Title :
An adaptive magnetically coupled wireless power transmission system
Author :
Hadadtehrani, Parinaz ; Kamalinejad, Pouya ; Molavi, Reza ; Mirabbasi, Shahriar
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of British Columbia, Vancouver, BC, Canada
Abstract :
An adaptive control mechanism to improve the efficiency of magnetically coupled resonators (MCRs) used in wireless power transmission is presented. To minimize the degradation in power transfer efficiency, the proposed system dynamically adjusts the capacitance of MCRs as the distance between the transmitter (TX) and receiver (RX) coils changes. The control unit operates in a self-sufficient manner through rectifying a portion of the AC signal present on TX and RX coils. A proof-of-concept circuit operating at 13.56 MHz is designed in a 0.13 μm CMOS technology and simulation results confirm the validity of the proposed scheme.
Keywords :
adaptive control; radiofrequency power transmission; resonators; CMOS technology; MCR; RX coils; TX coils; adaptive control mechanism; adaptive magnetically coupled wireless power transmission system; magnetically coupled resonators; power transfer efficiency; receiver coils; transmitter coils; Capacitors; Coils; Couplings; Magnetic resonance; Tuning; Wireless communication; Wireless power transfer; adaptive tunning; magnetically coupled resonator;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International
Conference_Location :
Grenoble
DOI :
10.1109/NEWCAS.2015.7181982
