ADAPTIVE CONTROL OF WIRELESS POWER TRANSFER

摘要

A method for wireless power transfer adapts to changing configuration of receivers, including changes in number of, location and/or orientation of, magnetic coupling to, and load of circuits (e.g., battery charging circuits) of one or more receivers. The adaptation can be performed without interrupting optimal or near-optimal power transfer to the receivers, and can provide a measure of fairness among multiple receivers.

主权项

1. A method for wireless power transfer using a transmitter having a plurality of transmitter coils that are magnetically coupled to one or more receiver coils, the one or more receiver coils being electrically coupled to one or more circuits wirelessly powered from the transmitter, the method comprising:
maintaining first data characterizing an electrical effect on the transmitter of the one or more receiver coils electrically coupled to the one or more circuits; determining, using the first data, second data characterizing a periodic excitation of the plurality of transmitter coils; causing application of the periodic excitation to the plurality of transmitter coils according to the second data; wherein maintaining the first data includes updating the first data using third data characterizing a response of each transmitting coil to the periodic excitation applied to the plurality of transmitting coils.