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Modeling power converters using hard switched silicon carbide MOSFETs and Schottky barrier diodes
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Alexakis, Petros, Alatise, Olayiwola M., Ran, Li and Mawby, P. A. (Philip A.) (2013) Modeling power converters using hard switched silicon carbide MOSFETs and Schottky barrier diodes. In: Power Electronics and Applications (EPE), 2013 15th European Conference on, Lille, France, 2-6 Sep 2013. Published in: 2013 15th European Conference on Power Electronics and Applications (EPE) pp. 1-9. doi:10.1109/EPE.2013.6631758
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Official URL: http://dx.doi.org/10.1109/EPE.2013.6631758
Abstract
The emergence of silicon carbide MOSFETs and Schottky Barrier Diodes (SBD) at higher voltage and current ratings is opening up new possibilities in the design of energy dense power converters. One of the main advantages of these wide bandgap unipolar devices is the use of fast switching to enable the size reduction of passive components. However, packaging constraints like parasitic inductances limit how fast the MOSFETs and diodes can switch, because of high frequency electromagnetic oscillations or ringing. Ringing is a reliability concern as it stresses the devices and causes additional losses to the switching losses. In this paper, a framework of power converter design is introduced based on the analytical modelling of current commutation between the MOSFET and the diode. The analysis of the model is done in the frequency domain which lends it to easy use and computational efficiency. The impact of the parasitic inductances on the switching transients have been analyzed. The models are compared with experimental measurements and are shown to provide fast and accurate analysis of the switching transients. The results show the necessity of accounting for ringing when modelling power losses.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Journal or Publication Title: | 2013 15th European Conference on Power Electronics and Applications (EPE) | ||||
| Publisher: | IEEE | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Page Range: | pp. 1-9 | ||||
| DOI: | 10.1109/EPE.2013.6631758 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | Power Electronics and Applications (EPE), 2013 15th European Conference on | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Lille, France | ||||
| Date(s) of Event: | 2-6 Sep 2013 |
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