2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
2/27/2018 | 8:55 AM - 9:45 AM | In-motion Capacitive Wireless Power Transfer for Electric Vehicles | Summit A
In-motion Capacitive Wireless Power Transfer for Electric Vehicles
Currently most wireless power transfer (WPT) systems for electric vehicle (EV) charging are inductive. These inductive WPT systems typically require ferrites for magnetic flux guidance and shielding, making them expensive. Furthermore, to limit high frequency losses in the ferrite materials, the operating frequencies of these systems are limited to under a hundred kilohertz, resulting in large size. An attractive alternative to inductive WPT is capacitive WPT, which utilizes electric-field-coupled metal plates for power transfer and does not require ferrites. This can greatly reduce system size, weight and cost, and enable easier installation of the WPT system in the roadway. However, achieving multi-kilowatt-levels of power transfer across large air-gaps while in motion using capacitive WPT presents unique challenges. This presentation will discuss these challenges and the opportunities in capacitive WPT systems suitable for powering EVs from the roadway.
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Presenters/Authors
Khurram Afridi
(), University of Colorado Boulder, khurram.afridi@colorado.edu;
Khurram Afridi is an Assistant Professor of Electrical, Computer and Energy Engineering and the Goh Faculty Fellow at the University of Colorado (CU) Boulder. He received the BS degree in electrical engineering from Caltech, and SM and PhD degrees in electrical engineering and computer science from MIT. His research interests are in power electronics and wireless power transfer. Prior to joining CU Boulder he was a visiting faculty at MIT's EECS Department and the Chief Operating Officer and Chief Technology Officer of Techlogix. He has also worked for JPL, Lutron, Philips, and Schlumberger. From 2004 to 2008 he led the development of LUMS School of Science and Engineering, and was the Technical Program Committee chair for the IEEE Wireless Power Transfer Conference in 2015. He has received Caltech’s Carnation Merit Award, the BMW Scientific Award, and the NSF CAREER Award. He is co-author of four IEEE prize papers.
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