Review of Coupled Magnetic Resonance System (CMRS)

In this chapter, the well???known coupled magnetic resonance system (CMRS) is explained, stating that it is nothing but new and is a sort of conventional inductive power transfer system (IPTS). There are three major magnetic couplings between coils in CMRS: source???transmitter (Tx), Tx???receiver (Rx), and Rx???load couplings, respectively. Except for Tx???Rx coupling, other couplings do not directly contribute to wireless power transfer. Hence, this miscellaneous coupling can be replaced with a lumped transformer with a ferrite core. Because there is only a Tx???Rx coupling, the CMRS becomes compact in size and robust to ambient changes. Moreover, the design of CMRS is drastically simplified without complicated multiresonance tunings due to a small magnetic flux linkage from the source coil or the load coil.Coreless coils are used for Tx and Rx coils to examine the characteristics of CMRS with lumped transformers. A detailed static analysis on the explicit circuit model of the proposed CMRS and design procedures are fully established. Experiments for 1 W and 10 W prototype CMRSs with a class???E inverter at the switching frequency of 500 kHz, where the quality factors are less than 100, verified the usefulness of the proposed model, achieving 80% of the maximum Tx coil???to???load efficiency. It is concluded that the conventional CMRS, in general, is just a special form of IPTS where the quality factor is extremely high with coreless Tx and Rx coils.This chapter is based on two papers, one by B.H. Choi, E.S. Lee, J. Huh, and C.T. Rim, ???Lumped impedance transformers for compact and robust coupled magnetic resonance systems,??? IEEE Trans. on Power Electronics , vol. 30, no. 11, pp. 6046???6056, November 2015 and the other by J. Huh, W.Y. Lee, S.Y. Choi, G.H. Cho, and C.T. Rim, ???Frequency???domain circuit model and analysis of coupled magnetic resonance systems,??? Journal of Power El ectronics , vol. 13, no. 2, pp. 275???286, March 2013.

[1]  Young-Jin Park,et al.  Correction to “Efficiency Analysis of Magnetic Resonance Wireless Power Transfer With Intermediate Resonant Coil” , 2011 .

[2]  Songcheol Hong,et al.  A Study on Magnetic Field Repeater in Wireless Power Transfer , 2013, IEEE Transactions on Industrial Electronics.

[3]  Sangwook Nam,et al.  Investigation of Adaptive Matching Methods for Near-Field Wireless Power Transfer , 2011, IEEE Transactions on Antennas and Propagation.

[4]  Y. Hori,et al.  Basic study of improving efficiency of wireless power transfer via magnetic resonance coupling based on impedance matching , 2010, 2010 IEEE International Symposium on Industrial Electronics.

[5]  Hao Leo Li,et al.  A Direct AC–AC Converter for Inductive Power-Transfer Systems , 2012, IEEE Transactions on Power Electronics.

[6]  Chun T. Rim,et al.  7m-off-long-distance extremely loosely coupled inductive power transfer systems using dipole coils , 2014, 2014 IEEE Energy Conversion Congress and Exposition (ECCE).

[7]  Grant Covic,et al.  A Unity-Power-Factor IPT Pickup for High-Power Applications , 2010, IEEE Transactions on Industrial Electronics.

[8]  John Boys,et al.  An AC processing pickup for IPT systems , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[9]  Chun T. Rim,et al.  A Novel Source-Side Monitored Capacitive Power Transfer System for Contactless Mobile Charger Using Class-E Converter , 2014, 2014 IEEE 79th Vehicular Technology Conference (VTC Spring).

[10]  Eko Adhi Setiawan,et al.  Analysis of the effect of nickel electroplating layer addition on receiver coil of wireless power transfer system , 2011, TENCON 2011 - 2011 IEEE Region 10 Conference.

[11]  Franklin Bien,et al.  Efficiency improvement for magnetic resonance based wireless power transfer with axial-misalignment , 2012 .

[12]  P. Glenn Gulak,et al.  Maximum Achievable Efficiency in Near-Field Coupled Power-Transfer Systems , 2012, IEEE Transactions on Biomedical Circuits and Systems.

