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牵引变流器功率器件处于密闭空间内,其电容器、母排及电缆等部件的发热量需通过内循环系统进行消散。文章以某车辆牵引变流器为研究对象,通过建立该变流器内循环系统的三维仿真模型,采用标准k-ε湍流模型,对内循环散热系统进行结构布局和风量优化,得到了其内循环散热系统最优结构布局和冷却风机风量,并通过变流器温升试验验证了其内循环散热系统的可用性和可靠性。
Traction converter power devices in a confined space, the capacitors, busbars and cables and other components of the calorific value to be dissipated through the internal circulation system. In this paper, a traction converter for a vehicle is taken as the research object. Through the establishment of a three-dimensional simulation model of the internal circulation system of the converter and the use of a standard k-ε turbulence model, the structural layout and air volume optimization of the internal circulation cooling system are obtained. The optimal structure of the circulating cooling system and the cooling fan air volume, and through the converter temperature rise test to verify the availability and reliability of its internal circulation cooling system.