压接式IGBT动态测试平台杂散电感的提取（英文）

发布时间：2018-11-26 19:54

【摘要】：压接式IGBT器件动态特性测试平台的杂散电感对于开关特性影响很大,准确提取测试回路中的杂散电感对于分析器件的开关特性非常关键。由于换流回路中存在二极管以及电阻,传统的杂散电感提取方法在提取杂散电感的过程中忽略了这些非线性电阻的影响,从而影响了计算结果的准确性。通过假设IGBT关断和下一个开通瞬态过程中,直流母线电压以及负载电流不变,提出同时采用关断和开通瞬态的电流、电压波形来提取杂散电感。这种方法消除了回路中非线性电阻的影响。为了验证这种方法的准确性,用Synopsis Saber软件进行了电路仿真分析;同时,搭建了压接式IGBT动态特性测试平台,在不同电压、电流等级条件下进行了开关特性测试以及杂散电感提取。仿真和实验结果验证了所提方法的正确性。
[Abstract]:The stray inductance of the dynamic test platform of IGBT devices has a great influence on the switching characteristics. It is very important to extract the stray inductors from the test circuit accurately to analyze the switching characteristics of the devices. Due to the existence of diodes and resistors in the converter circuit, the traditional method of extracting stray inductors ignores the influence of these nonlinear resistors in the extraction of stray inductors, thus affecting the accuracy of the calculation results. Based on the assumption that the DC bus voltage and load current are invariant during the IGBT turn-off and the next turn-on transient process, the transient current and voltage waveform of turn-off and turn-on are proposed to extract stray inductance. This method eliminates the influence of nonlinear resistance in the loop. In order to verify the accuracy of this method, the circuit simulation analysis is carried out with Synopsis Saber software. At the same time, the dynamic characteristic test platform of voltage-connected IGBT was built, and the switching characteristics and stray inductance extraction were carried out under different voltage and current levels. Simulation and experimental results show that the proposed method is correct.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);全球能源互联网研究院;
【基金】：国家自然科学基金项目(51477048) 国家重大科技专项02专项(2015ZX02301) 国家能源应用技术研究及示范工程项目(NY20150705)~~
【分类号】：TN322.8

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