Abstract: A wireless power transfer system includes: a supply device that is provided on a road and transfers power; and a vehicle that is equipped with a power reception device and travels on the road, so that the power reception device wirelessly receives power from the supply. Further, the vehicle includes a processor, which determines whether a total number of circuits having an interruption function related to power transfer is two or more in the vehicle and the supply device; and reduces an amount of power to be transferred by the supply device to the vehicle in a case where the total number of the circuits having the interruption function is less than two.

Abstract: A wireless power transfer system include: a supply device provided on a road; and a vehicle having a power reception device, the power reception device receiving power from the supply device and performing wireless transfer of the power to the vehicle. Further, the supply device includes: a primary coil; and a first short-range wireless communication device to communicate with the vehicle, the vehicle includes: a secondary coil; and a second short-range wireless communication device to communicate with the supply device, the first short-range wireless communication device is provided on a rear side in a traveling direction of the vehicle with respect to the primary coil, and the second short-range wireless communication device is provided on a front side in the traveling direction of the vehicle with respect to the secondary coil.

Abstract: A contactless power supply system that supplies power from a power supply device in a road to a power reception device in a vehicle. Further, the power supply device includes: first and second communication devices to execute wide-area and a short-range wireless communications, respectively with the power reception device; and an acceptable value deriving unit that derives an acceptable value of a power change rate feasible in the power reception device, the power supply device transmits information regarding the acceptable value of the power change rate to the power reception device, and the power reception device executes power control within a range not exceeding the acceptable value based on the information.

Abstract: A wireless power transfer system that performs wireless power transfer by magnetic coupling between a supply device on a ground and a vehicle on traveling, includes: a control device that controls wireless power transfer from a power transmitter of the supply device to a power receiver of the vehicle. Further, the control device determine that a coupling deviation has occurred in the magnetic coupling in a case where a state in which received power in the power receiver is smaller than a target value by a predetermined value or more has continued for a predetermined time period during the wireless power transfer from the supply device to the vehicle; and performs a state transition to Magnetic Coupling Check to confirm a coupling coefficient of the magnetic coupling in a case where the control device has determined that the coupling deviation has occurred.

Abstract: In a wireless power transfer system configured to contactlessly transfer power from a supply device in a road to a vehicle, the vehicle includes a plurality of power receiving devices configured to receive power from the supply device, and a power transfer ECU is configured to set, based on state information from the vehicle, a power transfer pattern by which each of a plurality of segments transfers power, the power transfer pattern being set for each power transfer device. The power transfer ECU is configured to cause each of the power transfer devices to transfer power based on the power transfer pattern.

Abstract: 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 the road by the power received from the supply device. Further, the supply device further includes: a processor, and the processor: acquires vehicle speed information indicating at least a speed of the vehicle; and sets a time for confirming magnetic coupling between the primary device and the secondary device based on the vehicle speed information.

Abstract: The control device for power supply during traveling includes a processor, and the processor determines the type of power transmitting device that transmits power to the vehicle while the vehicle is running, the type of power receiving device installed in the vehicle, and the foreign object detection unit installed in the power transmitting device. An upper limit of power to be transmitted from the power transmitting device to the power receiving device is determined based on the detection range of the means and the positional relationship between the power transmitting device and the power receiving device.

Abstract: A control device for power feeding during traveling includes a processor. Further, when a living object or a metal foreign object is detected around a primary coil of a power transfer device that transfers power to a power reception device of a vehicle that is traveling, the processor deletes identification information on the primary coil registered in an identification information list of the primary coil, and when the living object or the metal foreign object is not detected, the processor performs compatibility check and service authentication between the power reception device of the vehicle and the power transfer device.

Abstract: A wireless power transfer system transfers power from a supply device on a road to a vehicle using contactless power transfer. Further, the vehicle includes: a plurality of power reception devices that receive power from the supply device; and a processor, and the processor: determines power to be received by each of the plurality of power reception devices; and transmits power information related to the power of each of the plurality of power reception devices to the supply device.

Abstract: A power receiving device includes: a power receiving coil receiving power transmitted from a power transmission coil; a rectifier circuit between the power receiving coil and a load; a smoothing capacitor between the rectifier circuit and the load; and a control device executing a short-circuit mode of short-circuiting between output ends of the power receiving coil. Further, the control device includes an acquisition unit acquiring information indicating a drive frequency of an inverter in the power transmission device, a setting unit setting a switching frequency of the rectifier circuit to a value different from the drive frequency of the inverter, and a control unit executing the short-circuit mode based on the switching frequency set by the setting unit.

