| 摘要 |
A wireless power transmission apparatus (2) according to the present disclosure includes a power transmission antenna (22-1, ,,, 22-N), receiver circuits (23-1, ... 23-N), and a control circuit (24). The power transmission antenna transmits high-frequency power at each of frequencies to wireless power reception apparatuses. Each of the receiver circuits obtains, from a corresponding one of the wireless power reception apparatuses (3-1, ..., 3-N), the value of a required voltage of the wireless power reception apparatus and the value of a power reception voltage received by the wireless power reception apparatus from the wireless power transmission apparatus. The control circuit obtains the required voltage value and the power reception voltage value from each of the receiver circuits, and controls the frequency of the high-frequency power. The control circuit changes the frequency of the high-frequency power so that the sum total of errors between the required voltage and the power reception voltage is minimized. |
