Wireless power transmitter and method of controlling the same
First Claim
1. A method for controlling a wireless power transmitter transmitting wireless power to a wireless power receiver, the method comprising:
- generating first differential signals by using a signal generated by a signal generating unit of the wireless power transmitter;
outputting second differential signals by amplifying the first differential signals;
wirelessly transmitting power by applying the second differential signals to a resonating unit of the wireless power transmitter;
detecting at least one of amplitudes or phases of the second differential signals; and
in response to identifying that at least one of an amplitude difference or a phase difference between the second differential signals is out of a reference range, adjusting at least one of amplitudes or phases of the first differential signals using a variable resistor in the wireless power transmitter such that the amplitudes of the second differential signals are matched or the second differential signals are 180 degrees out of phase.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for controlling a wireless power transmitter transmitting wireless power to a wireless power receiver is provided. The method includes generating a first differential signal for the wireless power transmitted to the wireless power receiver, measuring a second differential signal corresponding to the first differential signal applied to a resonating unit of the wireless power transmitter, and detecting at least one of an amplitude and a phase of the second differential signal according to a measurement result, and controlling at least one of the amplitude and the phase of the second differential signal according to a detect result, and controlling the wireless power transmitter based on information on the controlled second differential signal.
6 Citations
18 Claims
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1. A method for controlling a wireless power transmitter transmitting wireless power to a wireless power receiver, the method comprising:
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generating first differential signals by using a signal generated by a signal generating unit of the wireless power transmitter; outputting second differential signals by amplifying the first differential signals; wirelessly transmitting power by applying the second differential signals to a resonating unit of the wireless power transmitter; detecting at least one of amplitudes or phases of the second differential signals; and in response to identifying that at least one of an amplitude difference or a phase difference between the second differential signals is out of a reference range, adjusting at least one of amplitudes or phases of the first differential signals using a variable resistor in the wireless power transmitter such that the amplitudes of the second differential signals are matched or the second differential signals are 180 degrees out of phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transmitter comprising:
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a signal generating unit configured to generate a signal; a signal dividing unit configured to output first differential signals by using the signal generated by the signal generating unit; an amplifier configured to output second differential signals by amplifying the first differential signals; a resonating unit configured to wirelessly transmit power by being applied to the second differential signals; an alternating current (AC) measuring unit configured to measure the second differential signals applied to the resonating unit; and a controller configured to; control the AC measuring unit to detect at least one of amplitudes or phases of the second differential signals, and in response to identifying that at least one of an amplitude difference or a phase difference between the second differential signals is out of a reference range, control the signal dividing unit to adjust at least one of amplitudes or phases of the first differential signals using a variable resistor in the wireless power transmitter such that the amplitudes of the second differential signals are matched or the second differential signals are 180 degrees out of phase. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification