| 摘要 |
A wireless power supply device and a wireless power supply system of the present invention include a rectifier circuit (1) to be connected to a commercial power source, a conversion unit which is connected to the rectifier circuit (1), a resonance circuit (8) which is connected to the conversion unit and transmits power toward a power-receiving device (R) wirelessly, a communication unit (11) which receives, from the power-receiving device (R), information relating to power supply to a load supplied with power, and a control unit which is connected to the communication unit (11) and the conversion unit and controls the conversion unit based on the information so that the value of power supply impedance of the load falls within a predetermined range. |
