Long term reliability testing of HV-IGBT modules in worst case traction operation |
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| Affiliation: | 1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China;2. Sichuan Electric Power Design & Consulting Co., Ltd., Chengdu, China;1. Department of Industrial and Systems Engineering, Rutgers University–New Brunswick, Piscataway, NJ 08854 USA;2. Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | High reliability level is required for IGBT modules used in power converters in railway traction application which however are subject to high stress because of the typical cycling operation which causes thermomechanical fatigue. The paper reports about Ansaldo Trasporti activity in IGBT's reliability testing. Facility simulating worst case traction operation is described and the result after operation is presented: due to such stressing action, a solder delamination at the baseplate seems to be the first failure mechanism to be excited. |
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