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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Analysis of field-stressed modules from a fuel-cell vehicle’s main inverter

1
Infineon Technologies Korea Co., Ltd
2
Infineon Technologies AG
*
Author to whom correspondence should be addressed.
World Electr. Veh. J. 2015, 7(2), 324-329; https://doi.org/10.3390/wevj7020324
Published: 26 June 2015
PDF [405 KB, uploaded 18 May 2018]

Abstract

This paper presents a reliability study of a directly cooled and an indirectly cooled IGBT module after a test drive of 85.000 Km in a fuel cell electric vehicle. In this case, the car was mainly driven on highway, only a minor part of the distance was driven in urban areas. At the end of the test drive, the power control unit was disassembled and analyzed with regard to the lifetime consumption. First, electrical measurements were carried out and the results were compared with the ones obtained directly after module production (End of Line test). After that, ultrasonic microscopy was performed in order to investigate any delamination in the solder layers. As a third step, an optical inspection was performed to monitor damages in the housing, formation of cracks or degradation of wire bonds. The results show none of the depicted failure modes could be found on the tested power modules after the field test. Obviously, no significant life time consumption could be observed.
Keywords: Fuel Cell Electric Vehicle (FCEV); Field-stressed power module; Lifetime consumption; Quality analysis; Reliability test Fuel Cell Electric Vehicle (FCEV); Field-stressed power module; Lifetime consumption; Quality analysis; Reliability test
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Heo, H.-S.; Pannemann, C.; Choi, Y.-K.; Castro, C.; Strass, A. Analysis of field-stressed modules from a fuel-cell vehicle’s main inverter. World Electr. Veh. J. 2015, 7, 324-329.

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