Stray Inductance Parameters Extraction Method for Power Converter Using High-frequency Oscillations

被引：0
|
作者：
Xiao Y. [1 ]
Xiang D. [1 ]
Li H. [2 ]
Zheng Y. [1 ]
Zhao N. [1 ]
机构：
[1] College of Electronics and Information Engineering, Tongji University, Shanghai
[2] College of Electrical Power Engineering, Shanghai University of Electric Power, Shanghai
来源：
Gaodianya Jishu/High Voltage Engineering | 2024年 / 50卷 / 02期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
double-pulse method; high-frequency oscillation; LC resonance; power converter; power electronics switching transient; stray inductance;
D O I：
10.13336/j.1003-6520.hve.20220497
中图分类号：
学科分类号：
摘要：
Aiming at the extraction of stray inductance parameters of a power converter, an LC resonance-based high-frequency oscillation method is proposed in this paper. By a series of converter on-site experiments, several resonant circuits are intentionally constructed, and the stray inductance parameters at different positions in power converter can be extracted by measuring the frequency of high-frequency oscillations. In this paper, the principle of the proposed high-frequency oscillation method is first introduced. The equivalent circuit models of different resonance experiments are established. Then, a 1700 V/450 A IGBT power converter system is taken as an example, and the feasibility and effectiveness of the high-frequency oscillation method are verified through simulation and experiment. Finally, the extraction results of the high-frequency oscillation method and the double-pulse testing method are compared and analyzed. The results show that the method proposed by the dissertation can effectively extract stray inductance parameters at different positions in a power converter, which is basically the same as the double-pulse testing method. The accuracy can achieve nH-level. © 2024 Science Press. All rights reserved.
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页码：775 / 783
页数：8
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