Optimal design of high frequency H-bridge inverter for wireless power transfer systems in EV applications

With the emergence of Wireless Power Transfer (WPT) systems in electric vehicle (EV) applications, variety of power electronics converters topologies are implemented. The proper converter design is crucial in these application to be able to handle the high power and frequency operation. This paper presents an optimum design of 40 kHz single-phase H-bridge resonance inverter for wireless EV's charging system. The power and signal components selection and design are discussed in details. Also, the printed circuit board (PCB) layout design is optimized for reducing the electromagnetic interference (EMI) to comply the standard level. Moreover, snubber circuit is designed and added to each inverter leg to minimize the ringing issue. The proposed design includes voltage and current protection for both the DC and AC sides. Both the power switched and the driving circuits are embedded in one PCB. The proposed design is tested under different control and operating conditions and compared with a random design. Finally, the proposed inverter is introduced in a bidirectional inductive wireless power transfer (BIWPT) system prototype and examined by means of simulation and experimental tests. The results shows effective improvements for the proposed design.

[1]  Chwei-Sen Wang,et al.  Investigating an LCL load resonant inverter for inductive power transfer applications , 2004, IEEE Transactions on Power Electronics.

[2]  Yue Sun,et al.  Research of LCL Resonant Inverter in Wireless Power Transfer System , 2006, 2006 International Conference on Power System Technology.

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

[4]  Osama Mohammed,et al.  Power Flow Modeling of Wireless Power Transfer for EVs Charging and Discharging in V2G Applications , 2015, 2015 IEEE Vehicle Power and Propulsion Conference (VPPC).

[5]  O. A. Mohammed,et al.  Physics-based FE model and analytical verification of bi-directional inductive wireless power transfer system , 2016, 2016 IEEE/ACES International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics (ACES).

[6]  Sun Yue,et al.  Improved LCL resonant network for Inductive Power Transfer system , 2015, 2015 IEEE PELS Workshop on Emerging Technologies: Wireless Power (2015 WoW).

[7]  R.W. De Doncker,et al.  Design of an IGBT-based LCL-resonant inverter for high-frequency induction heating , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[8]  Saad Mekhilef,et al.  A review on high frequency resonant inverter technologies for wireless power transfer using magnetic resonance coupling , 2014, 2014 IEEE Conference on Energy Conversion (CENCON).

[9]  Gilyong Choi,et al.  100kHz IGBT inverter use of LCL topology for high power induction heating , 2011, 8th International Conference on Power Electronics - ECCE Asia.