Patents by Inventor Gyu-duk KIM
Gyu-duk KIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220200280Abstract: A distribution network management system includes a power generation device including a renewable energy power generation source, and is connected to a distribution network through a first node; a first distributed device including a first distributed resource, connected to the distribution network through a second node, and configured to receive first node information and power generation information from the power generation device and attempt to control the first distributed resource so that an overvoltage for the first node is resolved; and a second distributed device including a second distributed resource, connected to the distribution network through a third node which is located farther away from the first node than the second node, and configured to, when the first node information and the power generation information are received from the first distributed device, attempt to control the second distributed resource so that the overvoltage for the first node is resolved.Type: ApplicationFiled: October 28, 2021Publication date: June 23, 2022Applicant: Korea Institute of Energy ResearchInventors: Sea Seung OH, Su-Yong CHAE, Suk In PARK, Gyu Duk KIM, Seung Weon YU
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Patent number: 10031545Abstract: A power conversion system including: a first power conversion module configured to change a current (first module current) supplied to an output node, to monitor efficiency of the power conversion system according to the change in the first module current, and to determine a setting value of the first module current to increase the efficiency; and a second power conversion module configured to control a current (second module current) supplied to the output node according to a voltage (output voltage) formed at the output node.Type: GrantFiled: July 13, 2017Date of Patent: July 24, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Su Yong Chae, Jong Bok Baek, Seung Weon Yu, Gyu Duk Kim, Suk In Park
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Patent number: 9896349Abstract: The present invention provides a water purifying device that may include: an upper cover that is configured to have an inlet for liquid; two or more light source modules that are configured to include a light source that emits a UV ray; two or more light guide plates that are configured to guide, to the front, the UV ray that is incident through the lateral side thereof from the light source module to then be output; a purifying plate that is configured to provide a flow path through which liquid flows, and that is configured to provide a plate-type photocatalyst that is disposed on the flow path so that the UV ray emitted from the light guide plate reaches the plate-type photocatalyst in order to thereby purify the liquid; and a lower cover that is configured to have an outlet for the liquid.Type: GrantFiled: October 12, 2016Date of Patent: February 20, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Sukin Park, Jae Kyung Yoon, Seung Jae Lee, In Soo Ryu, Gyu Duk Kim
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Publication number: 20170369334Abstract: The present invention provides a water purifying device that may include: an upper cover that is configured to have an inlet for liquid; two or more light source modules that are configured to include a light source that emits a UV ray; two or more light guide plates that are configured to guide, to the front, the UV ray that is incident through the lateral side thereof from the light source module to then be output; a purifying plate that is configured to provide a flow path through which liquid flows, and that is configured to provide a plate-type photocatalyst that is disposed on the flow path so that the UV ray emitted from the light guide plate reaches the plate-type photocatalyst in order to thereby purify the liquid; and a lower cover that is configured to have an outlet for the liquid.Type: ApplicationFiled: October 12, 2016Publication date: December 28, 2017Inventors: Sukin PARK, Jae Kyung YOON, Seung Jae LEE, In Soo RYU, Gyu Duk KIM
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Patent number: 9837809Abstract: The present provides an arc detection apparatus that includes: a current sensor configured to sense the first current that flows through the first line of a system in which the influence of noise according to the operation is detected in the first frequency band; a frequency data creator configured to digitally process sensed values of the first current in the first time period and the second time period, respectively, in order to thereby create the first frequency data and the second frequency data for the first frequency band; and an arc determination unit configured to determine the possibility of the generation of an arc of the system according to comparison data between the first frequency data and the second frequency data.Type: GrantFiled: May 26, 2016Date of Patent: December 5, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Su Yong Chae, Seung Weon Yu, Jin Ju Park, Sea Shung Oh, Gyu Duk Kim, Suk In Park
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Patent number: 9637017Abstract: The present disclosure provides a charging system including: at least two charging devices including at least two output units configured to supply connected automobiles with charging power, a first bus electrically connected to the output units and configured to transfer charging power to the output units, and a power processing unit configured to process power, which is supplied from a power source, using a first capacity and supply the first bus with the processed power; and a second bus configured to connect a first bus of a first charging device and a first bus of a second charging device, wherein, when a total capacity of charging power supplied to automobiles connected to the first charging device exceeds the first capacity, a part or all of lacking capacity is supplied via the second bus.Type: GrantFiled: October 24, 2014Date of Patent: May 2, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Yoon Dong Sung, Su Bin Han, Sea Seung Oh, Su Yong Chae, Gyu Duk Kim, Seung Weon Yu, Yujin Song, ILoun Lee, Sukin Park
