Coordinated wireless power transfer

A method for wireless power transfer comprising:

• determining a location of a receiver device;
• transmitting wireless power to the receiver device using one or both of a first wireless power transfer device and a second wireless power device based on the location of the receiver, wherein the first wireless power transfer device uses a first type of wireless power transfer and the second wireless power transfer device uses a second type of wireless power transfer;
• and
• adjusting an amount of power transmitted to the receiver device by the first wireless power transfer device using the first type of wireless power transfer based on an amount of power transmitted to the receiver by the second wireless power transfer device using the second type of wireless power transfer.

A method for wireless power transfer comprising:

• determining locations of a plurality of receiver devices;
• determining, based on the locations of the plurality of receiver devices, whether at least one receiver device is within a specified distance of a magnetic resonance transmitter;
• controlling the magnetic resonance transmitter to generate an oscillating magnetic field when there is as at least one receiver device within the specified distance of the magnetic resonance transmitter and to not generate the oscillating magnetic field when there are no receiver devices within the specified distance of the magnetic resonance transmitter;
• receiving power data from one or more of the plurality of receiver devices;
• controlling an ultrasonic transducer array to generate one or more ultrasound beams targeted to at least one of the plurality of receiver devices based on the received power data.

A method for wireless power transfer comprising

• determining whether there is a clear line-of-sight between any infrared laser of an infrared transmitter and any portion of a photo-voltaic receiver of any of one or more receiver devices;
• controlling the infrared laser transmitter to generate at least one beam of infrared light when there is as at least one infrared laser with a clear line-of-sight to a portion of a photo-voltaic receiver of a receiver device of the one or more receiver devices, wherein the at least one beam of infrared light is generated using the infrared laser with the clear line-of-sight and is targeted at the portion of the photo-voltaic receiver to which the infrared laser has a clear line-of-sight, and to not generate any beam of infrared light when there are no clear lines-of-sight between any infrared laser and any portion of a photo-voltaic receiver of any of the one or more receiver devices;
• receiving power data from one or more of the receiver devices;
• controlling an ultrasonic transducer array to generate one or more ultrasound beams targeted to at least one of the receiver devices based on the received power data.

A transmitter device comprising:

• a first wireless power transfer device that uses a first type of wireless power transfer;
• a second wireless power transfer device that uses a second type of wireless power transfer different from the first type of wireless power transfer;
• and
• a controller coupled to the first wireless power transfer device and the second wireless power transfer device that controls the transmission of wireless power from the first wireless power transfer device and the second wireless power transfer device;