Wireless power transmitter and method of controlling the same
First Claim
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1. A wireless power transmitter comprising:
- a switch comprising switches connected to a transmission resonator;
a current detector configured to detect a transient current induced in the transmission resonator; and
a controller configured to;
control the switch circuit, andadjust an output of the wireless power transmitter based on an amplitude of the transient current,wherein the controller is further configured to;
calculate a distance between the wireless power transmitter and a wireless power receiver based on the amplitude of the transient current, andadjust an output of the wireless power transmitter based on the calculated distance between the wireless power transmitter and the wireless power receiver.
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Abstract
A wireless power transmitter includes a switch circuit including switches connected to a transmission resonator; a current detector configured to detect a transient current induced in the transmission resonator; and a controller configured to control the switch circuit and adjust an output of the wireless power transmitter based on an amplitude of the transient current.
9 Citations
18 Claims
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1. A wireless power transmitter comprising:
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a switch comprising switches connected to a transmission resonator; a current detector configured to detect a transient current induced in the transmission resonator; and a controller configured to; control the switch circuit, and adjust an output of the wireless power transmitter based on an amplitude of the transient current, wherein the controller is further configured to; calculate a distance between the wireless power transmitter and a wireless power receiver based on the amplitude of the transient current, and adjust an output of the wireless power transmitter based on the calculated distance between the wireless power transmitter and the wireless power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a wireless power transmitter, the method comprising:
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detecting a transient current induced in a transmission resonator; and adjusting an output of the wireless power transmitter based on an amplitude of the detected transient current, wherein the adjusting of the output of the wireless power transmitter based on the amplitude of the transient current comprises; calculating a distance between the wireless power transmitter and a wireless power receiver based on the amplitude of the detected transient current; and adjusting the output of the wireless power transmitter based on the calculated distance between the wireless power transmitter and the wireless power receiver. - View Dependent Claims (10, 11, 12, 13)
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14. A wireless power transmitter comprising:
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an alternating current-direct current (AC-DC) converter configured to receive AC power, and convert the AC power to DC voltage; a switch circuit configured to receive the DC voltage, convert the DC voltage to an AC voltage, and supply the AC voltage to a transmission resonator to supply wireless power to a reception resonator of a wireless power receiver; a detector configured to detect a transient event induced in the transmission resonator by the switch circuit; and a controller configured to; control the switch circuit to adjust a magnitude of the wireless power in response to a magnitude of the transient event being greater than or equal to a threshold, and control the AC-DC converter to adjust a magnitude of the DC voltage in response to the magnitude of the transient event being less than the threshold. - View Dependent Claims (15, 16, 17, 18)
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Specification