IGBT电力电子系统小时间尺度动态性能分析与计算的电磁场-电路耦合模型
发布时间：2018-11-25 13:39
【摘要】：为了解决现有模型不完全适用于小时间尺度电力电子系统瞬态性能分析与计算的不足,建立用于IGBT电力电子系统小时间尺度动态特性分析、计算的三维电磁场-电路耦合计算模型,并提出其求解的迭代计算方法。为精确描述小时间尺度下IGBT内部瞬态电磁场及其分布规律,建立的IGBT本体三维有限元模型考虑位移电流、趋肤效应和引线邻近效应等复杂因素的影响;为考虑极小时间尺度下线路中杂散参数的电磁效应,高阶杂散参数电路模型采用多段等效电路模拟杂散参数的影响,同时采用谐态电磁场数值分析计算方法提取模型参数以考虑趋肤效应等的影响。基于IGBT内部电磁暂态过程的分析,提出一种改进的IGBT电路模型;为兼顾计算精度和计算时间的要求,提出等效高阶电路模型的一种降阶方法。仿真计算和实验测试结果证明了所建模型及求解方法的有效性和正确性。
[Abstract]:In order to solve the problem that the existing models are not fully applicable to the transient performance analysis and calculation of small time scale power electronic systems, a small time scale dynamic characteristic analysis for IGBT power electronic systems is established. The three dimensional electromagnetic field-circuit coupling model is calculated, and an iterative method for its solution is presented. In order to accurately describe the transient electromagnetic field and its distribution in IGBT on a small time scale, the 3D finite element model of IGBT body takes into account the effects of complex factors such as displacement current, skin effect and lead proximity effect. In order to consider the electromagnetic effect of stray parameters in the transmission line on a minimal time scale, the multistage equivalent circuit is used to simulate the effect of stray parameters in the high-order stray parameter circuit model. At the same time, the numerical analysis method of harmonic electromagnetic field is used to extract the model parameters to consider the effect of skin effect and so on. Based on the analysis of electromagnetic transient process in IGBT, an improved IGBT circuit model is proposed, and a reduced order method of equivalent high-order circuit model is proposed to meet the requirements of calculation accuracy and calculation time. The simulation and experimental results show the validity and correctness of the proposed model.
【作者单位】： 浙江大学电气工程学院;
【基金】：国家自然科学基金资助项目(51490682)
【分类号】：TN322.8
[Abstract]:In order to solve the problem that the existing models are not fully applicable to the transient performance analysis and calculation of small time scale power electronic systems, a small time scale dynamic characteristic analysis for IGBT power electronic systems is established. The three dimensional electromagnetic field-circuit coupling model is calculated, and an iterative method for its solution is presented. In order to accurately describe the transient electromagnetic field and its distribution in IGBT on a small time scale, the 3D finite element model of IGBT body takes into account the effects of complex factors such as displacement current, skin effect and lead proximity effect. In order to consider the electromagnetic effect of stray parameters in the transmission line on a minimal time scale, the multistage equivalent circuit is used to simulate the effect of stray parameters in the high-order stray parameter circuit model. At the same time, the numerical analysis method of harmonic electromagnetic field is used to extract the model parameters to consider the effect of skin effect and so on. Based on the analysis of electromagnetic transient process in IGBT, an improved IGBT circuit model is proposed, and a reduced order method of equivalent high-order circuit model is proposed to meet the requirements of calculation accuracy and calculation time. The simulation and experimental results show the validity and correctness of the proposed model.
【作者单位】： 浙江大学电气工程学院;
【基金】：国家自然科学基金资助项目(51490682)
【分类号】：TN322.8
【相似文献】
相关期刊论文 前10条
1 钱照明,陈辉明,吕征宇,赵荣祥,徐德鸿,吴晓波,贺益康,汪i裆，
本文编号：2356301
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2356301.html
