摘要
为了优化大功率开关电源的散热系统,采用有限元软件分析高频窄脉冲工况下IGBT瞬时温度波动情况,利用散热系统模型,对热场分布及边界条件做数值分析;在ANSYS环境下,建立了IGBT三维有限元模型,对其瞬态热场的分布与变化规律、影响散热效率的因素进行了仿真分析,并对冷却水流速、散热器几何尺寸、IGBT布局做了优化设计,得到效率最优的散热系统设计方案,并应用于自主研发的150kW金属表面处理脉冲电源设备中,为系统优化提供了依据。
In order to optimize the cooling system of the power switching power supply,the paper analyzed the IGBT transient temperature fluctuations of high frequency narrow pulse condition.Numerical analyses of the thermal field distribution and boundary conditions were conducted using the finite element model of the cooling system.A three-dimensional finite element model of IGBT in ANSYS environment was created.Also,some simulation analyses of transient thermal field distribution and changes,and factors that affect the cooling efficiency were performed.Cooling water flow rate,radiator geometry and IGBT layout were optimized,which led to an optimal efficiency design of the cooling system.The program was applied to the 150kW metal surface treatment pulse power equipment which had been developed from independent research,and good results were obtained.
出处
《计算机仿真》
CSCD
北大核心
2013年第8期113-115,134,共4页
Computer Simulation
基金
西安市科技局工业应用技术研发项目(CXY09014-①)
