articleIEEE Sensors JournalOct 2, 2025Closed access

Feasibility Study of Mechanical Stress Wave Detection in Power Semiconductor Devices Using Bare FBG Sensors

YHYunze HeMYMan YuanQLQiying LiLTLonghai TangWYWenxue Yang

Hunan University

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Abstract

Power semiconductor devices generate mechanical stress wave (MSW) signals during switching processes, which can be used for condition monitoring (CM) of these devices with the advantages of noninvasive and non-destructive monitoring. Existing MSW signal detection methods are susceptible to electromagnetic interference and environmental factors (such as high temperature, high voltage, confined spaces, or structural constraints), which limit their adaptability in complex working conditions. Bare fiber Bragg grating (FBG) sensors offer strong resistance to electromagnetic interference and excellent environmental adaptability. Therefore, this paper proposes a transient high-frequency MSW measurement method for…

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46
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8

Topics & keywords

Topics
Keywords
  • Electromagnetic interference
  • Fiber Bragg grating
  • Interference (communication)
  • Semiconductor device
  • Semiconductor
  • SIGNAL (programming language)
  • Transient (computer programming)
  • Power (physics)
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