绝缘栅双极晶体管模块温度的快速求解算法

发布时间：2018-01-13 14:18

  本文关键词：绝缘栅双极晶体管模块温度的快速求解算法　出处：《高压电器》2017年04期 　论文类型：期刊论文

  更多相关文章： IGBT模块温度 拟合 插值 电热比拟 差分化 直接法

【摘要】：在绝缘栅双极晶体管(IGBT)模块的高效散热设计、变流器系统的长期可靠性评估等方面,通常需要了解IGBT模块温度,而现有模型及方法仿真耗时严重,难以实现IGBT模块温度的快速求解。针对该问题,文中借鉴直接法的思想,提出了一种新的IGBT模块温度快速求解算法。基于拟合及插值算法,推导并建立了IGBT模块功率损耗模型;基于电热比拟理论,探讨并建立了集中参数的IGBT模块等效Cauer传热网络模型,并将传热微分方程差分化;最终,在同一电路仿真器中构建出IGBT模块温度的快速求解算法。在两电平三相逆变器的算例中,通过与英飞凌IPOSIM的温度计算结果对比,表明文中算法最大误差为3.01%,且温度变化趋势与IPOSIM基本一致;通过与传统基于IGBT器件物理模型、热网络组件模型的计算时间对比,表明文中算法计算速度提高了近1 255倍。
[Abstract]:In the aspects of high efficiency heat dissipation design of insulated gate bipolar transistor (IGBT) module and long-term reliability evaluation of converter system, it is usually necessary to know the temperature of IGBT module. However, the simulation of the existing models and methods is time-consuming, so it is difficult to quickly solve the temperature of IGBT module. In order to solve this problem, the idea of direct method is used for reference in this paper. In this paper, a new fast algorithm for calculating the temperature of IGBT module is proposed. Based on the fitting and interpolation algorithm, the power loss model of IGBT module is derived and established. Based on the theory of electrothermal analogy, the equivalent Cauer heat transfer network model of IGBT module with concentrated parameters is discussed and established, and the differential heat transfer differential equation is differentiated. Finally, a fast algorithm for calculating the temperature of IGBT module is constructed in the same circuit simulator. In the example of two-level three-phase inverter, the temperature calculation results of Infineon IPOSIM are compared with those of Infineon IPOSIM. The results show that the maximum error of the algorithm is 3.01, and the trend of temperature variation is basically consistent with that of IPOSIM. Compared with the traditional physical model based on IGBT and the calculation time of the thermal network component model, it shows that the computational speed of the proposed algorithm is nearly 1 255 times higher than that of the traditional physical model based on IGBT.
【正文快照】： 绝缘栅双极晶体管模块温度的快速求解算法 唐 波 1 ， 刘 任 1 ， 鲁少军 2 ，， 赵志斌 3 ， 叶 莉 1 （1. 三峡大学电气与新能源学院 ， 湖北 宜昌 443002； 2. 国网湖北省电力公司检修公司 ， 武汉 430050； 3. 华北电力大学电气与电

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