Electrothermal Stresses in SiC MOSFET and Si IGBT 3L-NPC Converters for Motor Drive Applications

Konferenz: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
16.05.2017 - 18.05.2017 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2017

Seiten: 8Sprache: EnglischTyp: PDF

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Autoren:
Davletzhanova, Zarina; Alatise, Olayiwola; Ortiz Gonzalez, Jose; Konaklieva, Sylvia; Bonyadi, Roozbeh (University of Warwick, UK)

Inhalt:
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.