Abstract: A power reception device includes: a power reception coil that receives power transmitted from a power transmission coil in a non-contact manner; and a control device that executes a short-circuit mode in which a plurality of switching elements provided between the power reception coil and a load are caused to perform switching operations to short-circuit between output terminals of the power reception coil. Further, when a phase of a current and a phase of a voltage in the power reception device are deviated from each other, the control device sets switching timings of the switching elements to the short-circuit mode in a manner that the phase of the voltage is shifted in a direction in which a power factor of power supplied to the load is deteriorated.

Abstract: The vehicle includes a first communication device for directly or indirectly communicating with the ground power supplying apparatus by wide area wireless communication with a communication distance of greater than or equal to 10 meters, and an electronic control unit. The electronic control unit is configured to request the ground power supplying apparatus cancel supply of power to the vehicle by the wide area wireless communication when a predetermined condition is satisfied.

Abstract: A control apparatus for a power receiver which wirelessly receives electric power from a power transmitter. The control apparatus being configured to execute a restriction process that restricts received power by PWM control depending on an amount of the received power. The restriction process comprises calculating an increase gap which is a difference between an initial received power and a local maximum value of the received power with respect to a change in a duty in the PWM control, starting the PWM control when a first value which is a value obtained by adding the increase gap to a current received power exceeds a second value which is a value obtained by subtracting a predetermined margin from an upper limit of the received power, and increasing the duty until the received power becomes lower than the initial received power when starting the PWM control.

Abstract: A control apparatus for a power transmitter which wirelessly transmits electric power to a power receiver, the power receiver being configured to perform restriction control that restricts received power through switching control under a predetermined condition. The control apparatus is configured to execute a determination process that determines whether or not the power receiver is performing the restriction control based on an output current and an output voltage of a power inverter included in the power transmitter, and a power control process that controls transmission power of the power transmitter based on a result of the determination process.

Abstract: A noncontact power supplying system transfers power by noncontact between a ground power supplying apparatus and a vehicle. The vehicle includes a power reception side resonance circuit for receiving power, and a signal emitting device for emitting an alternating magnetic field or electric wave for transmitting vehicle identification information of the vehicle to the ground power supplying apparatus. The ground power supplying apparatus includes a power transmission side resonance circuit for transmitting power to the power reception side resonance circuit, and a signal reception device for receiving an alternating magnetic field or electric wave emitted from the signal emitting device. The ground power supplying apparatus detects a relative positional relationship between the power transmission side resonance circuit and the power reception side resonance circuit, based on the strength of the alternating magnetic field or electric wave which the signal reception device receives.

Abstract: A wireless power transfer system includes a first power transmission unit, a second power transmission unit, a power reception unit, a sensing unit, and an ECU. The first power transmission unit is provided in a parking space. The second power transmission unit is provided in a traveling lane for a vehicle. The sensing unit senses a sensing target in a sensing region set around the vehicle. When the sensing unit senses the sensing target, the ECU reduces electric power transmitted from the first power transmission unit or the second power transmission unit that is transmitting electric power to the vehicle. The ECU sets the sensing region to be larger when the power reception unit receives electric power from the first power transmission unit than when the power reception unit receives electric power from the second power transmission unit.

Abstract: A processor obtains power reception information including information on a power reception form of a power reception apparatus of each of a plurality of vehicles. The processor obtains power transmission information including information on a power transmission form of a power transmission apparatus available on a travel path through which each of the plurality of vehicles can travel. The processor selects as a vehicle to be dispatched from among the plurality of vehicles, a vehicle that can receive electric power from the power transmission apparatus on the travel path, based on the power reception information and the power transmission information.

Abstract: An ECU of a vehicle performs processing including transmitting a power feeding request during traveling along a power feeding lane, transmitting a vehicle ID when the vehicle is determined as having deviated from the power feeding lane, and transmitting the vehicle ID again when the vehicle is determined as having returned to the power feeding lane. A management server performs processing including starting power feeding when it receives the power feeding request, storing the received vehicle ID, stopping power feeding, and resuming power feeding when it receives again the vehicle ID and when the received vehicle ID matches with the stored vehicle ID.

Abstract: A server includes a communication device and a processor. From a user terminal, the communication device acquires a vehicle dispatch request including information indicating a vehicle dispatch location and a destination of a vehicle. When the communication device acquires the vehicle dispatch request, the processor determines a traveling route of the vehicle from a current location of the vehicle to the destination via the vehicle dispatch location in accordance with the vehicle dispatch request. The processor determines a route from the current location to the vehicle dispatch location such that an amount of power storage in a power storage device at the vehicle dispatch location is larger than an amount of electric power with which the vehicle can travel from the vehicle dispatch location to the destination.

Abstract: A controller of a contactless charging device performs a process including: acquiring vehicle information when a vehicle is present above a power transmitting device; permitting charging when it is determined that the vehicle is an electrically powered vehicle used as a taxi; starting charging; prohibiting charging when it is determined that the vehicle is not an electrically powered vehicle used as a taxi; and performing a notification process.