RESONANT POWER TRANSFER SYSTEMS HAVING EFFICIENCY OPTIMIZATION BASED ON RECEIVER IMPEDANCE
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United States of America Patent
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Issued Date -
May 6, 2021
app pub date -
Sep 17, 2020
filing date -
Oct 7, 2015
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Abstract
The present disclosure provides systems and methods for controlling wireless power transfer systems. A wireless power transfer system includes a transmitter driven by a power source and a transmit controller, wherein the transmitter is configured to control delivery of wireless power, and a receiver inductively coupled to the transmitter, the receiver configured to receive the wireless power from the transmitter and deliver the received wireless power to a load. The receiver includes receiver electronics configured to determine a Thevenin equivalent impedance of the wireless power transfer system, determine a Thevenin equivalent source voltage of the wireless power transfer system, and control, based on the determined Thevenin equivalent impedance and the determined Thevenin equivalent source voltage, an ideal source voltage of the receiver to vary the amount of the wireless power transferred from the transmitter to the receiver.
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