自然风冷条件下的小功率IGBT建模与仿真  

Modeling and Simulation of Low-power IGBT Under the Condition of Natural Air Cooling

作　　者：杨湘木[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150000

出　　处：《肇庆学院学报》2013年第2期33-36,共4页Journal of Zhaoqing University

摘　　要：采用一种计算IGBT损耗的方法,通过测量IGBT工作时的功率,计算出功率模块的通态损耗和开通、关断损耗.考虑了温度对损耗计算的影响,并以此为基准利用ANSYS热分析软件建立了模型.根据仿真所得IGBT工作时的热分布云图,设计了一种适合功率模块的散热器;建立了实验电路,并测量了IGBT及散热器的实际工作温度,与仿真结果进行对比,从而证明了设计的合理性.The losses in the conduction, turning on and turning off of power module were worked out by measuring the working power of IGBT on the basis of a method for calculating the losses of IGBT. The impact of temperature on the losses calculation taken into consideration, a model was established by using ANSYS （a kind of thermal analysis software）, based on which a kind of radiator suitable for the power module was designed according to the thermal distribution contour map obtained from the simulated IGBT work. The experimental cir- cuit was set up, followed by measuring the actual working temperature of IGBT and the radiator. In comparison with the simulation results, the rationality of the design was proved.

关 键 词：IGBT 损耗 热分析 散热器 

分 类 号：TM924[电气工程—电力电子与电力传动]