Evaluation of maximum system efficiency and maximum output power in two-coil wireless power transfer system by using modeling and experimental results

Maximum output power and maximum system efficiency are the two important design factors in a wireless power transfer (WPT) system. This paper reviews the model used for evaluation of maximum output power and maximum system efficiency in a two-coil WPT system under different distances (DIS), different operation frequencies as well as different load conditions. By obtaining theoretical relationships of output power and system efficiency, a designer is able to select design parameters for WPT system optimization. A proof of experimental prototype is built in the laboratory to evaluate the system efficiency and output power. It is shown that the measured results closely agree with the theoretical results under different operating conditions.

[1]  Zhigang Dang,et al.  Reconfigurable Magnetic Resonance-Coupled Wireless Power Transfer System , 2015, IEEE Transactions on Power Electronics.

[2]  Grant Covic,et al.  Design considerations for a contactless electric vehicle battery charger , 2005, IEEE Transactions on Industrial Electronics.

[3]  Omer C. Onar,et al.  Oak Ridge National Laboratory Wireless Power Transfer Development for Sustainable Campus Initiative , 2013, 2013 IEEE Transportation Electrification Conference and Expo (ITEC).

[4]  Jaber A. Abu Qahouq,et al.  Steady-state analysis of the inductor current behavior and requirements for the control of a single-inductor multiple-input single-output DC-DC power converter , 2017, 2017 IEEE Applied Power Electronics Conference and Exposition (APEC).

[5]  Jaber A. Abu-Qahouq,et al.  Energy Sharing Control Scheme for State-of-Charge Balancing of Distributed Battery Energy Storage System , 2015, IEEE Transactions on Industrial Electronics.

[6]  Domingo Biel Solé,et al.  Energy-balance control of PV cascaded multilevel grid-connected inverters for phase-shifted and level-shifted pulse-width modulations , 2012 .

[7]  Chulwoo Kim,et al.  Adaptive frequency with power-level tracking system for efficient magnetic resonance wireless power transfer , 2012 .

[8]  Zhigang Dang,et al.  Dynamic efficiency tracking controller for reconfigurable four-coil wireless power transfer system , 2016, 2016 IEEE Applied Power Electronics Conference and Exposition (APEC).

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

[10]  Bo Zhang,et al.  Frequency Splitting Phenomena of Magnetic Resonant Coupling Wireless Power Transfer , 2014, IEEE Transactions on Magnetics.

[11]  U. Madawala,et al.  A Bidirectional Inductive Power Interface for Electric Vehicles in V2G Systems , 2011, IEEE Transactions on Industrial Electronics.

[12]  Jaber A. Abu-Qahouq,et al.  An Online Battery Impedance Measurement Method Using DC–DC Power Converter Control , 2014, IEEE Transactions on Industrial Electronics.

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

[14]  Jaber A. Abu Qahouq,et al.  Input Voltage Ripple-Based Sensorless Current Sharing Autotuning Controller for Multiphase DC–DC Converters , 2016, IEEE Transactions on Industry Applications.

[15]  P.T. Nguyen,et al.  Power-factor-corrected single-stage inductive charger for electric-vehicle batteries , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[16]  Jongsun Park,et al.  An Adaptive Impedance-Matching Network Based on a Novel Capacitor Matrix for Wireless Power Transfer , 2014, IEEE Transactions on Power Electronics.

[17]  Zhengming Zhao,et al.  Selective Wireless Power Transfer to Multiple Loads Using Receivers of Different Resonant Frequencies , 2015, IEEE Transactions on Power Electronics.

[18]  Wenxing Zhong,et al.  A Critical Review of Recent Progress in Mid-Range Wireless Power Transfer , 2014, IEEE Transactions on Power Electronics.

[19]  Zhigang Dang,et al.  Permanent-Magnet Coupled Power Inductor for Multiphase DC–DC Power Converters , 2017, IEEE Transactions on Industrial Electronics.

[20]  マチアス ウェクリン,et al.  Apparatus for transmitting electrical energy inductively , 2003 .