Abstract:
A vehicle includes: a wireless power receiver that receives power in a wireless manner from a plurality of wireless power transmitters arranged at predetermined intervals in a vehicle traveling direction on a traveling path; a rotating electric machine capable of generating driving force for traveling; an inverter that exchanges power with the rotating electric machine; a first power supply; a second power supply having higher output density and lower capacity density than the first power supply; and a DC-DC converter that exchanges power with the second power supply. Further, the wireless power receiver, the inverter, the DC-DC converter, and the first power supply are electrically connected in parallel to a power bus that supplies the power from the wireless power receiver to the inverter, and the second power supply and the power bus are electrically connected via the DC-DC converter.
Abstract:
A metal object detection device includes a plurality of detection coils, a capacitor configuring a resonant circuit in cooperation with each of at least two of the detection coils, a first series connection body, a second series connection body, a voltage applying unit, and a processing unit. The voltage applying unit applies an AC voltage to both ends of each of the first series connection body and the second series connection body. The processing unit performs a process for detecting the metal object on the basis of a potential difference between a connection point included in the first series connection body and a connection point included in the second series connection body.
Abstract:
A contactless power supply system for transferring power without contact between a primary side coil and a secondary side coil is provided. In the contactless power supply system, a manipulation unit manipulates a secondary side converter so that power outputted to a load is controlled to be a command value. The manipulation unit manipulates an input voltage of a primary side resonance circuit so that a current flowing in the primary side resonance circuit equals a product of a current flowing in the secondary side resonance circuit and a current coefficient. The current coefficient is defined as a square root of a specific value and the specific value is an equivalent resistance of the secondary side resonance circuit divided by an equivalent resistance of the primary side resonance circuit.