摘要
变流系统是决定高速动车组动力配置的重要组成部分之一,其散热能力在很大程度上影响着变流系统的容量。论文简要介绍了高速列车牵引传动系统结构及其冷却方式,运用二次线性化的方法对牵引变流器中的主逆变器功率器件损耗进行建模,并推导出了具体的计算流程。另外,利用热仿真软件FloTHERM对功率模块特定工作状态下的热分布情况进行仿真,并与计算结果及列车运行实测数据比对,证明了建模及仿真分析的可靠性,为变流器的损耗计算及散热设计提供了方法和依据。
Converter system is one of the important components to decide the power arrangement of EMU.Its thermal capability affects the power of converter system mostly.The structure of the drive system and cooling method of EMU is introduced.Secondary linearization is used to model the power devices of main inverters in traction converter.Specific calculation flow is also derived.In addition,simulation software FloTHERM is presented to simulate the heat distribution of power unit in particular working state.The simulation result compared with calculation result and actual operation data proves the reliability of modeling and simulation analyzing,which provides the method and basis of converter loss calculation and thermal design.
出处
《电源学报》
2011年第4期68-72,87,共6页
Journal of Power Supply
基金
国家科技支撑计划项目(2009BAG12A01-F15-1)
关键词
高速列车
变流器
损耗计算
温升仿真
热设计
high speed EMU
converter
heat dissipation calculation
temperature increase simulation
thermal design
