Search 

Home » Keynote addresses

Dr. Kaushik Rajashekara
Chief Technologist,
Electric Power & Control Systems (EPACS),
Rolls-Royce Corporation, Indianapolis, USA

Kaushik Rajashekara received his B.Eng., M.Eng, and Ph.D. degrees from the Indian Institute of Science, Bangalore, India. In July 1989, he joined Delphi Corporation, which was a division of General Motors. In Delphi and GM, he held various technical and managerial positions, and has been the Technical Fellow and Chief Scientist for Propulsion, Fuel Cell & Advanced Energy Systems for electric and hybrid vehicles. In May 2006, he joined Rolls-Royce Corporation, Indianapolis as a Chief Technologist working on technologies related to More Electric Engine system architectures and electric power systems for the use of gas turbines in Aero, Marine, Defense, and Energy applications.
Dr. Rajashekara has published more than 100 published papers and has 27 patents on power conversion related to Electric, Hybrid, and Fuel cell vehicles. He has given more than 100 invited presentations in various international conferences and local IEEE chapters. He was awarded the 2009 IEEE Industry Applications Society Outstanding Achievement award and 2006 Gerald Kliman Innovator Award for contributions to the advancement of power conversion technologies. He is a Fellow of IEEE and Fellow of SAE. He was inducted into the Delphi Innovation Hall of Fame in 1999. He was the Technical Program Chairman of the IEEE Workshop on Power Electronics in Transportation. He was also the Chairman of the Power Electronics Devices and Components committee of the IEEE Industry Applications Society (1999-2000). He has been elected as Distinguished Lecturer (2006-2007) of the IEEE Industry Applications Society. He is an Advisory Board member of the Power Conversion & Intelligent Motion (PCIM-Europe) conference. He is an Adjunct Professor in the Purdue School of Engineering and Technology, Indianapolis


Electric Machines and Power Electronics for More Electric Aircraft

Abstract:

The More Electric Aircraft (MEA) concept is being widely recognized as the future technology for the aerospace industry. There is significant interest from the airframers, suppliers, and the military to convert most (if not all) of the pneumatic and hydraulic systems in the aircraft to electric. MEA technologies are continually evolving, and there is lot of opportunity for improvement as systems continue to be refined and enhanced. This has been further reinforced by the successful application of Airbus 380 in commercial flights and testing of Boeing 787. The MEA architecture offers significant overall system benefits in reliability, improving fuel efficiency, and reducing emissions. On the other hand, MEA concept imposes increasing demands on the electrical power generation, conversion, and distribution. In addition, it has to be safe, reliable, efficient, and fault tolerant.
This presentation reviews the architectures and advantages of More Electric Aircraft powered by gas turbine engines which have embedded electric machines attached to both the low pressure and high pressure shafts, in place of today's systems that use complex gearing to permit fitting of generators (plus engine starter, oil pumps, hydraulic pumps and fuel pump) on the outside of the engine. The types of electric machines, their key features, and the required power electronics for high reliability and fault tolerant operation will be discussed. The problems associated with high frequency switching and cooling aspects; and the use of AC vs. DC for power distribution: advantages and limitations will also be presented. The use of superconducting machines as proposed by NASA for their N+3 distributed propulsion system will be briefly reviewed.

Conference Calls
Conference poster
Download conference
poster (A3 size, PDF
format 2,83MB) :

© OPTIM 2012            Home   Committees   Programme   Author's Kit   Presentations   Registration   Venue   Contact            WM pam 2012