| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact power supply system for reducing a switching loss of an amplifier that generates AC power. <P>SOLUTION: A non-contact power supply system comprises a power reception antenna for receiving power, a power transmission antenna for transmitting power to the power reception antenna, and a filter circuit capable of varying the filter property disposed at the post-stage of the reception antenna. The system adjusts the filter circuit characteristic to adjust whole system frequency characteristic. When an AC power in a resonance frequency is transmitted by electromagnetic coupling between antennas,the system allows the power to transmit through the resonance frequency of the antenna itself and reflects a harmonic wave of the resonance frequency onto the AC power driver. Then, a switching loss is reduced by alternating a short circuit state and an open state of the AC power driver load impedance between an odd-order harmonic wave and an even-order harmonic wave. <P>COPYRIGHT: (C)2012,JPO&INPIT |
