Electromagnetic Time Reversal and its Application to EMC
Time reversal has emerged as a very interesting technique with potential applications in various fields of engineering. It has received a great deal of attention in recent years, essentially in the field of acoustics, where it was first developed by Prof. Fink and his team in the 1990s. In the past decade, the technique has also been used in the field of electromagnetics and applied to various other areas of electrical and computer engineering. In particular, the technique has been successfully applied in the fields of electromagnetic compatibility (EMC) and power systems, leading to mature technologies in source-location identification with unprecedented performance compared to classical approaches. It is expected that the fields of application of electromagnetic time reversal (EMTR) will continue to grow in the near future.
This talk presents the theoretical basis of the electromagnetic time reversal. It starts with a discussion of the notion of time in physics and it goes on to present three approaches that can be used to effectively make a system go back in time, in the sense that it retraces the path it came from in the immediate past. The time reversal invariance of physics laws is then described with special attention given to the time reversal invariance of Maxwell’s equations. The concept of time reversal cavity, and the use of time reversal as a means of refocusing electromagnetic waves is then described. Finally, the application of Electromagnetic Time Reversal in lightning location and fault location in electrical networks is presented and discussed.
Refreshments will be served. OIQ (Quebec Order of Engineers) members may claim this event for continuing education hours provided that it is related to the member's professional activities as defined in: OIQ Règlement sur la formation continue article 6.
Date and Time
Location
Hosts
Registration
-
Add Event to Calendar
- McGill University
- 3480 Rue University
- Montreal, Quebec
- Canada H3A 2K6
- Building: McConnell Engineering Building
- Room Number: 603
- Starts 01 April 2019 04:22 PM UTC
- Ends 09 April 2019 04:22 PM UTC
- No Admission Charge
Speakers
Prof. Farhad Rachidi
Electromagnetic Time Reversal and its Application to EMC
Biography:
Farhad Rachidi (M’93–SM’02–F’10) received the M.S. degree in electrical engineering and the Ph.D. degree from the Swiss Federal Institute of Technology, Lausanne, Switzerland, in 1986 and 1991, respectively. He was with the Power Systems Laboratory, Swiss Federal Institute of Technology, until 1996. In 1997, he joined the Lightning Research Laboratory, University of Toronto, Toronto, ON, Canada. From 1998 to 1999, he was with Montena EMC, Rossens, Switzerland. He is currently a Titular Professor and the Head of the EMC Laboratory with the Swiss Federal Institute of Technology, Lausanne, Switzerland. He has authored or co-authored over 190 scientific papers published in peer-reviewed journals and over 400 papers presented at international conferences.
Dr. Rachidi is currently a member of the Advisory Board of the IEEE Transactions on Electromagnetic Compatibility and the President of the Swiss National Committee of the International Union of Radio Science. He has received numerous awards including the 2005 IEEE EMC Technical Achievement Award, the 2005 CIGRE Technical Committee Award, the 2006 Blondel Medal from the French Association of Electrical Engineering, Electronics, Information Technology and Communication (SEE), the 2016 Berger Award from the International Conference on Lightning Protection, the 2016 Best Paper Award of the IEEE Transactions on EMC, and the 2017 Motohisa Kanda Award for the most cited paper of the IEEE Transactions on EMC (2012-2016). In 2014, he was conferred the title of Honorary Professor of the Xi’an Jiaotong University in China. He served as the Vice-Chair of the European COST Action on the Physics of Lightning Flash and its Effects from 2005 to 2009, the Chairman of the 2008 European Electromagnetics International Symposium, the President of the International Conference on Lightning Protection from 2008 to 2014, the Editor-in-Chief of the Open Atmospheric Science Journal (2010-2012) and the Editor-in-Chief of the IEEE Transactions on Electromagnetic Compatibility from 2013 to 2015. He is a Fellow of the IEEE and of the SUMMA Foundation, and a member of the Swiss Academy of Natural Sciences.
Address:Swiss Federal Institute of Technology (EPFL), , Lausanne, Switzerland, Switzerland