Wireless power transmission system, and method of controlling resonance impedance and resonance frequency of wireless power transmission system

摘要

A wireless power transmission system, and a method for controlling a resonance impedance and a resonance frequency of the wireless power transmission system are provided. According to one aspect, a wireless power transmitter may include: a power generator configured to generate tracking power using a resonance frequency, the tracking power being used for a resonance frequency tracking; a source resonator configured to transmit the tracking power to a target resonator; a mismatching detector configured to detect a mismatching between the target resonator and the source resonator; and a controller configured to adjust the resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator.

主权项

1. A wireless power transmitter comprising:
a power generator configured to generate a first power for a resonance impedance tracking or a resonance frequency tracking, and a second power for charging target devices; a source resonator configured to transmit the first power to a target resonator; a communication unit configured to receive, from a wireless power receiver, information on an amount of a received power according to transmission of the first power; and a controller configured to detect a mismatching between the target resonator and the source resonator, based on an amount of the first power, and the received information, and to adjust a resonance frequency, or an impedance of a repeater resonator when the mismatching is detected, the repeater resonator being used to perform an impedance matching between the target resonator and the source resonator, and wherein the source resonator is further configured to transmit the second power to the target resonator based on the adjusted resonance frequency, or the adjusted impedance of the repeater resonator.