Prognosis of wire bond lift-off fault of an IGBT based on multisensory approach
Prognosis of wire bond lift-off fault of an IGBT based on multisensory approach
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DOI：
10.1109/apec.2016.7468291
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
M. Haque;J. Baek;Joseph Herbert;Seungdeog Choi
中科院分区：
文献类型：
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作者：
M. Haque;J. Baek;Joseph Herbert;Seungdeog Choi
逆变器单元的电源开关的安全和连续操作对于辅助逆变器单元的功能至关重要。本文提出了一种用于逆变器系统中广泛使用的功率开关IGBT中的引线键合故障的状态监测和预测的算法。该算法同时采用导通状态集电极发射极电压和集电极电流估计IGBT结温。这两个信号作为热敏电参数相互补充，从而更好地估计结温。该算法结合随机方法和Coffin曼森模型引入关键度矩阵，用于判断IGBT更换的必要性。仿真结果和实验数据都验证了所提出的方法。所提出的算法的范围，以进一步修改为一个更复杂的系统在未来的状态监测。
The safe and continuous operation of the power switches of the inverter units is vital in assisting the functioning of the inverter units. This paper proposes an algorithm for the condition monitoring and prognosis of wire-bond fault in an IGBT- extensively used power switch in inverter systems. The proposed algorithm employs both on-state collector emitter voltage and collector current in the estimation of IGBT junction temperature. These two signals complement each other as thermal sensitive electrical parameters and results in better estimation of junction temperature. This algorithm has integrated a stochastic method and Coffin Manson model to introduce criticality matrix which is used to determine the necessity for IGBT replacement. Both simulation result and experiment data verified the proposed. The proposed algorithm has the scope to be further modified for the condition monitoring of a more complex system in the future.