[13]  Maysam Ghovanloo,et al.  The Circuit Theory Behind Coupled-Mode Magnetic Resonance-Based Wireless Power Transmission , 2012, IEEE Transactions on Circuits and Systems I: Regular Papers.

[14]  J. Faria,et al.  Poynting Vector Flow Analysis for Contactless Energy Transfer in Magnetic Systems , 2012, IEEE Transactions on Power Electronics.

[15]  Shahriar Mirabbasi,et al.  Design and Optimization of Resonance-Based Efficient Wireless Power Delivery Systems for Biomedical Implants , 2011, IEEE Transactions on Biomedical Circuits and Systems.

[16]  J. Huh,et al.  Narrow-Width Inductive Power Transfer System for Online Electrical Vehicles , 2011, IEEE Transactions on Power Electronics.

[17]  No Sokal,et al.  CLASS-E - NEW CLASS OF HIGH-EFFICIENCY TUNED SINGLE-ENDED SWITCHING POWER AMPLIFIERS , 1975 .

[18]  W. X. Zhong,et al.  Effects of Magnetic Coupling of Nonadjacent Resonators on Wireless Power Domino-Resonator Systems , 2012, IEEE Transactions on Power Electronics.

[19]  T. Mizuno,et al.  Improvement in Efficiency of Wireless Power Transfer of Magnetic Resonant Coupling Using Magnetoplated Wire , 2011, IEEE Transactions on Magnetics.

[20]  Jenshan Lin,et al.  Design and Test of a High-Power High-Efficiency Loosely Coupled Planar Wireless Power Transfer System , 2009, IEEE Transactions on Industrial Electronics.

[21]  M. Soljačić,et al.  Wireless Power Transfer via Strongly Coupled Magnetic Resonances , 2007, Science.

[22]  Jong-Moo Lee,et al.  Circuit-Model-Based Analysis of a Wireless Energy-Transfer System via Coupled Magnetic Resonances , 2011, IEEE Transactions on Industrial Electronics.

[23]  Jenshan Lin,et al.  High efficiency midrange wireless power transfer system , 2011, 2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications.

[24]  Takehiro Imura,et al.  Maximizing Air Gap and Efficiency of Magnetic Resonant Coupling for Wireless Power Transfer Using Equivalent Circuit and Neumann Formula , 2011, IEEE Transactions on Industrial Electronics.

[25]  Anthony Grbic,et al.  A Power Link Study of Wireless Non-Radiative Power Transfer Systems Using Resonant Shielded Loops , 2012, IEEE Transactions on Circuits and Systems I: Regular Papers.

[26]  Y. Neba,et al.  Model for a Three-Phase Contactless Power Transfer System , 2011, IEEE Transactions on Power Electronics.

[27]  Frederick H. Raab,et al.  Idealized operation of the class E tuned power amplifier , 1977 .

[28]  John T Boys,et al.  A Series-Tuned Inductive-Power-Transfer Pickup With a Controllable AC-Voltage Output , 2011, IEEE Transactions on Power Electronics.

[29]  Alanson P. Sample,et al.  Analysis , Experimental Results , and Range Adaptation of Magnetically Coupled Resonators for Wireless Power Transfer , 2010 .

[30]  Xun Liu,et al.  A Novel Single-Layer Winding Array and Receiver Coil Structure for Contactless Battery Charging Systems With Free-Positioning and Localized Charging Features , 2011, IEEE Transactions on Industrial Electronics.

[31]  S.C. Goldstein,et al.  Magnetic Resonant Coupling As a Potential Means for Wireless Power Transfer to Multiple Small Receivers , 2009, IEEE Transactions on Power Electronics.

[32]  J. T. Boys,et al.  Design and Optimization of Circular Magnetic Structures for Lumped Inductive Power Transfer Systems , 2011, IEEE Transactions on Power Electronics.

[33]  Grant Covic,et al.  Multiphase Pickups for Large Lateral Tolerance Contactless Power-Transfer Systems , 2010, IEEE Transactions on Industrial Electronics.