基于小波奇异熵理论的IGBT模块键合线脱落故障特征分析

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Abstract To deal with the problem that the implementation of recognition and monitoring of bond wire failure inside IGBT module needs complex auxiliary circuit. A new assessment method of bond wire and paralleled IGBT chip failure by use of the real-time switching waveforms of IGBT module is presented in this paper. The work starts from the structural characteristics of IGBT module,and draws the conclusion that both bond wire failure and paralleled IGBT chip failure would change the gate turn-off voltage waveform of IGBT module. The expected data for analyzing and processing are derived through the test of cutting the bond wires of an open sample manually on purpose. Taking into account the data quantity of IGBT module from putting into operation to failure is very large,and it is need to compress the data and excavate the useful information contained in it. Fault feature of gate voltage signal is extracted by use of the wavelet singular entropy theory,and the fault characters of different fault types are compared. The research results provide an important basis for realizing the health assessment of IGBT module.

Key words： IGBT module bond wire gate voltage wavelet singular entropy fault characters

Published: 11 December 2013

PACS:

TN386

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	Shen Gang
	Zhou Luowei
	Du Xiong
	Yang Xu
	Xu Mingwei

Cite this article:

Shen Gang,Zhou Luowei,Du Xiong等. Characteristics Analysis of IGBT Module with Bond Wire Lift-off Based on Wavelet Singular Entropy Theory[J]. Transactions of China Electrotechnical Society, 2013, 28(7): 165-171.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I7/165

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作者简介
沈刚男,1984年生,硕士研究生,研究方向为风力发电中功率器件的故障机理、在线监测。周雒维男,1954年生,教授,博士生导师,研究方向为电力电子技术、电路理论及应用、新能源发电可靠性等。