Webinars

 

Upcoming Webinars - 

 

Power-Dense High-Efficiency-Coolant-Capable 200 kW Silicon Carbide Inverter for Heavy-Duty Vehicles

Presenter:  Brij N. Singh, John Deer Inc., USA
Date:  Wednesday, September 18, 2019, 11:00am EDT Rescheduled from August 14, 2019

Abstract:  This presentation will discuss public information related to John Deere project funded by the US Department of Energy - PowerAmerica Institute at North Carolina State University, Raleigh. Through PowerAmerica, John Deere has formed a collaboration with researchers from the US Department of Energy National Renewable Energy Laboratory to develop a 200 kW 1050 VDC silicon carbide (SiC) dual-inverter. The SiC inverter converts vehicle engine power into electrical power needed for the permanent-magnet-motor based power-train used in heavy-duty construction and mining vehicles. The presentation will cover the development and test verification of various technologies deployed in the successful realization of a power-dense (greater than 40 kW/Liter) high-temperature (suitable for 115°C coolant) high-efficiency (greater than 98% over entire range of coolant) SiC dual-inverter. Test results from various generations of the SiC inverter will be presented. In April 2017, the Fargo, North Dakota-based John Deere Electronic Solutions (JDES) successfully demonstrated the SiC inverter in a John Deere 644K hybrid front loader vehicle, using the engine radiator fluid to cool the SiC power electronics. The SiC inverter technology demonstration took place at John Deere Dubuque Works (JDDW) in Dubuque, Iowa. Since then this SiC inverter has been operating on vehicles resulting over 2,000 hours experience from real-world applications of SiC power electronics technology. The DOE-PowerAmerica funding has greatly helped John Deere to accelerate the development of SiC inverter technology including the realization of key commercialization objectives.   

YouTube link related to JD 644K Hybrid front loader vehicle is; https://www.youtube.com/watch?v=j1g0NwhO4Fg

Biography:

Brij N. Singh is a senior staff engineer in John Deere Inc., USA and leading the US Department of Energy - PowerAmerica (DOE-PowerAmerica) funded project to develop a 200 kW SiC inverter for heavy-duty vehicle applications. Brij has earned Ph.D. degree in Electrical Engineering from the Indian Institute of Technology, New Delhi, India, in 1996. In 1996, Brij joined the École de Technology Supérieure, Université du Québec, Montreal, QC, Canada, as a Post-Doctoral Fellow. In 1999, Brij joined Concordia University, Montreal, QC, Canada as a Research Fellow. In 2000, Brij joined the Department of Electrical Engineering and Computer Science, Tulane University, New Orleans, Louisiana, as an Assistant Professor. In 2007, Brij joined John Deere in Fargo, North Dakota as a power electronics staff engineer. In Tulane, Brij received numerous teaching awards for outstanding instructions in electrical engineering. In John Deere, Brij received numerous awards for product and technology innovations and team collaboration activities. Brij has published over 90 research papers in various Journals including IEEE Transactions and IET Journals. Brij has 22 US patents, one trade secret, and numerous pending patents. Brij’s scholarly work and publications have been cited by his peers over 6000 times.  Brij is a senior member of the IEEE.

 

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Remaining Challenges for Designs with High Power Wide Bandgap Power Devices - A Circuit Perspective

Presenter:  Dr. Jin Wang, The Ohio State University, USA
Date:  Tuesday, September 3, 2019, 11:00am EDT 
Sponsored by the IEEE Power Electronics Society

Abstract:  The talk will focus on high power applications of Gallium Nitride (GaN) and Silicon Carbide (SiC) devices. It will start with a brief introduction of examples of state-of-the-art high power GaN and SiC converters. Then, common challenges that are faced by both GaN and SiC devices including gate drive designs, high dv/dt caused reflective waves, electromagnetic interference, partial discharge, etc. will be discussed. Specific challenges for the implementations of SiC in medium and high voltage applications will also be discussed.

Biography:

Jin Wang received his Ph.D. from Michigan State University, East Lansing, in 2005. From Sept 2005 to Aug 2007, he worked at the Ford Motor Company as a Core Power Electronics Engineer. He joined the Ohio State University in 2007 as an Assistant Professor and was promoted to Associate Professor in 2013 and Full Professor in 2017. His research interests include wide bandgap power devices and their applications, high-voltage and high-power converter/inverters, integration of renewable energy sources, and electrification of transportation. Dr. Wang has over 180 peer-reviewed journal and conference publications and 8 patents. Dr. Wang received the IEEE Power Electronics Society Richard M. Bass Young Engineer Award and the National Science Foundation’s CAREER Award in 2011. At The Ohio State University, Dr. Wang received the Ralph L. Boyer Award for Excellence in Undergraduate Teaching Innovation in 2012, the Lumley Research Award in 2013 and the Harrison Faculty Award for Excellence in Engineering Education in 2017. Dr. Wang served as the General Chair and the Steering Committee Chair for the IEEE Future Energy Challenge in 2016 and 2017, respectively. Dr. Wang had been an Associate Editor for the IEEE Transactions on Industry Applications from 2008 to 2014. Currently, Dr. Wang serves as an Associate Editor for the IEEE Transactions on Power Electronics and the IEEE Journal of Emerging and Selected Topics in Power Electronics (J-ESTPE).

 

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