RESONANT POWER TRANSFER SYSTEM AND METHOD OF ESTIMATING SYSTEM STATE

摘要

Systems for tuning a wireless power transfer system are provided, which may include any number of features. In one embodiment, a wireless power transfer system can include a transmit controller connected to the transmitter resonator and configured to measure an impedance on the transmitter resonator. The transmit controller can be configured to determine a load resistance of the receiver resonator and a coupling coefficient between the transmitter and receiver resonators based on the measured impedance on the transmitter resonator. The transmit controller can be further configured to adjust a power transmission parameter of the transmitter resonator based on the determined load resistance and the coupling coefficient to achieve a controlled voltage at a load of the receiver. Methods of use are also provided.

主权项

1. A method of tuning and controlling a wireless power system, comprising the steps of:
measuring an impedance on a transmitter resonator; determining a load resistance of a receiver resonator and a coupling coefficient between the transmitter and receiver resonators based on the measured impedance; and adjusting a power transmission parameter of the transmitter resonator based on the determined load resistance and the coupling coefficient to achieve a controlled voltage at a load of the receiver.