| 摘要 |
A power-transmission-unit-side resonant circuit including a resonant capacitor (Cr) connected in series with a power transmission coil (Lp) and a power-reception-unit-side resonant circuit including a resonant capacitor (Crs) connected in series with a power reception coil (Ls) resonate with each other, thereby each causing sympathetic vibration. This allows power to be transferred using two kinds of coupling via the magnetic field and the electric field between the power transmission coil (Lp) and the power reception coil (Ls). Also, operation is performed at a switching frequency that is higher than a specific resonant frequency of the entire multi-resonant circuit, whereby a ZVS operation is performed. As a result, a switching loss can be reduced by a large amount and a highly efficient operation can be performed. In this way, a power transfer system with a reduced size and an increased power conversion efficiency is constructed. |
