Accelerating Commercialization of SiC Power Devices: Large Volume Applications and Fabrication
Silicon (Si) power devices have dominated power electronics due to their low cost volume production, excellent starting material quality, ease of processing, and proven reliability. Although Si power devices continue to make progress, they are approaching their operational limits primarily due to their relatively low bandgap and critical electric field that result in high conduction and switching losses, and poor high temperature performance.
In this presentation, the favorable material properties of Silicon Carbide (SiC) devices, which allow for highly efficient power electronic systems with reduced form factor and reduced cooling requirements, will be highlighted. Emphasis will be placed on high impact application opportunities where SiC devices are expected to displace their incumbent Si counterparts. These include “more electric aerospace” with weight, volume, and cooling system reductions contributing to energy savings and low emissions; automotive power electronics with reduced losses and relaxed cooling requirements; more efficient, flexible, and reliable grid applications with reduced system footprint; variable frequency drives for efficient high power electric motors at reduced overall system cost; and novel data center topologies with reduced cooling loads and higher efficiencies. Cost reduction strategies will be outlined elucidating the path to the projected $1.9B SiC device market by 2024. Foundry infrastructure considerations and design of SiC MOSFETs, currently being inserted in the majority of SiC based power electronic systems, will be discussed. Fundamentals of SiC processing will be presented stressing the unique aspects involved in making the transition from Si fabrication.
Prof. Victor Veliadis
Executive Director and CTO, PowerAmerica on December 5, 2019 at 3:15 PM in MRC 136.
Dr. Victor Veliadis is Executive Director and CTO of PowerAmerica, which is a U.S. Department of Energy wide bandgap power electronics Manufacturing Innovation Institute. Dr. Veliadis manages a budget in excess of $30 million per year that he strategically allocates to over 35 industrial, University, and National-Laboratory projects, to enable U.S. leadership in WBG power electronics manufacturing, work force development, job creation, and energy savings.
Dr. Veliadis has given over 60 invited presentations/tutorials, and keynotes at major conferences in India, Korea, China, Europe and the U.S. He is an IEEE Fellow and an IEEE EDS Distinguished Lecturer. Dr. Veliadis has 25 issued U.S. patents, 6 book chapters, and over 120 peer-reviewed technical publications to his credit. He is also Professor in Electrical and Computer Engineering at North Carolina State University. Dr. Veliadis received the Ph.D. degree in Electrical and Computer Engineering from Johns Hopkins University in 1995. Prior to taking an executive position at Power America in 2016, Dr. Veliadis spent 21 years in the semiconductor industry where his work included design, fabrication, and testing of 1-12 kV SiC SITs, JFETs, MOSFETs, Thyristors, and JBS and PiN diodes, as well as financial and operations management of a commercial foundry. Dr. Veliadis has taught at Johns Hopkins University, St. Joseph University, and Ursinus College. He has received military training in the Army Infantry, and is a third degree black belt in Shotokan karate.
The Department of Electrical and Computer Engineering, sometimes in conjunction with other NC State departments makes an ongoing effort to invite the brightest experts from academia, business, and research to come speak and share their ideas, experiences, and research with faculty, students, and alumni at NC State.