An exemplary unmanned aerial vehicle (UAV) mountable to a conductor of an aerial power transmission line system includes a body having a rotor system, a motivation system attached to the body to motivate the UAV along the conductor, a battery carried by the body and electrically connected to at least one of the rotor system and the motivation system, a monitoring tool mounted with the body and an inductive coil carried by the body and in electric connection with the battery, wherein the inductive coil is configured to harvest electricity from the aerial power transmission line system and charge the battery.

A vehicle power delivery assembly that includes a mast configured to couple with a vehicle such that the mast projects from the vehicle, and a collection arm configured to be coupled with the mast in a location apart from the vehicle to engage an off-board source of electric current that is off-board the vehicle while the vehicle moves along one or more routes. One or more of the mast or the collection arm is formed from at least one inductive support member that provides an integrated inductor of the one or more of the mast or the collection arm through which at least some of the electric current that is received from the off-board source of the electric current is filtered prior to being conducted to the vehicle.

Example wirelessly powered unmanned aerial vehicles and tracks for providing wireless power are described herein. An example apparatus includes a track section having a transmitter coil to generate an alternating magnetic field and an unmanned aerial vehicle having a receiver coil. The alternating magnetic field induces an alternating current in the receiver coil when the unmanned aerial vehicle is disposed in the alternating magnetic field.

The processor of the processing unit of the abnormality determination device is configured to calculate a number ratio between (i) a number of mobile units having the power transmission efficiency less than a predetermined value and (ii) a number of mobile units having the power transmission efficiency greater than or equal to the predetermined value for each power reception location, based on the power reception history information of the plurality of mobile units stored in the storage unit, and determine an abnormality of the power transmitting device or the power receiving device of a mobile unit among the plurality of mobile units, based on the number ratio for each power reception location.

Methods and systems for precision charging control of an untethered vehicle include at least a wireless charging antenna carried by a vehicle and in electrical communication with a vehicle propulsion system. A plurality of wireless charging antennae is positioned on or within a roadway and are in communication with at least a roadway control system and a power source. An authentication connection is established between the vehicle wireless charging antenna and the roadway control system. A dynamic seek operation is triggered between the first wireless charging antenna and the one of the plurality of second wireless charging antennae to pair the first wireless charging antenna with the one of the plurality of second wireless charging antennae. A quantity of electrical energy is transferred between the first wireless charging antenna and the one of the plurality of second wireless charging antennae.

A wireless power reception system 1 includes: a power reception device 5 including a power reception coil 51 that receives power supplied wirelessly from a power transmission coil 41 of a power transmission device 4 installed in a road surface, at least a portion of the power reception coil 51 being housed in a wheel 3 of a moving body 2; and an onboard device 6 which is installed in the moving body 2 and which is electrically connected to the power reception device 5, wherein the power reception device 5 can transmit received power to the onboard device 6, and the power reception coil 51 includes a stacked plurality of spiral coil layers 52a and 52b.

A tire/wheel assembly of the present disclosure includes a tire with a tread portion and a wheel with a rim. The tire is mounted on the rim, and the tire/wheel assembly includes a power reception coil. In the contact patch when the tire/wheel assembly is filled to a prescribed internal pressure and subjected to the maximum load, the rectangle ratio of the ground contact length at a position, in the tire width direction, located 10% of the ground contact width inward in the tread width direction from an edge in the tire width direction to the ground contact length at the center of the contact patch in the tire width direction is 50% or more.

Magnetic or electromagnetic field generators are disposed on, near or toward opposite sides of a roadway, carriageway or lane such that magnetic or electromagnetic lines of force across at least a portion of the roadway, carriageway or lane. A vehicle traveling down the roadway, carriageway or lane interacts with the magnetic or electromagnetic lines of force to absorb energy that can be used for battery recharging or other purposes. Magnetic or electromagnetic flux density can be increased by embedding magnetic materials or additional structures in the top paving course forming the roadway, carriageway or lane.

A system for electrically connecting a vehicle to track electrodes, the system comprising vehicle electrodes configured to be electrically connected with a respective one of the track electrodes; actuators operatively connecting the vehicle electrodes to a structure of the vehicle for displacement of the vehicle electrodes relative to the structure of the vehicle, the actuators operable to vary distances between the vehicle electrodes and the track electrodes; sensors operatively mounted to one of the vehicle or track electrodes, the sensors detecting variations in the distances; and a controller operatively connected to the actuators for actuating the actuators as a function of the variations in the distances detected by the sensors.

A coil unit for a contactless power supply system includes a plurality of coils for electric power transfer, and a magnetic flux reduction structure. The plurality of coils include a first coil and a second coil adjacent to the first coil in a predetermined direction. The magnetic flux reduction structure reduces, during electric power transfer using the first coil, magnetic flux by which the first coil causes an induced voltage or induced current to be generated in the second coil.