Condition Monitoring in a Power Module Using On-State Resistance and Case Temperature | Zendy

Wei Lai | Zendy; Yuanpei Zhao | Zendy; Minyou Chen | Zendy; Yueyue Wang | Zendy; Xueni Ding | Zendy; Shengyou Xu | Zendy; Liangming Pan | Zendy

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Condition Monitoring in a Power Module Using On-State Resistance and Case Temperature

Author(s) -

Wei Lai,

Yuanpei Zhao,

Minyou Chen,

Yueyue Wang,

Xueni Ding,

Shengyou Xu,

Liangming Pan

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2879314

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

Power electronics are widely used in energy conversion systems due to their high efficiency. Finding and replacing the defective power electronic modules timely by monitoring the ageing state of devices can greatly improve the security of power converters and reduce the loss caused by the device failure. Packaging-related fatigue has been identified as one of the main causes of the failures of power electronic modules. This paper proposes a method to monitor the fatigue inside a module by identifying the increase of internal on-state resistance under a certain operation conditions due to the device packaging-related fatigue. Multiple physical field model results show that the junction temperature increases with the thermal resistance, which causes an increase in the on-state resistance. Therefore, the healthy state of power modules can be diagnosed by comparing the difference of the on-state resistance before and after ageing in the same case temperature, which can be measured directly. Experiments and simulations are conducted to demonstrate the concept and verify the method.

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