Wireless energy transfer for vehicles

A power source for wirelessly providing power to a power receiver coupled to a vehicle, the power source comprising:

• a power supply;
• an electromagnetic resonator coupled to the power supply and configured to provide resonant, non-radiative wireless power transfer to the wireless power receiver;
• and
• a member formed of conducting material and having a surface positioned relative to a loss-inducing object so that a magnitude of a magnetic field generated by at least one of the electromagnetic resonator and the power receiver is reduced in a spatial region corresponding to the loss-inducing object relative to that in the absence of the member,
• wherein the member is not resonant with the electromagnetic resonator.

A vehicle wireless power system, comprising:

• a power supply;
• a first electromagnetic resonator coupled to the power supply;
• a load coupled to a drive system of the vehicle;
• and
• a second electromagnetic resonator coupled to the load and configured for attachment to the vehicle, wherein the second electromagnetic resonator is configured wirelessly receive resonant, non-radiative wireless power from the first electromagnetic resonator and to deliver power to the load;
• and
• a member formed of conducting material and having a surface positioned relative to a loss-inducing object so that a magnitude of a magnetic field generated by at least one of the first and second electromagnetic resonators is reduced in a spatial region corresponding to the loss-inducing object relative to that in the absence of the member,
• wherein the member is not resonant with the first or second electromagnetic resonators.