A land transport vehicle includes a traction motor; a capture device for contact with a power supply segment of an external power supply device and for connection to the traction motor; a communication unit to communicate with ground equipment associated with the power supply segment in a vicinity of which the land transport vehicle is currently traveling; an onboard controller connected to the communication unit; and an onboard power supply device for connection to the traction motor, the onboard controller being adapted to a) regulate the power supplied to the traction motor, b) receive a signal indicating an end of a zone with an external power supply, and c) command, after receiving the signal indicating the end of a zone, a transition from a power demand from the external power supply device toward a power demand from the onboard power supply device to power the traction motor.

Self-insulated power supply line for vehicles in which a magnetically attractable flexible belt element housed in an insulating casing provides in sequence the power supply to a plurality of conducting elements spaced from one another and external to the casing. A detector circuit is provided adapted to measure the dispersion current which flows between the live conducting element and conducting elements adjacent to it in the case of poor insulation conditions of the road surface.

A system for wireless power transfer of on-road vehicles is provided herein. The system includes a plurality of base stations; a power transmission line located beneath a surface of a road having a plurality of segments, each segment having at least one pair of coils and at least one capacitor electrically connected via a switch to the coils in the segment; and at least one vehicle having at least one power receiving segment having at least two coils, connected to at least one capacitor, wherein the at least one vehicle further includes a communication transmitter configured to transmit a power requesting signal, wherein the coils of the power transmitting segment are configured to receive the power requesting signal; and wherein each of the base stations is further configured to feed a plurality of the power transmitting segments with current at a resonance frequency, responsive to the power requesting signal.

A system for wireless power transfer of on-road vehicles is provided herein. The system includes a plurality of base stations; a power transmission line located beneath a surface of a road having a plurality of segments, each segment having at least one pair of coils and at least one capacitor electrically connected via a switch to the coils in the segment; and at least one vehicle having at least one power receiving segment having at least two coils, connected to at least one capacitor, wherein the at least one vehicle further includes a communication transmitter configured to transmit a power requesting signal, wherein the coils of the power transmitting segment are configured to receive the power requesting signal; and wherein each of the base stations is further configured to feed a plurality of the power transmitting segments with current at a resonance frequency, responsive to the power requesting signal.

A system and method for reducing harmonics in a rectified incoming wireless power transfer signal at a receiver of an electrical vehicle are provided herein. The electrical vehicle receiver shall be equipped with a two-stage filter which shall reduce the harmonics post rectifying of the alternating current inducted at the receiver coils. Advantageously, using a specially designed capacitor, an effective reduction of the harmonics is achieved for power efficiency and electromagnetic compliance (EMC). The design is challenging due to the high amperage and frequency range of the alternating current.

A system and method for reducing harmonics in a rectified incoming wireless power transfer signal at a receiver of an electrical vehicle are provided herein. The electrical vehicle receiver shall be equipped with a two-stage filter which shall reduce the harmonics post rectifying of the alternating current inducted at the receiver coils. Advantageously, using a specially designed capacitor, an effective reduction of the harmonics is achieved for power efficiency and electromagnetic compliance (EMC). The design is challenging due to the high amperage and frequency range of the alternating current.

A system and method for protecting against overvoltage in a vehicle assembly of an electric vehicle, wherein the vehicle assembly is in communication with a ground assembly as a part of a wireless power transfer system for electric vehicles, are provided herein. The system may include: a communication unit in the vehicle assembly configured to repeatedly transmit a power request signal to the ground assembly; a protection circuitry configured to: detect an overvoltage event across an output of the vehicle assembly; and divert current off the output of the vehicle assembly, into a by-pass circuitry, upon detection of the overvoltage event, wherein upon receiving an indication from the protection circuitry of the overvoltage event, the communication unit stops transmitting the power request signal to the ground assembly

A system and method for protecting against overvoltage in a vehicle assembly of an electric vehicle, wherein the vehicle assembly is in communication with a ground assembly as a part of a wireless power transfer system for electric vehicles, are provided herein. The system may include: a communication unit in the vehicle assembly configured to repeatedly transmit a power request signal to the ground assembly; a protection circuitry configured to: detect an overvoltage event across an output of the vehicle assembly; and divert current off the output of the vehicle assembly, into a by-pass circuitry, upon detection of the overvoltage event, wherein upon receiving an indication from the protection circuitry of the overvoltage event, the communication unit stops transmitting the power request signal to the ground assembly