摘要
目的:辅助供电系统是城市轨道交通车辆的重要子系统之一。传统的辅助供电系统为三相交流系统,辅助变流器通常为三相逆变电源,为空调、空气压缩机、冷却风机等负载供电。近年来电力电子技术和信息技术的发展,电源和负载的性质都在发生变化,尤其是直流负载比例逐渐升高,直流供电的技术和经济优势正逐渐凸显。方法:为顺应直流供电的趋势,从轨道车辆辅助供电系统的基本需求出发,对比传统的交流辅助供电系统,讨论了直流辅助供电系统在节能方面的优越性。提出了一种直流辅助供电系统方案,并讨论该技术路线未来发展中的若干关键问题。结果及结论:设计了一种大功率直流变换器作为直流辅助供电系统的核心装置,搭建地面试验平台进行试验,验证了该大功率直流变换器的可行性。
Objective:The auxiliary power supply system is a crucial subsystem of urban rail transit vehicles.Conventional auxiliary power supply system employs three-phase AC(alternating current)system,with three-phase inverter typically as the auxiliary inverter,providing power through air-conditioning,air-compressor,cooling fans.With the recent advancements in power electronics and information technology,both power and loads undergo significant changes.Particularly,as the proportion of DC loads gradually increases,the technical and economic advantages of DC power supply are gradually emerging.Method:Starting from the basic requirements of the rail vehicle auxiliary power supply system,compared with the conventional AC auxiliary power supply system,the superiority of the DC auxiliary power supply system in energy saving is discussed.A DC auxiliary power supply system scheme is proposed and several key issues in the future development of this technology are explored.Results and Conclusion:A high-power DC converter is designed as the core device for the DC auxiliary power supply system.A ground test platform is established to experimentally validate the feasibility of this high-power DC converter.
作者
马颖涛
MA Yingtao(Locootive and Car Research Institute,China Academy of Railway Sciences Co.,Ltd.,100081,Beijing,China)
出处
《城市轨道交通研究》
北大核心
2023年第12期227-232,共6页
Urban Mass Transit
基金
中国国家铁路集团有限公司科技研究开发计划重点课题(L2021J001)。
