Application of WBG Power Devices in Future 3-Φ Variable Speed Drive Inverter Systems "How to Handle a Double-Edged Sword"
Johann W. Kolar, Jon Azurza Anderson, Spasoje Mirić, Michael Haider, Mattia Guacci, Michael Antivachis, Grayson Zulauf, David Menzi, Pascal S. Niklaus, J. Minibock, Panteleimon Papamanolis, Gwendolin Rohner, Neha Nain, Davide Cittanti, Dominik Bortis
Abstract
Latest research results on three-phase wide-bandgap (WBG) inverter systems with full-sinewave output voltage filtering are reported. A new soft-switching modulation scheme for two-level 1200 V SiC inverters is described. Furthermore, a new Figure-of-Merit for determining maximum multi-level (ML) bridge-leg efficiency is defined and low-voltage GaN devices are evaluated considering ML flying capacitor (FC) and multi-cell inverter structures. Finally, new integrated-filter buck-boost current DC-link inverter topologies are discussed.