Title :
Two- and Three-Dimensional Omnidirectional Wireless Power Transfer
Author :
Wai Man Ng ; Cheng Zhang ; Deyan Lin ; Hui, Shu Yuen Ron
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
Nonidentical current control methods for 2- and 3-D omnidirectional wireless power systems are described. The omnidirectional power transmitter enables ac magnetic flux to flow in all directions and coil receivers to pick up energy in any position in the proximity of the transmitter. It can be applied to wireless charging systems for low-power devices such as radio-frequency identification devices and sensors. Practical results on 2-D and 3-D systems have confirmed the omnidirectional power transfer capability.
Keywords :
electric current control; inductive power transmission; transmitters; 2-D omnidirectional wireless power systems; 3-D omnidirectional wireless power systems; ac magnetic flux; coil receivers; nonidentical current control methods; omnidirectional power transfer capability; omnidirectional power transmitter; radio-frequency identification devices; sensors; three-dimensional omnidirectional wireless power transfer; two-dimensional omnidirectional wireless power transfer; wireless charging systems; Coils; Magnetic fields; Receivers; Transmitters; Vectors; Wireless communication; Wireless sensor networks; Inductive power; magnetic resonance; wireless power transfer;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2300866