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Publication number: 20160351042Abstract: The present provides an arc detection apparatus that includes: a current sensor configured to sense the first current that flows through the first line of a system in which the influence of noise according to the operation is detected in the first frequency band; a frequency data creator configured to digitally process sensed values of the first current in the first time period and the second time period, respectively, in order to thereby create the first frequency data and the second frequency data for the first frequency band; and an arc determination unit configured to determine the possibility of the generation of an arc of the system according to comparison data between the first frequency data and the second frequency data.Type: ApplicationFiled: May 26, 2016Publication date: December 1, 2016Inventors: Su Yong CHAE, Seung Weon YU, Jin Ju PARK, Sea Shung OH, Gyu Duk KIM, Suk In PARK
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Publication number: 20150115891Abstract: The present disclosure provides a charging system including: at least two charging devices including at least two output units configured to supply connected automobiles with charging power, a first bus electrically connected to the output units and configured to transfer charging power to the output units, and a power processing unit configured to process power, which is supplied from a power source, using a first capacity and supply the first bus with the processed power; and a second bus configured to connect a first bus of a first charging device and a first bus of a second charging device, wherein, when a total capacity of charging power supplied to automobiles connected to the first charging device exceeds the first capacity, a part or all of lacking capacity is supplied via the second bus.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Yoon Dong SUNG, Su Bin HAN, Sea Seung OH, Su Yong CHAE, Gyu Duk KIM, Seung Weon YU, Yujin SONG, ILoun LEE, Sukin PARK
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Publication number: 20130003423Abstract: A multi-input bidirectional DC-DC converter with a high voltage conversion ratio is provided. The multi-input bidirectional DC-DC converter with a high voltage conversion ratio implements phase control loops independent from one another so as to realize independent control of charge and discharge in a plurality of energy storage modules, and thus a failure in one of energy storage modules does not affect the other energy storage modules. In addition, it is possible to easily add or remove a control loop that is controlled independently from other control loops.Type: ApplicationFiled: October 26, 2011Publication date: January 3, 2013Inventors: Yujin Song, Soo-Bin Han, Sukin Park, Hak-Geun Jeong, Su-Yong Chae, Gyu-Duk Kim, Seung-Weon Yu
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Publication number: 20130003424Abstract: A multi-phase interleaved bidirectional DC-DC converter with a high voltage conversion ratio is provided. The multi-phase interleaved bidirectional DC-DC converter with a high voltage conversion ratio allows effective control of charge/discharge in multi-energy storage modules including a battery cell module or a super capacitor module, which is characterized in low voltage and high current output. Accordingly, a high-efficiency bidirectional DC-DC converter for use in battery charge/discharge can be implemented.Type: ApplicationFiled: October 26, 2011Publication date: January 3, 2013Inventors: Yujin Song, Soo-Bin Han, Sukin Park, Hak-Geun Jeong, Su-Yong Chae, Gyu-Duk Kim, Seung-Weon Yu
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Publication number: 20120163035Abstract: Provided is power conversion technology for charge and discharge control of an energy storage module such as battery or super capacitor.Type: ApplicationFiled: December 28, 2010Publication date: June 28, 2012Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Yujin Song, Soo-Bin Han, Sukin Park, Hak-Geun Jeong, Su-Yong Chae, Gyu-Duk Kim, Seung-Weon Yu
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Publication number: 20120153729Abstract: Provided is technology for charge and discharge control of a plurality of energy storage modules having different properties. For achieving the technology, there is provided a multi-input bidirectional DC-DC converter including: a first bidirectional DC-DC converter including a first input unit which stores an input current from a first energy storage module, a primary-side first half-bridge which is connected to the first input unit and controls an input current from the first energy storage module, an output unit which includes an output capacitor, a secondary-side half-bridge which is connected to the output unit and controls the output voltage, and a first transformer whose primary side is connected to the primary-side first half-bridge, whose secondary side is connected to the secondary-side first half-bridge, and which transforms a voltage at the primary side or at the secondary side according to a power mode; and a n-th bidirectional DC-DC converter.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Yujin SONG, Soo-Bin Han, Sukin Park, Hak-Geun Jeong, Su-Yong Chae, Gyu-Duk Kim, Seung-Weon Yu
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Publication number: 20080108156Abstract: A method for fabricating a light emitting diode lamp in a simplified procedure, and a high-output LED, that has a simple structure and can exhibit improvement in heat release property, fabricated by using the method which includes the steps of coating an insulating layer on a substrate and etching the insulating layer using a mask pack, coating a conductive metal layer on the insulating layer, forming an electrode pattern and a recess, on which an LED chip is mounted, on the metal layer using the mask pack, attaching the LED chip to the top of the recess, connecting a wire to the electrode pattern, and mounting a reflector having a vertical opening hole around the LED chip on the substrate to reflect light emitted from the LED chip in all directions, and molding the top of the substrate from a transparent resin to cover the LED chip, the electrode pattern and the reflector.Type: ApplicationFiled: January 17, 2007Publication date: May 8, 2008Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Hak-geun JEONG, Bong-man JUNG, Soo-bin HAN, Yu-jin SONG, Suk-in PARK, Seung-won YU, Gyu-duk KIM