Electrothermal Stresses in SiC MOSFET and Si IGBT 3L-NPC Converters for Motor Drive Applications
Conference: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/16/2017 - 05/18/2017 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2017
Pages: 8Language: englishTyp: PDF
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Authors:
Davletzhanova, Zarina; Alatise, Olayiwola; Ortiz Gonzalez, Jose; Konaklieva, Sylvia; Bonyadi, Roozbeh (University of Warwick, UK)
Abstract:
The 3L-NPC converter topology is becoming increasingly attractive for applications like medium-voltage industrial AC-drives, wind energy conversion systems and grid-connected converters because of its better performance compared with the 2-level converter. In these converters, each power device is subjected to different mission profiles depending on the application and switching strategy. Hence the prediction of the operating junction-temperature, which can also be used for lifetime estimation, is not straightforward. This paper uses motor drive simulations as well as experimental results from a single phase 3L-NPC converter with different technologies (Si/SiC) to investigate the problem of electrothermal stress distribution in power modules.