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Accession Number N20130010982
Title Prognostics of Power Electronics, Methods and Validation Experiments.
Publication Date Sep 2012
Media Count 6p
Personal Author C. S. Kulkarni G. Biswas J. R. Celaya K. Goebel
Abstract Abstract Failure of electronic devices is a concern for future electric aircrafts that will see an increase of electronics to drive and control safety-critical equipment throughout the aircraft. As a result, investigation of precursors to failure in electronics and prediction of remaining life of electronic components is of key importance. DC-DC power converters are power electronics systems employed typically as sourcing elements for avionics equipment. Current research efforts in prognostics for these power systems focuses on the identification of failure mechanisms and the development of accelerated aging methodologies and systems to accelerate the aging process of test devices, while continuously measuring key electrical and thermal parameters. Preliminary model-based prognostics algorithms have been developed making use of empirical degradation models and physics-inspired degradation model with focus on key components like electrolytic capacitors and power MOSFETs (metal-oxide- semiconductor-field- effect-transistor). This paper presentscurrent results on the development of validation methods for prognosticsalgorithms of power electrolytic capacitors. Particularly, in the use ofaccelerated aging systems for algorithm validation. Validation of prognostics algorithms present difficulties in practice due to the lack of run-to-failure experiments in deployed systems. By using accelerated experiments, we circumvent this problem in order to define initial validation activities.
Keywords Accelerated life tests
Control equipment
Field effect transistors
Metal oxide semiconductors
Power converters
System failures
Voltage converters(Dc to dc)

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 49 - Electrotechnology
97I - Electric Power Production
Corporate Author National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1320
Contract Number NNA08CG83C

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