Resonance power transmission system based on power transmission efficiency
First Claim
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1. A resonance power transmitter comprising:
- a source resonator configured to transfer a resonance power to one or more resonance power receivers; and
a source controller configured to;
determine a number of the one or more resonance power receivers that are within a distance to receive the resonance power,measure a reflected power corresponding to the resonance power, andcontrol voltage supplied to a power converter based on the measured reflected power and the number of the one or more resonance power receivers;
wherein the source controller is further configured to discretely increase the voltage to three or more levels, in response to an increase in the number of the one or more resonance power receivers.
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Abstract
A resonance power transmission system for controlling a supply voltage of a power converter based on power transmission efficiency is provided. According to an aspect, a resonance power transmitter configured to transmit resonance power to one or more resonance power receivers may include: a voltage controller configured to receive an input signal and to output voltage of a predetermined level; a source controller configured to control a signal level of the DC voltage based the number of resonance power receivers.
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Citations
14 Claims
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1. A resonance power transmitter comprising:
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a source resonator configured to transfer a resonance power to one or more resonance power receivers; and a source controller configured to; determine a number of the one or more resonance power receivers that are within a distance to receive the resonance power, measure a reflected power corresponding to the resonance power, and control voltage supplied to a power converter based on the measured reflected power and the number of the one or more resonance power receivers; wherein the source controller is further configured to discretely increase the voltage to three or more levels, in response to an increase in the number of the one or more resonance power receivers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling power conversion in a resonance power transmitter, the method comprising:
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determining a number of resonance power receivers; measuring a reflected power corresponding to a resonance power; and controlling voltage supplied to a power converter based on the measured reflected power and the number of the resonance power receivers, wherein; the voltage is discretely increased to three or more levels, in response to an increase in the number of the resonance power receivers, and the determining comprises determining the number of resonance power receivers that are within a distance to receive the resonance power. - View Dependent Claims (10, 11, 12, 13)
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14. A method of controlling power conversion in a resonance power transmitter, the method comprising:
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determining a number of resonance power receivers; measuring a reflected power corresponding to a resonance power; and controlling voltage supplied to a power converter based on the measured reflected power and the number of the resonance power receivers, wherein; the controlling comprises discretely increasing the voltage to three or more levels in response to an increase in the number of the resonance power receivers, and the controlling comprises linearly controlling the voltage, in response to the number of the resonance power receivers remaining unchanged, and an amount of the reflected power being changed.
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Specification