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A Prognostic and Warning System for Power Electronic Modules in Electric, Hybrid, and Fuel Cell Vehicles

机译：电动，混合动力和燃料电池车辆电力电子模块的预测和警告系统

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摘要

Reliability of power electronics modules is of paramount importance for the commercial success of various types of electric vehicles. In this paper, we study the technical feasibility of detecting early symptoms and warning signs of power module degradation due to thermomechanical stress and fatigue, and developing a prognostic system that monitors the state of health of the power modules in electric, hybrid, and fuel cell vehicles. A signature degradation trace of the on-voltage of IGBT modules was observed from accelerated power cycling test. This on-voltage "anomaly" can be attributed to sequential events of solder joint degradation followed by wirebond lift-off mechanisms. A quasi real-time IGBT failure prognostic algorithm based on monitoring the abnormal VCEsat variation at specific currents and temperatures is developed. The algorithm was verified using extensive SIMULINK modeling. The prognostic system can be implemented cost-effectively in existing vehicle hardware/software architectures.
机译：功率电子模块的可靠性对于各种类型的电动车辆的商业成功至关重要。在本文中，我们研究了检测由于热机械应力和疲劳引起的早期症状和警告信号劣化的技术可行性，以及开发一种预后系统，监测电动，混合动力和燃料电池中电力模块的健康状况车辆。从加速功率循环试验中观察到IGBT模块的上电压的签名劣化轨迹。该电压的“异常”可归因于焊接接头降解的顺序事件，然后是线桥剥离机构。开发了一种基于监测特定电流和温度异常VCESAT变化的准实时IGBT失效预后算法。使用广泛的Simulink建模验证算法。预后系统可以在现有的车辆硬件/软件架构中成本有效地实现。

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