流冲击峰值,并且直流母线侧的电压也实现了稳定上升到参考指令值。最后搭建了实验样机系统,进行了不同参考电压模式下的对比实验验证,实验结果验证了理论分析的正确性和所提方法的有效性。To avoid the destruction of power devices caused by the three-phase grid-side inrush current during the startup procedure of a three-phase PWM rectifier,a suppression method for the start-up inrush current is proposed in this paper,which can effectively control the grid-side peak inrush current by adjusting the slope of DC bus reference voltage dynamically.In addition,the voltage in the DC bus steadily rises up to its reference value.Finally,a system of experi⁃mental prototype was built,and the results of a comparative experiment under different reference voltages validated the correctness of theoretical analysis and effectiveness of the proposed method.

关 键 词：PWM整流器 电压矢量定向控制 网侧冲击电流 直流电压给定 有功电流 

分 类 号：TM46[电气工程—电器]