电力电子装置强风散热模型简化方法及应用

林弘毅,郭潇,伍梁,陈国柱

Simplification method and application of thermal model of forced air cooling system for power electronic device

Hong-yi LIN,Xiao GUO,Liang WU,Guo-zhu CHEN

表 2 SVG满载时散热系统的仿真和实验结果

Tab.2 Simulation and test results of cooling system with SVG full load

参数 仿真值 实验值 Q/W 768 787 Δtc/℃ 38.2 43.1 Δth/℃ 21.1 21.9 Rth,h-a/(K·W−1) 0.027 5 0.027 8 ${\sigma _{{R_{{\rm{th}}}}}} $（精确热模型） 20.7% 19.4% Δth,err/℃ 4.9 4.7 ${\sigma _{{R_{{\rm{th}}}}}} $（简化热模型） 18.8% 17.2% Δth,err/℃ 4.4 4.1