WIRELESS POWER FEEDING DEVICE

摘要

A power transmission loop coil (np) provided on a power transmission device (PSU) extracts electric energy from a DC power source to generate cyclically-variable resonance energy for an electromagnetic field in the space. A power receiving loop coil (ns) provided on a power receiving device (PRU) extracts the cyclically-variable resonance energy for the electromagnetic field from the space as electric energy to supply a load with electric power. The power transmission loop coil (np) and the power receiving loop coil (ns) are coupled via electromagnetic resonance so that electric power is wirelessly supplied from the power transmission device (PSU) to the power receiving device (PRU).