| 摘要 |
PROBLEM TO BE SOLVED: To enable effective power transmission by maintaining the power factor of power to be supplied from a high-frequency power source, when the equivalent resistance component of load changes. SOLUTION: This non-contact feeding device which supplies high frequency power to the load in a non-contact manner is equipped with the high frequency power source for generating high-frequency power, primary conductor for converting high-frequency power generated by the power source into high-frequency magnetic flux, a power receiving coil which generates induced electromotive force by interlinking the high-frequency magnetic flux generated by the primary conductor and supplies the electromotive force to the load, a resistance-detecting circuit for detecting the resistive component of the load, and a frequency control part for controlling the frequency of high-frequency power generated by the power source according to the resistance component detected by the detection circuit. The power factor of the high-frequency power outputted from the power source can be made nearly equal to '1', and the efficiency of power consumed in the load with respect to apparent power (voltage × current) which the power source supplies is increased, so that effective power transmission is enabled. |
