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.

A mining haul truck driven by electrical wheel motors is operated with all electrical power sources; that is, without a diesel engine. While travelling on the loading site, the mining haul truck is powered by an on-board energy storage system, which may include a bank of ultracapacitors. The mining haul truck then moves to the bottom of a trolley ramp and is coupled to trolley lines. While travelling uphill, the mining haul truck is powered by the trolley lines, and the on-board energy storage system is charged by the trolley lines. When the mining haul truck reaches the top of the trolley ramp, the mining haul truck is uncoupled from the trolley lines. While travelling on the unloading site, the mining haul truck is powered by the on-board energy storage system. The on-board energy storage system may also be charged by retard energy generated by the wheel motors during braking.

A mining haul truck driven by electrical wheel motors is operated with all electrical power sources; that is, without a diesel engine. While travelling on the loading site, the mining haul truck is powered by an on-board energy storage system, which may include a bank of ultracapacitors. The mining haul truck then moves to the bottom of a trolley ramp and is coupled to trolley lines. While travelling uphill, the mining haul truck is powered by the trolley lines, and the on-board energy storage system is charged by the trolley lines. When the mining haul truck reaches the top of the trolley ramp, the mining haul truck is uncoupled from the trolley lines. While travelling on the unloading site, the mining haul truck is powered by the on-board energy storage system. The on-board energy storage system may also be charged by retard energy generated by the wheel motors during braking.

The present disclosure relates to an electrically powered aircraft comprising: a propulsion system; a navigation control system operatively coupled to said propulsion system to navigate the aircraft to a desired location; a rechargeable electrical power storage to power the aircraft during operation; and a power line charging unit comprising a current transformer operatively coupled to said rechargeable electrical power storage and remotely operable to engage a power line in flight to recharge said rechargeable electrical power storage and remotely disengage said power line once recharged.

A self-propelled earth working machine includes a machine frame and a traveling gear, the traveling gear including drive units rollable on a contact subsurface of the earth working machine, the machine frame supporting a working apparatus, the earth working machine having as a main functional unit a work drive in order to drive the working apparatus to perform a work movement for earth working, and the earth working machine having at least one further functional unit, the earth working machine having a common power source, which provides both the energy for the work drive as well as the energy for the further functional unit. The common power source includes a common electrical supply switching device, to which every functional unit is connected in electrically conductive fashion, wherein the main functional unit includes an electric motor.

A working machine is provided, comprising a working machine frame structure, at least one electric machine configured to propel the working machine, a re-chargeable energy storage system electrically connected to the at least one electric machine, the at least one electric machine being operable by electric power received from the re-chargeable energy storage system, a load implement body configured to receive a load and being pivotably connected to the working machine frame structure at a pivot joint, and an electrical charge element electrically connected to the re-chargeable energy storage system, the electrical charge element being arranged on a surface portion of the load implement body and configured to, in a charging state, receive electric power from a vertically elevated power source, wherein the working machine is configured to bring the electrical charge element into the charging state by rotation of the load implement body around the pivot joint.

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.

A roadway powered electric vehicle system includes a power supply (101) which makes power available inductively to one or more modules (111) provided in or under a roadway. Modules (111) make a magnetic field selectively available to one or more vehicles travelling over the roadway corresponding to the location of the vehicle. The presence or strength of the magnetic field provided on the roadway may be dependent upon the vehicle type or category.