A Design Optimization Tool for Maximizing the Power Density of 3-Phase DC-AC Converters Using Silicon Carbide (SiC) Devices

Ian Laird, Xibo Yuan*, James Scoltock, Andrew J. Forsyth

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

41 Citations (Scopus)
409 Downloads (Pure)

Abstract

The emergence of wide-bandgap devices, e.g., silicon carbide (SiC), has the potential to enable very high-density power converter design with high-switching frequency operation capability. A comprehensive design tool with a holistic design approach is critical to maximize the overall system power density, e.g, by identifying the optimal switching frequency. This paper presents a system level design tool that optimizes the power density (volume or mass) of a three-phase, two-level dc-ac converter. The design tool optimizes the selection of the devices, heatsink and passive components (including the design of the line, electromagnetic interference (EMI), and dc-link filters) to maximize the power density. The structure of the optimization algorithm has been organized to reduce the number of potential design combinations by over 99%, and thus, produces fast simulation times. The design tool predicts that when SiC devices are used instead of Si ones, the power density is increased by 159.4%. A 5 kW, 600-V dc-link, three-phase, two-level dc-ac converter was experimentally evaluated in order to confirm the accuracy of the design tool.

Original languageEnglish
Article number7931709
Pages (from-to)2913-2932
Number of pages20
JournalIEEE Transactions on Power Electronics
Volume33
Issue number4
Early online date18 May 2017
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • DC-AC converters
  • design optimization
  • power density
  • silicon carbide (SiC)
  • switching frequency

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