| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and effective induction power supply system and method which supplies selected radio electric energy while maintaining high transfer efficiency.SOLUTION: An induction power supply device (100) maintains resonance frequency with a feedback signal from a secondary circuit, adjusts a duty cycle, and allows a controller (110), a drive device circuit (111), and a switching circuit (115) to work together to generate an AC signal of a selected operation frequency and the duty cycle. The AC signal is applied to a tank circuit (120) for generating an induction electromagnetic field which supplies power to the secondary circuit. The secondary circuit returns the feedback signal on the received electric power to the first controller (110). Power transfer efficiency is optimized by maintaining an operation frequency to the resonance frequency substantially and electric energy to be transferred is controlled by adjusting the duty cycle. |
