Contactless power transfer system and method

摘要

A contactless power transfer system is proposed. The system includes a first coil 12 coupled to a power source 14 and configured to produce a magnetic field. A second coil 16 is configured to receive power from the first coil via the magnetic field. A field focusing element 18 is disposed between the first coil 12 and the second coil 16 and configured as a self resonant coil having a standing wave current distribution. The field focusing element 18 is further configured to focus the magnetic field onto the second coil 16 and enhance the coupling between the first coil 12 and the second coil 16.