IEEE Power Electronics Transaction 1st Place Prize Paper Award

Hui, S.Y. (Recipient) & LIU, Xun (Recipient)

Department of Electrical Engineering

Prize: Other distinction

Awarded date	2008
Degree of recognition	International
Granting Organisations	IEEE Power Electronics Society (PELS)

Awarded at event

Event title	2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Location	San Jose, CA, United StatesShow on map
Period	20 Sept 2009 → 24 Sept 2009

Documents & Links

Planar contactless battery charging platform is an emerging technology that has the potential of unifying the charging protocols of portable consumer electronic products. In this paper, a new hybrid structure which consists of a coil and a spiral winding is proposed for improving the uniform magnetic field distribution over the charging surface. An analysis into an optimal design of the number of turns and the dimension of the spiral winding is presented for a given concentrated coil. The uniform magnetic field distribution of the designed prototype is measured by an electromagnetic compatibility scanner and by an energy-receiving coil. Based on circuit modeling and analysis, the inverter circuit topology and particularly the resonant compensation tank is designed for maximizing power transfer for multiload applications. A design procedure is proposed and verified by the experiments. An efficiency of about 80% has been achieved for the coupled structures when four loads are charged on the platform simultaneously.