Patents Assigned to Kyungsung University Industry Cooperation Foundation
-
Publication number: 20240139151Abstract: The present invention relates to a composition including decursinol as an active ingredient for preventing or treating angina, arteriosclerosis, cerebral infarction, and hypertension. Poorly soluble decursinol was found to improve angina, arteriosclerosis, cerebral infarction, prostate hypertrophy, and diabetic hypertension by inhibiting the overgrowth of vascular endothelial cells, and is expected to be usable in the development of a composition for preventing or treating angina, arteriosclerosis, cerebral infarction, prostate hypertrophy, and diabetic hypertension.Type: ApplicationFiled: January 11, 2022Publication date: May 2, 2024Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Jae Seon KANG, Hyung Hoi KIM, Jae Sung PYO, Seong Jae LEE, Ye Jin HWANG, Hyeong Soo KIM, Jae Ki CHOI
-
Publication number: 20230339870Abstract: The present disclosure relates to a pharmaceutical composition containing a cinnamic amide derivative that activates FXR or an isomer, solvate, or pharmaceutically acceptable salt thereof, and a method for preparing the same.Type: ApplicationFiled: October 28, 2020Publication date: October 26, 2023Applicants: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATION, PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATIONInventors: Jae-Hwan KWAK, Young-Suk JUNG, Doyoung KWON, Min Woo KIM, Sou Hyun KIM
-
Publication number: 20200246407Abstract: Disclosed are uses of ginseng saponin, which contains at least 90% of a compound K, Rd, F2, and Rg3 as a main ingredient and has effects in extending the lifespan of the cell, promoting the cell differentiation, increasing the number of red blood cells, and reducing the triglycerides by extracting, heat-treating, and enzyme-converting the ginseng saponin to prepare active saponins Rd, F2, and Rg3 including a compound K.Type: ApplicationFiled: April 22, 2020Publication date: August 6, 2020Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Jae Seon KANG, Bo Suel KIM, Heyong-Soo KIM, Gyu-Jin RHO, Sin-Ja BAE, Seo Hyun LEE, Jong Jin PARK, Choel-Min KIM
-
Publication number: 20180369309Abstract: Disclosed are uses of ginseng saponin, which contains at least 90% of a compound K, Rd, F2, and Rg3 as a main ingredient and has effects in extending the lifespan of the cell, promoting the cell differentiation, increasing the number of red blood cells, and reducing the triglycerides by extracting, heat-treating, and enzyme-converting the ginseng saponin to prepare active saponins Rd, F2, and Rg3 including a compound K.Type: ApplicationFiled: October 28, 2016Publication date: December 27, 2018Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Jae Seon KANG, Bo Suel KIM, Heyong-Soo KIM, Gyu-Jin RHO, Sin-Ja BAE, Seo Hyun LEE, Jong Jin PARK, Choel-Min KIM
-
Patent number: 9006948Abstract: Disclosed is a hybrid pole bearingless switched reluctance motor (BLSRM). The BLSRM includes a stator provided with windings, a rotor rotating about an axis when current is conducted to the windings. The rotor includes a plurality of rotor poles extending radially outward, and the stator includes a plurality of stator poles extending radially inward. The windings include suspending windings to generate radial force for the rotor and torque windings to generate torque. The suspending windings are mutually separated from the torque windings. Through the use of the hybrid pole BLSRM, a stator pole generating the radial force can be controlled independently from the stator pole generating the torque by separately arranging the stator pole generating the radial force and the stator pole generating torque based on the analysis of radial force and torque characteristics according to the position of the stator poles.Type: GrantFiled: July 14, 2009Date of Patent: April 14, 2015Assignee: Kyungsung University Industry Cooperation FoundationInventors: Jin Woo Ahn, Dong Hee Lee, Huijun Wang
-
Patent number: 8541972Abstract: Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error ?err based on a reference speed ?ref and an actual speed ?act; calculating a controller output Trm by using the speed error ?err as an input of a PI control and an operation of a compensated torque Tcom; and determining a torque variation based on the controller output Trm and a reference torque Tref and operating the torque variation in relation to an anti-windup gain Ka to use torque variation as an input of an integral (I) control. The method suppresses the speed ripple by compensating for the torque ripple through a controller which calculates the compensated torque by taking the signs of the speed error and the differential speed error into consideration.Type: GrantFiled: December 8, 2011Date of Patent: September 24, 2013Assignee: Kyungsung University Industry Cooperation FoundationInventors: Dong Hee Lee, Jin Woo Ahn
-
Patent number: 8525489Abstract: A system for directly and instantaneously controlling the exciter of a generator. A voltage error calculator calculates a voltage error of output voltage of the generator which is regulated by an instruction voltage and a time constant. A switching signal generator generates switching signals in response to the voltage error. An exciter controller controls the exciter in response to the switching signals. Thus, the system can induce the maximum response characteristic of a power converter only by setting the time constant of a controller without a complicated design for determining gains of the controller. Further, the system can considerably inhibit overshoot from occurring in a transient response state.Type: GrantFiled: October 2, 2008Date of Patent: September 3, 2013Assignee: Kyungsung University Industry Cooperation FoundationInventors: Jinwoo Ahn, Donghee Lee
-
Publication number: 20130113408Abstract: Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error ?err based on a reference speed ?ref and an actual speed ?act; calculating a controller output Trm by using the speed error ?err as an input of a PI control and an operation of a compensated torque Tcom; and determining a torque variation based on the controller output Trm and a reference torque Tref and operating the torque variation in relation to an anti-windup gain Ka to use torque variation as an input of an integral (I) control. The method suppresses the speed ripple by compensating for the torque ripple through a controller which calculates the compensated torque by taking the signs of the speed error and the differential speed error into consideration.Type: ApplicationFiled: December 8, 2011Publication date: May 9, 2013Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Dong Hee LEE, Jin Woo AHN
