下垂控制策略在变流控制中的应用分析  

Application of Droop Control Strategy in Power Electronic Control

作　　者：崔晓光 李泽元 咸粤飞 CUI Xiaoguang;LI Zeyuan;XIAN Yuefei(CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266031,China)

机构地区：[1]中车青岛四方车辆研究所有限公司,山东青岛266031

出　　处：《铁道车辆》2024年第5期109-112,共4页Rolling Stock

摘　　要：在多种同类型设备协同工作的系统中,下垂控制策略应用广泛,它是保证系统工作稳定、功率分配均衡的重要方法。轨道交通车辆车载设备多样、负载分散,并联方式可有效提升其供电系统的冗余性和可靠性。文章介绍了CRH3型动车组辅助变流器并联供电系统、CRH2型动车组辅助整流器并联供电系统的整车并联结构和并联运行原理,根据辅助变流器和辅助整流器的输出结构,计算分析输出电流的组成、影响因素,并阐述了下垂控制策略在CRH3型动车组辅助变流器和CRH2型动车组辅助整流器并联供电系统的并联控制中的应用形式。通过对下垂控制策略在轨道车辆不同车型,交直流不同电压制式,软硬件不同控制方式下应用的说明和分析,深入浅出地总结了下垂控制策略的基本原理、适用场合和应用意义。In systems where multiple devices of the same type work together,droop control strategy is widely used as an important method to ensure system stability and power distribution balance.The onboard equipment of railway vehicles is diverse and the load is dispersed.Parallel connection can effectively improve the redundancy and reliability of their power supply system.This article introduces the whole vehicle parallel structure and parallel operation principle of the CRH3 EMU auxiliary inverter and CRH2 EMU auxiliary rectifier parallel power supply system.Based on the output structure of the auxiliary inverter and auxiliary rectifier,the composition and influencing factors of the output current are calculated and analyzed,and the application of the droop control strategy in the parallel control of the CRH3 EMU auxiliary inverter and CRH2 EMU auxiliary rectifier parallel power supply system is explained.By explaining and analyzing the application of the droop control strategy in different types of rail vehicles,AC/DC voltage systems,and different control methods of software and hardware,the basic principles,applicable scenarios,and application significance of the droop control strategy are summarized.

关 键 词：下垂控制策略 辅助变流器 辅助整流器 并联供电系统 功率均衡 

分 类 号：TM921[电气工程—电力电子与电力传动]