考虑不同失效点影响的风电变流器IGBT模块可靠性评估

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) Pub Date : 2020-12-07 DOI:10.1109/NEMO49486.2020.9343566

Wei Lai, Zhi Wang, Minyou Chen, Hongjian Xia, Dan Luo, Yunhai Wei, B. Gao, Yigao Chen

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引用次数: 1

摘要

随着风力发电机组投资规模的扩大，研究其核心部件的可靠性和寿命估计模型具有重要意义。考虑不同失效点对剩余寿命的影响，研究了变流器在失效点的响应。研究发现，焊点疲劳和DBC (Direct Bonding Copper)焊点疲劳对热负荷的影响是不同的，两者在使用过程中发生频率较高。根据失效部位，提出了一种修正的cauer型热模型。采用改进的寿命模型，计算了双馈感应发电机(DFIG)变换器在不同健康状态和故障部位下的剩余寿命。可靠性分析是转炉健康管理的重要内容。

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Reliability Evaluation of IGBT Modules in Wind Power Converter Considering the Effects of Different Failure Sites

With the extensive investment of wind turbine, it is significant to study the reliability and lifetime estimation model of its core components. Considering the effect of different failure sites on the remaining lifetime, the response of the converter at failure sites is studied. It is found that die attach solder fatigue and DBC (Direct Bonding Copper) solder fatigue, which happen frequently during the serving time, have different effects on thermal loads. A modified Cauer-type thermal model is proposed according to the failure sites. Using a modified lifetime model, Remaining lifetime of the DFIG (Doubly Fed Induction Generator) converter is calculated under different health conditions and failure sites. Reliability analysis is very important to the health management of converter.

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来源期刊

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO)

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