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http://dx.doi.org/10.5370/JEET.2018.13.1.250

Class-E Power Amplifier with Minimal Standby Power for Wireless Power Transfer System  

Kim, Bong-Chul (Dept. of System Engineering and Development, Power Supply Technology Team, National Fusion Research Institute)
Lee, Byoung-Hee (Dept. of Electronics and Control Engineering, Hanbat National University)
Publication Information
Journal of Electrical Engineering and Technology / v.13, no.1, 2018 , pp. 250-255 More about this Journal
Abstract
This paper presents a method for minimizing standby power consumption in wireless power transfer (WPT) system via magnetic resonance coupling (MRC) that operates at 6.78 MHz. The proposed circuit controls the required capacitance according to operational condition in order to reduce standby power consumption. Based on an impedance characteristic of the class-E power amplifier, operational principles of the proposed circuit are analyzed. Moreover, to verify the effectiveness of the proposed class-E power amplifier, an 8 W prototype for WPT system is implemented. The measured input power of the proposed class-E power amplifier at standby condition is reduced from 5.81 W to 3.53 W.
Keywords
Class-E power amplifier; Impedance matching; Magnetic resonance coupling (MRC); Standby power; Wireless power transfer (WPT);
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1 Mike Gikas, "Smartphones With the Best Battery Life," Consumer Reports, March 2016. [Online] Available:http://www.consumerreports.org/smartphones/smartphones-with-the-best-battery-life/
2 MarketsAndMarkets, "Wireless Power Transmission Market by Technology (Induction & Magnetic Resonance), Implementation, Receiver & Transmitter Application (Smartphones, Wearable Electronics, Electric Vehicles, & Furniture), and Region - Global Trend & Forecast to 2020," Reports, Jan. 2016.
3 Wireless Power Consortium (WPC) [Online] Available: https://www.wirelesspowerconsortium.com/
4 AirFuel [Online] Available: http://airfuel.org/
5 Huy Hoang, Seunggyu Lee, Youngsu Kim, Yunho Choi and Franklin Bien, "An Adaptive Technique to Improve Wireless Power Transfer for Consumer Electronics," IEEE Trans. Consumer Electronics, vol. 58, no. 2, pp. 327-332, May 2012.   DOI
6 Gary Hanington, Pin-Fan Chen, Peter M. Asbeck and Lawrence E. Larson, "High-Efficiency Power Amplifier Using Dynamic Power-Supply Voltage for CDMA Applications," IEEE Trans. Microwave Theory and Technique, vol. 47, no. 8, pp. 1471-1476, Aug. 1999.   DOI
7 Hyeonseok Hwang, Junil Moon, Bumsoo Lee, Chan- Hui Jeong and Soo-Won Kim, "An Analysis of Magnetic Resonance Coupling Effects on Wireless Power Transfer by Coil Inductance and Placement," IEEE Trans. Consumer Electronics, vol. 60, no. 2, pp. 203-209, May 2014.   DOI
8 Andre Kirs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher and Marin Soljacic, "Wireless Power Transfer via Strongly Coupled Magnetic Resonances," Science, vol. 317, Issue. 5834, pp. 83-86, July 2007.   DOI
9 Teck Chuan Beh, Masaki Kato, Takehiro Imura, Sehoon Oh and Yoichi Hori, "Automated Impedance Matching System for Robust Wireless Power Transfer via Magnetic Resonance Coupling," IEEE Trans. Industrial Electronics, vol. 60, no. 9, pp. 3689-3698, Sept. 2013.   DOI
10 Petteri Alinikula, Kevin Choi and Stephen I. Long, "Design of Class E Power Amplifier with Nonlinear Parasitic Output Capacitance," IEEE Trans. Circuits and Systems II, vol. 46, no. 2, pp. 114-119, Feb. 1999.   DOI
11 Andrea Mazzanti, Luca Larcher, Riccardo Brama and Francesco Svelto, "Analysis of Reliability and Power Efficiency in Cascade Class-E PAs," IEEE Journal of Solid-State Circuits, vol. 41, no. 5, pp. 1222-1229, May 2006.   DOI
12 Datasheet FDMC86116LZ. (2013). [Online] Available: http://www.onsemi.com/pub/Collateral/FDMC86116 LZ-D.pdf
13 Joaquin J. Casanova, Zhen Ning Low and Jenshan Lin, "Design and Optimization of a Class-E Amplifier for a Loosely Coupled Planar Wireless Power System," IEEE Trans. Circuits and Systems II, vol. 56, no. 11, pp.830-834, Nov. 2009.   DOI
14 Renato Negra and Werner Bachtold, "Lumped- Element Load-Network Design for Class-E Power Amplifiers," IEEE Trans. Microwave Theory and Techniques, vol. 54, no. 6, pp.2684-2690, Jun. 2006.   DOI
15 Chwei-Sen Wang, Oskar H. Stielau and Grant A, Covic, "Design Considerations for a Contactless Electric Vehicle Battery Charger," IEEE Trans. Industrial Electronics, vol. 52, no. 5, pp. 1308-1314, Oct. 2005.   DOI
16 Byoung-Hee Lee, Yeon-Woo Choi and Bong-Chul Kim, "Standby Power Reduction Method for Wireless Power Transfer System with Parallel Resonance Type Resonator," in Proceedings of IEEE WPTC 2016 Conference, Aveiro, Portugal, May 2016.
17 Jong-Ryul Yang, Hyoen-Chang Son and Young-Jin Park, "A CLASS E POWER AMPLIFIER WITH COUPLING COILS FOR A WIRELESS POWER TRANSFER SYSTEM," Progress In Electromagnetics Research C, vol. 35, pp. 13-22, 2013.   DOI