IGBT電力電子系統(tǒng)小時(shí)間尺度動(dòng)態(tài)性能分析與計(jì)算的電磁場(chǎng)-電路耦合模型
發(fā)布時(shí)間：2018-11-25 13:39
【摘要】：為了解決現(xiàn)有模型不完全適用于小時(shí)間尺度電力電子系統(tǒng)瞬態(tài)性能分析與計(jì)算的不足,建立用于IGBT電力電子系統(tǒng)小時(shí)間尺度動(dòng)態(tài)特性分析、計(jì)算的三維電磁場(chǎng)-電路耦合計(jì)算模型,并提出其求解的迭代計(jì)算方法。為精確描述小時(shí)間尺度下IGBT內(nèi)部瞬態(tài)電磁場(chǎng)及其分布規(guī)律,建立的IGBT本體三維有限元模型考慮位移電流、趨膚效應(yīng)和引線鄰近效應(yīng)等復(fù)雜因素的影響;為考慮極小時(shí)間尺度下線路中雜散參數(shù)的電磁效應(yīng),高階雜散參數(shù)電路模型采用多段等效電路模擬雜散參數(shù)的影響,同時(shí)采用諧態(tài)電磁場(chǎng)數(shù)值分析計(jì)算方法提取模型參數(shù)以考慮趨膚效應(yīng)等的影響�；贗GBT內(nèi)部電磁暫態(tài)過程的分析,提出一種改進(jìn)的IGBT電路模型;為兼顧計(jì)算精度和計(jì)算時(shí)間的要求,提出等效高階電路模型的一種降階方法。仿真計(jì)算和實(shí)驗(yàn)測(cè)試結(jié)果證明了所建模型及求解方法的有效性和正確性。
[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.
【作者單位】： 浙江大學(xué)電氣工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51490682)
【分類號(hào)】：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.
【作者單位】： 浙江大學(xué)電氣工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51490682)
【分類號(hào)】：TN322.8
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本文編號(hào)：2356301
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