Techniques for converting power received from a power grid at a first voltage and outputting a signal at a second voltage are discussed herein. A power converter with a transformer that has a 22.5 degrees phase shift between current output by corresponding pairs of secondary windings can be utilized to convert power of a first level to power of a second level. The transformer can output power from 30 secondary windings. The power converter can output power with a total harmonic distortion of 5% and an efficiency of 96% or higher. Further, power can be output by a transmission coil and received by a receive coil in a device, such as a vehicle, to wirelessly charge the vehicle.

An individualized vehicular charging mat includes a body defining two tire channels terminating at respective channel ends, and a wireless charging element arranged within or on top of the body. The two tire channels include respective entrances at a side edge of the body, and are separated by a track width for a particular vehicle make, model and model year(s). The wireless charging element is arranged at a location where the wireless charging element is configured to optimally charge a vehicle of the particular vehicle make, model and model year(s) when tires of the vehicle come to rest at the channel ends.

An individualized vehicular charging mat includes a body defining two tire channels terminating at respective channel ends, and a wireless charging element arranged within or on top of the body. The two tire channels include respective entrances at a side edge of the body, and are separated by a track width for a particular vehicle make, model and model year(s). The wireless charging element is arranged at a location where the wireless charging element is configured to optimally charge a vehicle of the particular vehicle make, model and model year(s) when tires of the vehicle come to rest at the channel ends.

A mobile object apparatus includes an electric power reception unit that receives electric power transmitted in a non-contact manner from, out of a plurality of power feed apparatuses that are allocated to a plurality of small areas within a predetermined area and are capable of transmitting electric power in a non-contact manner, the power feed apparatus allocated to the small area adjacent to the mobile object apparatus, a drive unit that executes a movement operation on the predetermined area, and an electric power storage unit that stores an electric power amount requisite for the movement operation to the small areas located next to the adjacent small area.

A mobile object apparatus includes an electric power reception unit that receives electric power transmitted in a non-contact manner from, out of a plurality of power feed apparatuses that are allocated to a plurality of small areas within a predetermined area and are capable of transmitting electric power in a non-contact manner, the power feed apparatus allocated to the small area adjacent to the mobile object apparatus, a drive unit that executes a movement operation on the predetermined area, and an electric power storage unit that stores an electric power amount requisite for the movement operation to the small areas located next to the adjacent small area.

In one or more embodiments described herein, devices, systems, methods and/or apparatuses are described that can facilitate locational awareness and/or guidance of an inductive charging element relative to a target charging station. A device can comprise an inductive charging element, a signal component located relative to the inductive charging element for common movement with the inducting charging element, wherein the signal component transmits or receives a signal from a target position, and a controller that determines a distance between the inductive charging element and the target position based on a time measurement of the signal. The time measurement can include a time of arrival measurement and/or a time of flight measurement. The signal component can be an ultrawideband antenna, laser doppler device, acoustic device, electromagnetic device and/or other transmitter and/or receiver.

In a wireless power transfer apparatus, a characteristic adjuster has a frequency characteristic that causes, in a power transfer mode from at least one power transmission unit to a power receiving apparatus, a resonant power transmission circuit to have a resonance frequency that substantially matches an operating frequency. The reactance of a power transmission coil has a reference value in the power transfer mode. The frequency characteristic of the characteristic adjuster causes, in a power non-transfer mode from the at least one power transmission unit to the power receiving apparatus, a reactance of a power transmission coil to become an adjusted value that is higher than the reference value.

A power supply facility includes a wireless communication unit capable of wirelessly communicating with a plurality of electric vehicles traveling in line, a plurality of power supply coils installed at a predetermined interval, and an inter-vehicle calculation unit configured to acquire a plurality of pieces of information including power supply coil interval information indicating a distance of the predetermined interval, information on an entire length of a vehicle body of each of the plurality of electric vehicles, and information on a position of a power reception coil installed in each of the vehicle bodies, and calculate an inter-vehicle distance for leading each of the plurality of electric vehicles to be parked in accordance with the acquired plurality of pieces of information so as to align the plurality of power supply coils with the power reception coils to face each other.

A power supply facility includes a wireless communication unit capable of wirelessly communicating with a plurality of electric vehicles traveling in line, a plurality of power supply coils installed at a predetermined interval, and an inter-vehicle calculation unit configured to acquire a plurality of pieces of information including power supply coil interval information indicating a distance of the predetermined interval, information on an entire length of a vehicle body of each of the plurality of electric vehicles, and information on a position of a power reception coil installed in each of the vehicle bodies, and calculate an inter-vehicle distance for leading each of the plurality of electric vehicles to be parked in accordance with the acquired plurality of pieces of information so as to align the plurality of power supply coils with the power reception coils to face each other.

An adjustment system causes a target power supply device to execute first processing and second processing while causing at least one adjacent power supply device to perform a regular power supply operation. The first processing is processing for measuring a first voltage value while a power supply circuit of the target power supply device does not output an alternating current. The second processing is processing for measuring a second voltage value while the power supply circuit of the target power supply device outputs an alternating current. The adjustment system obtains a feeder circuit reactance of a feeder circuit based on the difference between the first voltage value and the second value, and executes adjustment processing for adjusting circuit characteristics with use of an adjustment unit in accordance with the obtained feeder circuit reactance in such a manner that the feeder circuit impedance is a predetermined impedance.