WIRELESS POWER TRANSMISSION SYSTEM, METHOD AND APPARATUS FOR TRACKING RESONANCE FREQUENCY IN WIRELESS POWER TRANSMISSION SYSTEM
First Claim
1. A device of a wireless power transmission system, comprising:
- a resonator configured to receive and output a power from another resonator of another device;
a power supply unit configured to provide, to a device load, the power output from the resonator;
a calibration load configured to receive the power output from the resonator in a calibration mode of the device to match resonance frequencies of the resonator and the other resonator; and
a controller configured to selectively connect the resonator to the power supply unit or the calibration load, based on whether the device operates in the calibration mode.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless power transmission system, a method and an apparatus for tracking a resonance frequency in the wireless power transmission system, are provided. A device of the wireless power transmission system includes a resonator configured to receive and output a power from another resonator of another device. The device further includes a power supply unit configured to provide, to a device load, the power output from the resonator. The device further includes a calibration load configured to receive the power output from the resonator in a calibration mode of the device to match resonance frequencies of the resonator and the other resonator. The device further includes a controller configured to selectively connect the resonator to the power supply unit or the calibration load, based on whether the device operates in the calibration mode.
33 Citations
20 Claims
-
1. A device of a wireless power transmission system, comprising:
-
a resonator configured to receive and output a power from another resonator of another device; a power supply unit configured to provide, to a device load, the power output from the resonator; a calibration load configured to receive the power output from the resonator in a calibration mode of the device to match resonance frequencies of the resonator and the other resonator; and a controller configured to selectively connect the resonator to the power supply unit or the calibration load, based on whether the device operates in the calibration mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A device of a wireless power transmission system, comprising:
-
a resonator configured to receive and output a power from another resonator of another device; a rectification unit configured to rectify an alternating current (AC) voltage of the power output from the resonator to generate and output a direct current (DC) voltage; a converter configured to adjust the DC voltage output from the rectification unit, and to provide, to a device load, an adjusted DC voltage; a calibration load configured to receive the DC voltage output from the rectification unit in a calibration mode of the device to match resonance frequencies of the resonator and the other resonator; and a controller configured to selectively connect the rectification unit to the converter or the calibration load, based on whether the device operates in the calibration mode. - View Dependent Claims (10, 11, 12)
-
-
13. A method of tracking a resonance frequency in a wireless power transmission system, comprising:
-
transmitting, by a device, a first request to another device to enter a calibration mode to match resonance frequencies of the device and the other device; receiving, from the other device, a first response to the first request that indicates that the other device operates in the calibration mode; transmitting, to the other device, a calibration power; detecting a reflected wave of the calibration power; and matching the resonance frequencies based on the reflected wave. - View Dependent Claims (14)
-
-
15. A method of tracking a resonance frequency in a wireless power transmission system, comprising:
-
transmitting, by a device, a first request to another device to enter a calibration mode to match resonance frequencies of the device and the other device; receiving, from the other device, a first response to the first request that indicates that the other device operates in the calibration mode; transmitting, to the other device, a calibration power; receiving, from the other device, an amount of the calibration power received in the other device; and matching the resonance frequencies of the device and the other device based on the amount of the calibration power received in the other device. - View Dependent Claims (16)
-
-
17. A method of tracking a resonance frequency in a wireless power transmission system, comprising:
-
receiving, by a device, a first request from another device to enter a calibration mode to match resonance frequencies of the other device and the device; entering the calibration mode; transmitting, to the other device, a first response to the first request that indicates that the device operates in the calibration mode; and receiving, from the other device, a calibration power, wherein the resonance frequencies are matched based on a reflected wave of the calibration power. - View Dependent Claims (18)
-
-
19. A method of tracking a resonance frequency in a wireless power transmission system, comprising:
-
receiving, by a device, a first request from another device to enter a calibration mode to match resonance frequencies of the other device and the device; entering the calibration mode; transmitting, to the other device, a first response to the first request that indicates that the device operates in the calibration mode; receiving, from the other device, a calibration power; and transmitting, to the other device, an amount of the calibration power received in the device, wherein the resonance frequencies are matched based on the amount of the calibration power received in the device. - View Dependent Claims (20)
-
Specification