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Reliability of power converters is crucial for mission critical systems. Among the components that are susceptible to failure, power semiconductor devices are one of the major causes of the power converter failures. This paper focuses on the remaining useful lifetime (RUL) estimation of degraded power MOSFETs, which are stressed by thermal cycling. The relative change in on-state resistance is identified...
Condition based maintenance and fault prognosis is an important need for modern mission-critical industry. In this paper, a novel estimation method for remaining useful lifetime of rotary machines using the vibration signal is introduced. The proposed method employs a linear dimension reduction for extracting a health indicator from wavelet packet transform of vibration signal picked by accelerometers...
This paper focuses on the remaining useful lifetime (RUL) estimation of power MOSFETs, which are stressed by thermal cycling. The relative change in on-state resistance is identified as the aging precursor for die attach solder degradation after exhaustive experiments. A data-driven RUL estimation algorithm based on a linear approximation model is proposed. The empirical coefficients are estimated...
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