University-Industry Cooperation Group of Kyung Hee University

Korea Advanced Institute of Science and Technology

Bom Son Lee

Seung Young Ahn

Gun Young Kim

Bum Jin Park

Dong Ryul Park

Dong Hyun Kim

Jun Ho Lee

Dong Wook Kim

Se Jin Kim

Joon Hwan Kim

Een Kee Hong

Joung Ho Kim

Jong Wook Kim

Sang Woong Yoon

Ka Ram Hwang

Se Hun Na

Sung Youn Hwang

Ju Hwan Lim

Sung Ryul Huh

Yu Jun Shin

Seong Ho Woo

Jae Won Rhee

Chang Min Lee

Jae Hyoung Park

Hong Kyun Kim

Disclosed is a wireless power transmission system including a first circuit comprising a transmitting coil for transmitting power; and a second circuit comprising a shielded coil, wherein, in the transmitting coil and the shielded coil, frequency division wherein an impedance magnitude of the second circuit is minimized at a first frequency smaller than a resonant frequency of the second circuit and a second frequency larger than the resonant frequency of the second circuit occurs, and inductive coupling wherein the first frequency is larger than a fundamental frequency of the first circuit and the second frequency is smaller than a third high frequency of the second circuit.

Wireless power transmission system

Disclosed a wireless power transfer system configured to selectively drive at least one transmitting coil among transmitting coils that are included in a transmitter; and an operation method of the wireless power transfer system, and more particularly, to a technology of verifying a coupling coefficient between each of transmitting coils and a receiving coil when the receiving coil is located on the transmitting coils and selectively driving at least one transmitting coil among the transmitting coils based on the verified coupling coefficient. According to an embodiment of the present disclosure, the wireless power transfer system includes a transmitter including the transmitting coils; a receiver including a receiving coil configured to receive wireless power from at least one transmitting coil among the transmitting coils; and a controller configured to verify a coupling coefficient between each of the transmitting coil and the receiving coil and selectively drive the at least one transmitting coil based on the verified coupling coefficient.

Wireless power transfer system for selectively driving at least one transmitting coil among transmitting coils and operation method thereof

Disclosed is a wireless power transmission system including a microstrip patch antenna. More particularly, a microstrip patch antenna according to an embodiment of the present disclosure includes a substrate, a patch disposed on the substrate, and a plurality of protrusions with a conical shape disposed on the patch.

Wireless power transmission system using patch antenna

Disclosed are a microrobot propulsion apparatus based on wireless power transmission and a method of manufacturing the same. The microrobot propulsion apparatus according to one embodiment of the present disclosure may include a coil part for outputting a time-varying magnetic field or a static magnetic field applied to a microrobot including a coil for receiving power and a coil for an electromagnet, and a multipurpose inverter including a static magnetic field path portion allowing the coil part to output the static magnetic field and a time-varying magnetic field path portion allowing the coil part to output the time-varying magnetic field.

Microrobot propulsion apparatus based on wireless power transfer including multipurpose inverter and method of manufacturing the same

Disclosed are a magnetic field generating apparatus and a method of generating a magnetic field using the same. A magnetic field generating apparatus according to an embodiment of the present disclosure includes a coil part configured to generate a magnetic field transmitted to the target to which wireless power is to be supplied; a first ferrite member configured to extend in the vicinity of the coil part a bar shape and penetrate an inner peripheral surface of the coil part; and a second ferrite member configured to extend in a dome shape in the vicinity of the coil part, surround the coil part, include an opening formed along the magnetic field transmission path.

Magnetic field generating apparatus having cannon shape and magnetic field generation method thereof

Disclosed are a wireless charging pad including a plurality of small power transmission coils and a device for and a method of driving the wireless charging pad. More particularly, the wireless charging apparatus includes a driving controller configured to generate a first control signal so as to apply a first driving voltage having a first phase to power transmission coils to be driven matching a device to be charged among the small power transmission coils and generate a second control signal so as to apply a second driving voltage having a phase opposite to the first phase to power transmission coils surrounding the power transmission coils to be driven; and a coil driver configured to apply the first and second driving signals to a wireless charging pad.

Wireless charging pad including plurality of small power transmission coils and device for and method of driving wireless charging pad in wireless power transmission system

Disclosed is a wireless power transmission system using a meta-structure transmission line capable of performing beam steering. The wireless power transmission device using a meta-structure transmission line capable of performing beam steering includes a beam steerer including a meta-structure transmission line constituted of a plurality of single cells; a controller configured to control an operation mode and beam scanning of the beam steerer; and a power supply configured to supply power to the beam steerer under control of the controller.

Wireless power transmission system using meta-structure transmission line capable of performing beam steering

Growing community of inventors

Yongin-si, South Korea

Bom Son Lee