Electrical failure mode and effect analysis of a 3.3 kW onboard vehicle battery charger
Paper in proceeding, 2016

Reliability is one important aspect for further improvement of power electronic converters. The improvement trend is towards a higher power density, and a higher efficiency with a lower price. Those performance indices are normally in contradiction with the reliability. A failure mode and effect analysis (FMEA) of a 3.3 kW onboard battery charger is presented for the electrical part of the charger. The FMEA results are used to prioritize, investigate and analyze important fault cases in semiconductors, dc bus capacitors and sensors. Possible reasons of each fault, appropriate fault detection methods, possible mitigation algorithms and some design improvements are shortly presented. The calculated risk numbers confirm that the reliability of the charger is considerable improved consequently.


Saeid Haghbin

Chalmers, Energy and Environment, Electric Power Engineering

18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe; Karlsruhe; Germany; 5-9 September 2016

Art no 7695374-
978-1-5090-1410-1 (ISBN)

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering





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