Class-E LCCL for capacitive power transfer system

This paper presented the design of a capacitive power transfer (CPT) system by implementing a Class-E inverter due to its high efficiency, which in theory can reach close to 100% performance. However, the Class-E inverter is highly sensitive to its circuit parameters under the scenario of having small capacitance at the coupling plate. As a solution, an additional capacitor can be integrated into the Class-E inverter for increased coupling capacitance for a better performance. Both simulation and experimental investigations were carried out to verify the high efficiency CPT system based on Class-E inverter with additional capacitor. The outcome of the investigation exhibited 96% of overall DC-DC power transfer efficiency with 0.97 W output at 1MHz operating frequency.

[1]  M. P. Theodoridis,et al.  Effective Capacitive Power Transfer , 2012, IEEE Transactions on Power Electronics.

[2]  Daniel C. Ludois,et al.  Wireless electric vehicle charging via capacitive power transfer through a conformal bumper , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[3]  Seth Sanders,et al.  Capacitive power transfer for contactless charging , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[4]  Justin K. Reed,et al.  Capacitive power transfer for slip ring replacement in wound field synchronous machines , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[5]  Nikolay Madzharov,et al.  Inductive High Power Transfer Technologies for Electric Vehicles , 2014 .

[6]  Nathan O. Sokal,et al.  Class of High-Efficiency Tuned Switching Power Amplifiers , 2009 .

[7]  Raimo Sepponen,et al.  A Biosignal Instrumentation System Using Capacitive Coupling for Power and Signal Isolation , 2007, IEEE Transactions on Biomedical Engineering.

[8]  Aiguo Patrick Hu,et al.  Coupling study of a rotary Capacitive Power Transfer system , 2009, 2009 IEEE International Conference on Industrial Technology.

[9]  A.P. Hu,et al.  A Wireless Battery-less Computer Mouse with Super Capacitor Energy Buffer , 2007, 2007 2nd IEEE Conference on Industrial Electronics and Applications.

[10]  Minkyu Je,et al.  Electric near-field coupling for wireless power transfer in biomedical applications , 2013, 2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO).

[11]  A. Eroglu,et al.  New topology for Class E amplifiers , 2007 .

[12]  Marian K. Kazimierczuk,et al.  Exact analysis of class E tuned power amplifier at any Q and switch duty cycle , 1987 .