Analysis and experiment on harmonic current distortion in wireless power transfer system using a diode rectifier

Wireless power transfer (WPT) via magnetic resonance coupling provides highly efficient mid-range transmission. Its transmitting power can be controlled using a diode rectifier and a DC-DC converter on the secondary side. Previous research replaces the load and the rectifier circuit with an equivalent load resistance or a fundamental harmonic sine wave voltage source to analyze the charging power of WPT. In such a case however, the effect caused by the rectifier circuit becomes unclear because the harmonic components are neglected. As a result, the theoretical charging power and its true value have an error due to the harmonic current distortion. In this paper, a novel WPT circuit model is proposed for the analysis of the harmonic current distortion on the secondary side. The proposed model uses the secondary voltage as the input variable of transfer functions and makes clear the effect caused by the rectifier circuit. Experiments demonstrate that the harmonic current distortion is increased with the increase in the secondary voltage. These results accord with the analysis using the proposed model and verify the effectiveness of the proposed model.

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

[2]  Takehiro Imura,et al.  Flexibility of Contactless Power Transfer using Magnetic Resonance Coupling to Air Gap and Misalignment for EV , 2009 .

[3]  Chi K. Tse,et al.  A study of sectional tracks in roadway inductive power transfer system , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[4]  Takehiro Imura,et al.  Fundamental research of power conversion circuit control for wireless In-Wheel Motor using magnetic resonance coupling , 2014, IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society.

[5]  Junnosuke Haruna,et al.  Experimental discussion on inductive type contactless power transfer system with boost or buck converter connected to rectifier , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[6]  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.

[7]  Chunting Chris Mi,et al.  Wireless Power Transfer for Electric Vehicle Applications , 2015, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[8]  A. Sayem.  Wireless Power Transfer via Strongly Coupled Magnetic Resonance , 2015 .

[9]  John G. Hayes,et al.  Wide-load-range resonant converter supplying the SAE J-1773 electric vehicle inductive charging interface , 1999 .

[10]  Dong-Ho Cho,et al.  Design and Implementation of Shaped Magnetic-Resonance-Based Wireless Power Transfer System for Roadway-Powered Moving Electric Vehicles , 2014, IEEE Transactions on Industrial Electronics.

[11]  Y. Hori,et al.  New characteristics analysis considering transmission distance and load variation in wireless power transfer via magnetic resonant coupling , 2012, Intelec 2012.

[12]  Takehiro Imura,et al.  Study on maximize efficiency by secondary side control using DC-DC converter in wireless power transfer via magnetic resonant coupling , 2013, 2013 World Electric Vehicle Symposium and Exhibition (EVS27).

[13]  Yoichi Hori.  Future vehicle driven by electricity and control-research on four wheel motored "UOT Electric March II" , 2002, 7th International Workshop on Advanced Motion Control. Proceedings (Cat. No.02TH8623).

[14]  Katsuhiro Hata,et al.  Dynamic Wireless Power Transfer System for Electric Vehicle to Simplify Ground Facilities - Power Control Based on Vehicle-side Information - , 2015 .

[15]  Takehiro Imura,et al.  Basic study on reduction of reflected power using DC/DC converters in wireless power transfer system via magnetic resonant coupling , 2011, 2011 IEEE 33rd International Telecommunications Energy Conference (INTELEC).

[16]  Katsuhiro Hata,et al.  Maximum efficiency control of wireless power transfer via magnetic resonant coupling considering dynamics of DC-DC converter for moving electric vehicles , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[17]  Takehiro Imura,et al.  Wireless charging power control for HESS through receiver side voltage control , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[18]  Lixin Tang,et al.  Single-phase active boost rectifier with power factor correction for Wireless Power Transfer applications , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[19]  H. H. Wu,et al.  A 90 percent efficient 5kW inductive charger for EVs , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[20]  Grant Covic,et al.  Interphase Mutual Inductance in Polyphase Inductive Power Transfer Systems , 2009, IEEE Transactions on Industrial Electronics.

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