| 摘要 |
The frequency generated by a high-frequency high-voltage generator (11) is set to a higher one of the frequencies of two coupled modes which take place when a resonance circuit of a power transmission device (101) and that of a power reception device (201) are coupled to each other. For this reason, charge generated on an active electrode (3) of the power transmission device (101) and that generated on an active electrode (6) of the power reception device (201) have the same polarity, while an electric potential of a passive electrode (2) of the power transmission device (101) and that of a passive electrode (7) of the power reception device (201) have the same polarity. When the passive electrode (2) of the power transmission device (101) is connected to the ground, the electric potential of the passive electrode (2) is zero V Therefore, the electric potential of the passive electrode (7) of the power reception device (201) is substantially zero V. This configuration forms a power transfer system which can suppress radiation of an unnecessary electromagnetic field from the passive electrode of the power reception device. |
