| 摘要 |
PROBLEM TO BE SOLVED: To increase transmission efficiency of power of a magnetic resonance-type wireless power-feeding system.SOLUTION: A magnetic resonance-type wireless power-feeding system of the present invention includes: an AC power supply; a voltage converting coil connected to the AC power supply; a power-transmitting-side LC circuit; a power-receiving-side LC circuit; an impedance converting coil; a load connected to the impedance converting coil; and a transmission efficiency adjusting capacitor connected in parallel to the load. The power-transmitting-side LC circuit has a power-transmitting-side coil disposed near the voltage converting coil and excited by electromagnetic induction between the voltage converting coil and the power-transmitting-side coil; and a power-transmitting-side capacitor. The power-receiving-side LC circuit has a power-receiving-side coil resonating with the power-transmitting-side coil and a power-receiving-side capacitor. The impedance converting coil is disposed near the power-receiving-side LC circuit and is excited by electromagnetic induction between the power-receiving-side coil and the impedance converting coil. The transmission efficiency adjusting capacitor has capacitance so as to increase transmission efficiency of power from the AC power supply to the load. |
