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This paper proposes an Active Gate Current Control (AGCC) strategy for non-insulating gate WBG devices, for example, gallium nitride gate-injection-transistor (GaN-GIT) and silicon carbide super junction transistor (SiC-SJT). It provides a tool for power converter designers to further improve the converter efficiency and to extend the life time of those higher cost power transistors. By continuously...
This paper presents an evaluation of a newly released power stage direct drive GaN HEMT. The double pulse test is performed and the dynamic performance is characterized. PCB layout optimization is also investigated for improved switching transients. It is shown that the direct drive system provides simplified circuit design, reduced number of external components, and small gate loop parasitics. Also,...
Behavioral models of semiconductor devices have been widely implemented in simulation tools because they have simple structures and easy parameter extraction procedures. However, the IGBT behavioral model is more complicated than that of the MOSFET because the BJT structure exhibits charge storage phenomenon, such as the tail current. In this paper, a simple IGBT behavioral model with easy parameter...
In this paper, a comprehensive evaluation work on 1.7 kV SiC Super Junction Transistor (SJT) power module and 1.7 kV SiC MOSFET power modules is presented. Both device static and dynamic performance is extracted and compared at wide device current range and temperature range. The data presented in this paper can be used as input for medium voltage power conversion system power transistor selection,...
In this paper, we present a comprehensive evaluation of the latest 600 V class Gallium Nitride based Gate Injection Transistor (GaN-GIT) for high temperature and high efficiency applications. In this study, the Panasonic GITs are used as the reference for latest GaN-GIT technology. Static and dynamic testing was performed on the two GaN-GIT versions to extract critical static parameters and switching...
Multilevel inverters have been widely used in medium- and high-voltage applications. Selective harmonic elimination for the staircase voltage waveform generated by multilevel inverters has been studied extensively in the last decade. Most of the published methods on this topic were based on solving high-order multivariable polynomial equation groups derived from Fourier series expansion. This paper...
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