Patent ID: 11916404
Assignee: UT-BATTELLE, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 7:
8. A system for wirelessly transferring power to a remote device, the system comprising:
a transmitter configured to wirelessly transmit power to a receiver of the remote device;
switching circuitry coupled to the transmitter, the switching circuitry configured to receive power from a power supply, the switching circuitry configured to supply power to the transmitter based on the power received from the power supply;
control circuitry operably coupled to the switching circuitry, the control circuitry configured to direct operation of the switching circuitry according to a switching frequency;
first tuning circuitry coupled directly to the transmitter, the first tuning circuitry including a first inductor and a first capacitor connected in series with the transmitter, the first tuning circuitry including a second capacitor connected in parallel to the first capacitor and the transmitter; and
second tuning circuitry coupled directly to the switching circuitry, the second tuning circuitry operable to direct power from the switching circuitry to the first tuning circuitry for supply to the transmitter, the second tuning circuitry including a reactance operable to
establish (i) inductive operation of the switching circuitry at the switching frequency of the switching circuitry that corresponds to a power factor in a range 0.80 to 0.99, and (ii) zero voltage switching operation for the switching circuitry at the switching frequency of the switching circuitry, and
mitigate current harmonics of the switching circuitry,

wherein the second tuning circuitry includes a second inductor provided in series with, and different from, the first inductor of the first tuning circuitry, wherein an inductance of the second inductor defines at least a portion of the reactance of the second tuning circuitry.