-
Publication number: 20130088905Abstract: Disclosed is a dead-time compensation method of a 3-phase inverter using an SVPWM scheme. The dead-time compensation method includes generating a switching signal having dead-time with respect to the power semiconductor switches of the upper and lower arms in order to obtain a predetermined output through the SVPWM scheme, detecting medium phase current from each phase current output through the switching signal, determining polarity of the medium phase current, and generating a switching signal by calculating switching time in order to compensate for time to apply effective voltage according to the polarity of the medium phase current. Through the dead-time compensation method, the distortion of the output voltage and the reduction of voltage having a fundamental wave in the output voltage, which are caused by the dead-time, are minimized through the switching of compensating for the time to apply effective voltage based on the polarity of the load current.Type: ApplicationFiled: November 14, 2011Publication date: April 11, 2013Applicants: AUTO POWER CO., LTD., KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Dong Hee LEE, Hong Min KIM
-
Patent number: 8350254Abstract: A polymer electroluminescent device is provided. The device includes an anode, a light-emitting layer, a cation-containing water-soluble polymer layer and a cathode formed in this order on a substrate wherein the cation-containing water-soluble polymer layer is formed by wet coating. The cation-containing water-soluble polymer layer as a secondary thin film layer is not dissolved in a solvent for the formation of the underlying light-emitting layer to prevent intermixing between the two layers, thereby enabling the formation of a multilayer structure by wet coating. In addition, the cation-containing water-soluble polymer layer attracts electrons injection from the cathode by an attractive Coulomb force to effectively increase the mobility of the electrons while blocking high-mobility holes from the anode at an interface between the light-emitting layer and the water-soluble layer. Further provided is a method for fabricating the electroluminescent device.Type: GrantFiled: February 12, 2008Date of Patent: January 8, 2013Assignee: Kyungsung University Industry Cooperation FoundationInventors: Dong Kyu Park, Hyung Suk Woo, Tae-Woo Kwon, Seong-Jin Cho
-
Publication number: 20120068558Abstract: Disclosed is a hybrid pole bearingless switched reluctance motor (BLSRM). The BLSRM includes a stator provided with windings, a rotor rotating about an axis when current is conducted to the windings. The rotor includes a plurality of rotor poles extending radially outward, and the stator includes a plurality of stator poles extending radially inward. The windings include suspending windings to generate radial force for the rotor and torque windings to generate torque. The suspending windings are mutually separated from the torque windings. Through the use of the hybrid pole BLSRM, a stator pole generating the radial force can be controlled independently from the stator pole generating the torque by separately arranging the stator pole generating the radial force and the stator pole generating torque based on the analysis of radial force and torque characteristics according to the position of the stator poles.Type: ApplicationFiled: July 14, 2009Publication date: March 22, 2012Applicant: Kyungsung University Industry Cooperation FoundationInventors: Jin Woo Ahn, Dong Hee Lee, Huijun Wang
-
Publication number: 20110069515Abstract: Disclosed is an active boost power converter for driving a single-phase SRM, capable of rapidly establishing excitation current in the excitation mode and reducing tail current and negative torque in the demagnetization mode under the high-speed operation of the SRM. The active boost power converter includes a boost module and a converter module connected to the boost module. The boost module includes first and second capacitors, first and second diodes and a switch device turned on/off to connect the first and second capacitors to each other in series or parallel. The switch device includes an insulated gate bipolar transistor (IGBT). The power converter is operated with first and second input modes and first and second output modes. Voltage of the first capacitor is equal to dc-link voltage and first and second capacitors are controlled to be operated in series or parallel by simply controlling the IGBT.Type: ApplicationFiled: September 16, 2010Publication date: March 24, 2011Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Jianing LIANG, Jin Woo AHN, Dong Hee LEE
-
Patent number: 7902787Abstract: Disclosed are a driving circuit for a single-phase SRM and a driving method thereof. The driving circuit for the single-phase SRM includes a switched reluctance motor, a voltage source which supplies energy to the switched reluctance motor, and an inverter circuit which is connected to the switched reluctance motor in parallel so as to temporarily store energy of the voltage source, and then supply the energy to the switched reluctance motor.Type: GrantFiled: April 19, 2007Date of Patent: March 8, 2011Assignee: Kyungsung University Industry Cooperation FoundationInventors: Jinwoo Ahn, Donghee Lee
-
Publication number: 20100201329Abstract: A system for directly and instantaneously controlling the exciter of a generator. A voltage error calculator calculates a voltage error of output voltage of the generator which is regulated by an instruction voltage and a time constant. A switching signal generator generates switching signals in response to the voltage error. An exciter controller controls the exciter in response to the switching signals. Thus, the system can induce the maximum response characteristic of a power converter only by setting the time constant of a controller without a complicated design for determining gains of the controller. Further, the system can considerably inhibit overshoot from occurring in a transient response state.Type: ApplicationFiled: October 2, 2008Publication date: August 12, 2010Applicant: KYUNGSUNG UNIVERSITY INDUSTRY COOPERATION FOUNDATIONInventors: Jinwoo Ahn, Donghee Lee