一种新型三相电压型PWM整流器启动冲击电流抑制方法  

A Novel Start-up Impulse Current Suppression Method for Three-phase Voltage Source PWM Rectifier

作　　者：王朝强 曹太强 郭筱瑛 韩鹤光 WANG Chao-qiang;CAO Tai-qiang;GUO Xiao-ying;HAN He-guang(School of Electrical Engineering and Electronic Information,Xihua University,Chengdu 610039,China;School of Intelligent Manufacturing,Panzhihua University,Panzhihua 617000,China;Sichuan Aviation Electrical Micro Energy Co.,Ltd,Chengdu 610052,China)

机构地区：[1]西华大学电气与电子信息学院,四川成都610039 [2]攀枝花学院智能制造学院,四川攀枝花617000 [3]四川航电微能源有限公司,四川成都610052

出　　处：《控制工程》2023年第5期927-935,共9页Control Engineering of China

基　　金：四川省高校重点实验开放课题资助项目(szjj2017-015);成都市科技局技术创新研发项目(2019-YFYF-00079-SN);西华大学研究生创新基金资助项目(ycjj2020054)。

摘　　要：针对三相电压型PWM整流器启动瞬间产生较大的冲击电流,致使系统稳定性、可靠性降低的问题,在整流器前端加入预充电电路,对预充电电路软启动过程和整流器启动过流的原因进行了详细分析,再对2种无预充电电路的母线电压缓给定方法和2种预充电电路结合母线电压缓给定方法抑制启动冲击电流的作用机理进行了对比分析,最终提出了预充电-分段二阶抛物线母线电压缓给定混合控制的最优抑制方法,最后通过搭建4种母线电压缓给定方法的仿真模型和30 kW整流器实验样机进行了验证。结果表明,采用预充电-分段二阶抛物线母线电压缓给定混合控制启动的整流器有效地抑制了冲击电流,网侧电流启动无过冲现象,直流侧母线电压无超调。Aiming at the problem that the three-phase voltage source PWM rectifier generates large inrush current at the start of the system,which reduces the stability and reliability of the system,a pre-charge circuit is added to the front end of the rectifier,and make detailed analysis the soft-start process of the pre-charge circuit and the reasons for the overcurrent at the start of the rectifier.Then,it comparative analysis the two methods for slow setting of bus voltage without pre-charging circuit and the two pre-charging circuit combined with the bus voltage slow setting method to suppress the starting inrush current,and then an optimal suppression method of pre-charge-segmented second-order parabolic bus voltage slow setting hybrid control is proposed.Finally,it was verified by building simulation models of four bus voltage slow setting methods and a 30kW rectifier experimental prototype.The results show that the rectifier with pre-charge-segmented second-order parabolic bus voltage slow setting hybrid control start can effectively suppress the inrush current,the grid-side current has start-up no overshoot,and the DC-side bus voltage has no overshoot.

关 键 词：三相电压型PWM整流器 启动冲击电流 预充电 缓给定 

分 类 号：TM461[电气工程—电器]