A pre-charge sequence for a flying capacitor converter of a wireless power system is disclosed. An example method includes determining that a ground assembly of the system is connected to an electric grid and is not receiving power. The ground assembly comprises (1) a first switch leg comprising…
Disclosed is an interface device that has one end forming a coil structure and is coupled to one end of both ends of a coil conductive wire formed by a plurality of conductive wire elements extending in a first direction, which is the direction of a current path, and being arranged in parallel, so…
A system and method for wirelessly or conductively (non-wireless) providing power. A three-phase coupling transmitter may be provided to wirelessly transmit modulated high-frequency voltage signals to a receiver, which may supply the received power to a load.
The wireless power transmission system according to the present disclosure includes: a supply device installed on the road side and transmitting electric power; a vehicle equipped with a power receiving device and traveling on the road; wherein in the wireless power transmission system, a power…
A wireless power transfer system wirelessly transfers power from a supply device to a vehicle, the supply device including a primary device that transfers power and being provided on a road, the vehicle being equipped with a power reception device that includes a secondary device and traveling on…
Devices, systems, and methods related to wireless charging for transportation vehicles include a wireless charge assembly including a capacitor bank assembly, shielding body, and a coil assembly. The coil assembly can include a coil body having a plurality of shielding turns positioned which can be…
Devices, systems, and methods related to wireless power transfer for vehicles can include a wireless power transfer assembly which may be coupled with the vehicle chassis. The assembly can include a shielding body, and a power coil assembly arranged on one side of the shielding body for wireless…
A method for wirelessly or conductively (non-wireless) providing AC or DC power in AC or DC load applications and bidirectional applications.
The present disclosure relates to the field of EV-DWPT (electric vehicle dynamic wireless power transfer), and specifically discloses a double solenoid EV-DWPT system and a parameter optimization method thereof. The system is provided with a magnetic coupling mechanism, comprising a transmitting…
A power control device includes a power receiving unit, a power converting unit, and a control device. The power receiving unit includes a secondary coil that receives AC electric power transmitted from a power transmitting device in a non-contact manner. The power converting unit includes…
Modular coil assemblies for wireless charging of vehicles have coil geometries and communications designed to limit electromagnetic field (EMF) levels in regions where humans or other living objects may be present. The modular coil assemblies are designed with the ability to shape the magnetic…
A dynamic wireless power transfer system can include a dynamic wireless power transfer transmission system and a dynamic wireless power transfer reception system. The dynamic wireless power transfer transmission system can include a signal receiver, an array of coils of conductors, an array of…
An electrified vehicle includes a wireless charger that wirelessly receives power from an external source, cameras, LEDs, a speaker, and at least one controller programmed individually or in combination to, when the wireless charger is receiving power from the external source, process images from…
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…
A system and method for controlling output power in an LCC-series wireless power system based on one or more primary-side variables, such as a peak voltage in the LCC-series compensation circuitry.
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…
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…
A resonator circuit for a contactless energy transmission system for charging electric vehicles and a contactless energy transmission system for charging electric vehicles are described. The resonator circuit may include first and second terminals, multiple windings, and first and second switching…
A method for wirelessly or conductively (non-wireless) providing AC or DC power in AC or DC load applications and bidirectional applications.
A vehicle is capable of receiving electric power supplied from a charger and capable of receiving electric power supplied from a charging mat. The charging mat is movable and capable of wireless power transfer. A method for providing a vehicle charging service includes a first step and a second…
In a control apparatus for an in-wheel motor vehicle equipped with a motor provided in a tire wheel, at least one sensor provided in a case accommodating the motor, an electric power supply provided on a vehicle body and an electrical storage device that stores electric power, a controller provided…
An external power assist system for an eVTOL aircraft having one or more onboard batteries includes a subsurface power source and a power transfer interface electrically coupled to the subsurface power source. The power transfer interface is movable between various positions including a deployed…
The present disclosure describes a system that includes: an unmanned aerial vehicle (UAV) comprising one or more on-board batteries, and a self-powering payload coupled to the UAV, wherein the self-powering payload comprises: one or more transformable devices configured to alter an orientation of…
A transmit end, a receive end, a method, and a system for wireless charging are provided, and are applied to the field of electric vehicles. A transmit-end controller compares an actual output current of an inverter with a preset upper limit value of an output current of the inverter and controls…
A service plug that is attachable to and detachable from a power feed circuit unit is provided with first conductive members and second conductive members, and when the service plug is attached to the power feed circuit unit, the second conductive members become electrically connected to second…
A method for checking a test secondary unit of an inductive test charging system for charging an electrical energy store, wherein the test charging system comprises the test secondary unit having a test secondary coil and a reference primary unit having a reference primary coil, includes recording…
An electrically powered work vehicle includes a work vehicle frame and a plurality of ground engaging units for supporting the work vehicle frame from a ground surface, at least one of the ground engaging units being powered by an electric drive motor to drive the vehicle. An electrical power…
Modular coil assemblies for wireless charging of vehicles have coil geometries and communications designed to limit electromagnetic field (EMF) levels in regions where humans or other living objects may be present. The modular coil assemblies are designed with the ability to shape the magnetic…
A power control of a wireless charging inverter is provided. Communication is performed between a driving vehicle and an inverter used for wireless charging of a vehicle. Using the location information of the driving vehicle, the time for the driving vehicle to enter the power supply line and the…
A vehicle power supply system is configured to supply power to a vehicle from a power supply apparatus laid on a power supply lane of a vehicle travel path, the power supply apparatus includes a plurality of power supply segments laid in a preset interval along the power supply lane, and a…