功率循环下IGBT模块电热参数变化规律分析

发布时间：2018-06-02 07:06

本文选题：IGBT模块 + 功率循环　；参考：《火力与指挥控制》2017年05期

【摘要】：为了分析IGBT模块老化过程中电热参数的变化规律,对IGBT模块进行了功率循环加速老化试验,并基于单脉冲测试方法在加速老化试验进程中每间隔1 000次功率循环,测取一次IGBT的结温、集电极电流与饱和压降三维关系曲面、开关能耗、热阻抗以及瞬态热阻抗曲线。IGBT模块老化失效时,其饱和压降、开通能耗、关断能耗以及热阻较其初始值分别增大了3.92%、12.05%、18.87%和22.65%,试验结果表明随着IGBT模块功率循环次数的增多,相同工作条件下IGBT饱和压降的增幅逐渐加大,而饱和压降、结温和集电极电流三者间的内在关系没有明显变化;IGBT瞬态热阻抗曲线暂态部分几乎不变,稳态部分向上移动的幅度逐渐加大;测取的IGBT模块电热参数中饱和压降增幅最小,开关能耗增幅较大,模块热阻的增幅最为明显。
[Abstract]:In order to analyze the variation of electrothermal parameters during the aging of IGBT modules, a power cycle accelerated aging test was carried out for IGBT modules. Based on the single pulse test method, the power cycles per 1000 cycles per interval were used in the accelerated aging test process. The junction temperature, collector current and saturation voltage drop surface of the primary IGBT are measured. When the switching energy consumption, thermal impedance and transient thermal impedance curve. The turn-off energy consumption and thermal resistance increase by 18.87% and 22.65%, respectively, compared with its initial value. The experimental results show that with the increase of IGBT module power cycle times, the increase of IGBT saturation pressure drop increases gradually under the same working conditions, but the saturation pressure drop increases gradually. There is no obvious change in the intrinsic relationship between junction and collector current. The transient part of transient thermal impedance curve of IGBT is almost unchanged, the amplitude of steady part moving upward is gradually increasing, and the saturation pressure drop is the smallest in the measured electrothermal parameters of IGBT module. Switch energy consumption increases greatly, the increase of module thermal resistance is the most obvious.
【作者单位】：山西大学;河北工业大学电磁场与电器可靠性省部共建重点实验室;
【基金】：山西省教育厅“面向工程、探索创新”电气工程及其自动化专业建设基金资助项目
【分类号】：TN322.8

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