[Problem] To prevent an unnecessary electromagnetic wave from being radiated from a power transmission element. [Solution] In a wireless power transfer system that transmits power through electromagnetic wave from a power transmission element 21 of power t...

In wireless power transfer, to perform power supply to a power receiving device by selecting a power transmission device appropriately, a power receiving device 20 transmits request-power to a plurality of power transmission devices 10, the request-power b...

The transmission device 10 acquires from the positioning device 14 a direction α in which the power receiving device 20 exists, makes an oriented direction of the transmission element 12 face the direction of the power receiving device 20 and starts trans...

To certainly perform power transfer to a plurality of power receiving devices, a power transmission device 10 is provided that allocates one of a plurality of channels to perform wireless power transfer to a power receiving device 20 in response to a power...

A transmission device 10 that performs power supply by wireless power transfer acquires a current position of the power receiving device 20, and performs control to authorize the power supply in a case where the power receiving device 20 is in a preset are...

Radiated noise generated from the charging cable of an electric vehicle is reduced. At least a current feeding line 41 through which a charging current is carried, a ground wire 42 and a shielded wire 44, that are bound is used as a charging cable 4 that f...

The economical load distribution adjusting device 10 acquires an optimal hydroelectric output, optimal demand, and optimal power price from the supply-demand planning device 23, acquires the planned hydroelectric output planned by the water level planning ...

The economical load distribution adjusting device 10 acquires an optimal hydroelectric output, optimal demand, and optimal power price from the supply-demand planning device 23, acquires the planned hydroelectric output planned by the water level planning ...