DC arc fault introduces major safety concerns in a wide variety of power electronic applications. However, the randomness and instability of dc arc makes it difficult to be detected. In this talk, an experimental system to study the characteristics of series dc arc is introduced. Test results for wide current and voltage ranges (6 A to 30 A, 75 V to 300 V) are analyzed based on gap length, current, etc. Dc arc models for both dc component and high frequency noise component are explained based on experimental results. To end the talk, the impact of dc arc faults at various locations of a typical dc micro grid are presented. It is found that conventional current and voltage control strategies can have adverse impact to dc arc faults and dc arc faults at certain locations can be very difficult to be detected with existing dc micro grid protection strategies.

Biography

Jin Wang received a B.S. degree from Xi’an Jiao tong University, in 1998, an M.S. degree from Wuhan University, in 2001, and a Ph.D. from Michigan State University, East Lansing, in 2005, all in electrical engineering.

From Sept., 2005 to Aug. 2007, he worked at the Ford Motor Company as a Core Power Electronics Engineer and contributed to the traction drive design of the Ford Fusion Hybrid.  He joined the Department of Electrical and Computer Engineering at The Ohio State University as an assistant professor in September 2007 and was promoted to associate professor in September 2013. His research interests include wide band gap power devices and their applications, high-voltage and high-power converter/inverters, integration of renewable energy sources, and electrification of transportation. 

      Dr. Wang received multiple teaching and research awards including the IEEE Power Electronics Society Richard M. Bass Young Engineer Award and the National Science Foundation’s CAREER Award, both in 2011; Ralph L. Boyer Award for Excellence in Undergraduate Teaching Innovation from the College of Engineering at The Ohio State University in 2012, and the Lumley Research Award of the College of Engineering at The Ohio State University in 2013. Dr. Wang has over 100 peer-reviewed journal and conference publications and three patents. Dr. Wang had been an Associate Editor for IEEE Transactions on Industry Applications from 2008 to 2014.He initiated and served as the General Chair for the 1st IEEE Workshop on Wide Bandgap Power Devices and Applications in 2013. Currently, Dr. Wang serves as the General Chair for IEEE Future Energy Challenge 2016, and an Associate Editor for IET Renewable Power Generation journal, IEEE Transactions on Power Electronics and IEEE Journal of Emerging and Selected Topics in Power Electronics (J-ESTPE).

   报告时间：2016年1月25日上午9:30-11:00

   地点：教5楼 C103