Development of resonant coil for kW-class wireless power transfer system

We have developed resonant coils for kW-class wireless power transfer systems used in industrial applications such as EV/PHEVs. The characteristics requested for such coils are small size, lightweight and low loss. In this study we have simulated two test coils that have different arrangement of ferrite cores. Both coils have outline size of 50 cm square and thickness of about 3 cm. The proposed core arrangement reduced the core loss by 38% compared with the conventional type.

[1]  Takehiro Imura,et al.  Basic experimental study on helical antennas of wireless power transfer for Electric Vehicles by using magnetic resonant couplings , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[2]  Y. Nagatsuka,et al.  Compact contactless power transfer system for electric vehicles , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

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

[4]  Kobayashi Shigeru,et al.  DEVELOPMENT OF KW CLASS WIRELESS POWER TRANSMISSION SYSTEM FOR EV USING MAGNETIC RESONANT METHOD , 2011 .

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

[6]  Yasuyoshi Kaneko,et al.  Contactless charging systems , 2011, 2011 IEEE 33rd International Telecommunications Energy Conference (INTELEC).