An embeddable transmitter coil applied to electric vehicles powered by IPT system

Transmitter coil is one of the most critical part in an inductive power transfer (IPT) system for electric vehicles (EVs) application. For the traditional transmitter coils, due to the switch process between the adjacent coils, two serious problems of pick up voltage fluctuation and high power loss on the windings affect the stability and efficiency of the wireless EV charging. In order to solve these problems, this paper proposes a novel segmented transmitter coil for wireless power transfer on EV. A mutual inductance model is established based on the Neumann's Formula, moreover, a key parameters selection method and turns ratio optimization method of the proposed segmented transmitter coils are also presented to keep the mutual inductance in a constant level while the transmitter coils switching one by one. Both of the simulations and experimental results verify the validity and effectiveness of the proposed transmitter coils and its key parameters selection method.

[1]  N. Gomesh,et al.  Low wireless power transfer using Inductive Coupling for mobile phone charger , 2014, 2014 IEEE 8th International Power Engineering and Optimization Conference (PEOCO2014).

[2]  André Faaij,et al.  Performance of batteries for electric vehicles on short and longer term , 2012 .

[3]  S. Y. Choi,et al.  Asymmetric Coil Sets for Wireless Stationary EV Chargers With Large Lateral Tolerance by Dominant Field Analysis , 2014, IEEE Transactions on Power Electronics.

[4]  He Zhengyo.  Dynamic Compensation Strategy of Inductive Power Transfer System with Inductive-Resistive Load , 2014 .

[5]  Xiao Lv,et al.  Magnetic coupler design procedure for IPT system and its application to EVs' wireless charging , 2015 .

[6]  G. Covic,et al.  A New Concept: Asymmetrical Pick-Ups for Inductively Coupled Power Transfer Monorail Systems , 2006, IEEE Transactions on Magnetics.

[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]  Sungwoo Lee,et al.  High performance inductive power transfer system with narrow rail width for On-Line Electric Vehicles , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[9]  Gianluca Lazzi,et al.  Increasing wireless power transfer efficiency on implantable biomedical devices using ferrite based negative permeability metamaterial design , 2014, 2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).

[10]  Joungho Kim,et al.  Magnetic field design for high efficient and low EMF wireless power transfer in on-line electric vehicle , 2011, Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP).

[11]  Yuhua Cheng,et al.  A New Analytical Calculation of the Mutual Inductance of the Coaxial Spiral Rectangular Coils , 2014, IEEE Transactions on Magnetics.

[12]  Kazuhiro Takeda,et al.  Design and evaluation of a wireless power transfer system with road embedded transmitter coils for dynamic charging of electric vehicles , 2013, 2013 World Electric Vehicle Symposium and Exhibition (EVS27).

[13]  Yasuhiro Anraku,et al.  Development of Litz wire for deflection yoke coil with excellent convergence characteristics , 1997, Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference.

[14]  Grant Covic,et al.  Development of a Single-Sided Flux Magnetic Coupler for Electric Vehicle IPT Charging Systems , 2013, IEEE Transactions on Industrial Electronics.

[15]  John T. Boys,et al.  Stability and control of inductively coupled power transfer systems , 2000 .

[16]  Grant A. Covic,et al.  Determining the Physical Size of Inductive Couplers for IPT EV Systems , 2014 .

[17]  Omer C. Onar,et al.  A SiC MOSFET based inverter for wireless power transfer applications , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[18]  José Francisco Sanz Osorio,et al.  Optimal Design of ICPT Systems Applied to Electric Vehicle Battery Charge , 2009, IEEE Transactions on Industrial Electronics.

[19]  J. W. Kolar,et al.  Accurate finite-element modeling and experimental verification of inductive power transfer coil design , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[20]  Grant Covic,et al.  Power transfer capability and bifurcation phenomena of loosely coupled inductive power transfer systems , 2004, IEEE Transactions on Industrial Electronics.

[21]  Matthew N. O. Sadiku,et al.  A further introduction to finite element analysis of electromagnetic problems , 1989 .

[22]  L.S. Ng,et al.  Inductive power coupling for an electric highway system , 1978, 28th IEEE Vehicular Technology Conference.

[23]  J. Huh,et al.  New Cross-Segmented Power Supply Rails for Roadway-Powered Electric Vehicles , 2013, IEEE Transactions on Power Electronics.