Patents by Inventor Ho-Joon Shin
Ho-Joon Shin 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: 20200184746Abstract: Disclosed herein is a fault diagnosis apparatus of a rapid charging system for a vehicle including an external device configured to exchange power with a vehicle battery, a power transfer unit including a three-phase motor, an inverter connected to the battery in parallel and connected to the three-phase motor, and one or more relays connected to the three-phase motor and configured to transfer power between the external device and the battery, and a controller configured to control the on and off functions of the relay, to control driving of the inverter to generate voltages applied to one end of each of the relays, and to diagnose fault of relays by comparing voltages of both ends of the relays while turning the relays on/off.Type: ApplicationFiled: April 22, 2019Publication date: June 11, 2020Inventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Publication number: 20200127592Abstract: An apparatus for controlling an inverter to drive a motor includes: a current control processor generating a voltage command for generating d/q axis current detection values, which are obtained by measuring current supplied to the motor, to follow a d/q axis current command for driving the motor, the current control processor converting the voltage command, which is sampled according to a sampling frequency generated based on a voltage vector phase of the voltage command, into a voltage vector corresponding to a point on each vertex and each side of a hexagon in a voltage vector diagram to apply a resulting value to the inverter driving the motor; and a sample frequency computing processor computing the sampling frequency based on the voltage vector phase of the voltage command and a reference number of sampling times during one rotation period of the motor.Type: ApplicationFiled: November 26, 2018Publication date: April 23, 2020Inventors: Yong Jae LEE, Mu Shin Kwak, Joo Young Park, Jae Ho Hwang, Ho Joon Shin, Sung Kyu Kim, Su Hyun Bae
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Patent number: 10630217Abstract: An apparatus for controlling an inverter for driving a motor including a processor which includes: a current processor configured to generate a voltage command for allowing a current detection value, generated by measuring a current provided from an inverter to a motor, to follow a current command for driving the motor; a voltage modulator configured to generate a pulse width modulation signal for controlling on and off states of a switching element within the inverter with a predetermined switching frequency based on the voltage command; and a frequency determining processor configured to randomly change the switching frequency based on driving information of the motor.Type: GrantFiled: November 21, 2018Date of Patent: April 21, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Yong Jae Lee, Tae Won Ha, Su Hyun Bae, Ho Joon Shin, Sung Kyu Kim, Joo Young Park
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Publication number: 20200028460Abstract: An apparatus for controlling an inverter for driving a motor including a processor which includes: a current processor configured to generate a voltage command for allowing a current detection value, generated by measuring a current provided from an inverter to a motor, to follow a current command for driving the motor; a voltage modulator configured to generate a pulse width modulation signal for controlling on and off states of a switching element within the inverter with a predetermined switching frequency based on the voltage command; and a frequency determining processor configured to randomly change the switching frequency based on driving information of the motor.Type: ApplicationFiled: November 21, 2018Publication date: January 23, 2020Inventors: Yong Jae LEE, Tae Won HA, Su Hyun BAE, Ho Joon SHIN, Sung Kyu KIM, Joo Young PARK
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Publication number: 20200028462Abstract: An apparatus for controlling an inverter for driving a motor includes a processor which includes: a current processor for generating a voltage command for causing a current detection value obtained by measuring a current supplied from the inverter to the motor to follow a current command for driving the motor; a voltage modulator for generating a pulse width modulation signal for controlling on and off states of switching elements in the inverter with a predetermined switching frequency based on the voltage command; and a frequency determining processor for setting a frequency change range within which the switching frequency will be randomly changed and randomly determining the switching frequency within the frequency change range when a random pulse width modulation method is applied to control of the inverter.Type: ApplicationFiled: December 4, 2018Publication date: January 23, 2020Inventors: Sung Kyu Kim, Yong Jae Lee, Su Hyun Bae, Ho Joon Shin, Tae Won Ha, Joo Young Park
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Publication number: 20200021227Abstract: An apparatus for controlling an inverter for a motor driving includes: a current controller configured to generate a d/q-axis voltage reference for allowing a d/q-axis current detection value, which is obtained by measuring a current supplied from the inverter to the motor, to converge on the d/q-axis current reference for driving the motor, and a voltage modulator configured to control switching of the inverter by selectively applying one among a plurality of predetermined pulse width modulations (PWM) based on a point at which the d/q-axis voltage reference is located in a hexagonal space voltage vector diagram.Type: ApplicationFiled: November 20, 2018Publication date: January 16, 2020Inventors: Yong Jae LEE, Joo Young PARK, Ho Joon SHIN, Sung Kyu KIM, Su Hyun BAE
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Patent number: 10498276Abstract: An apparatus for controlling a motor of a vehicle includes: a current controller generating a voltage instruction for driving the motor; a signal generator generating a magnetic pole discrimination reference signal that is combined with the voltage instruction; an inverter driving the motor on the basis of a corrected voltage instruction obtained by comparing the voltage instruction and the magnetic pole discrimination reference signal; and a processor including a control logic for deriving a response component to the magnetic pole discrimination reference signal from a driving current transferred to the motor from the inverter, and for determining a polarity of the rotor of the motor on the basis of the response component.Type: GrantFiled: November 5, 2018Date of Patent: December 3, 2019Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Chae Duck Chon, Heon Young Kwak, Ho Joon Shin
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Patent number: 10498157Abstract: A charging system for improving a power factor and a current quality in a grid stage is provided. The charging system includes a rectifying circuit that is configured to rectify a grid power and a converter that is configured to receive a voltage-current rectified by the rectifying circuit and convert the voltage-current into a charge voltage-current to be provided to a battery. A capacitor is connected across a connection end of the rectifying circuit and the converter. The converter includes a first high frequency switching circuit, a transformer, and a second high frequency switching circuit.Type: GrantFiled: December 12, 2017Date of Patent: December 3, 2019Assignees: Hyundai Motor Company, Kia Motors Corporation, Seoul National University R&DB FoundationInventors: Ho Joon Shin, Mu Shin Kwak, Young Kook Lee, Sung Kyu Kim, Jung Ik Ha, Yong Su Han
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Publication number: 20190344671Abstract: A method for driving a hybrid vehicle includes determining, by a transmission controller, whether the hybrid vehicle is driven in a sensorless control mode or not, wherein in a sensorless control mode in which an estimated rotor position value determined based on electric current and voltage of a drive motor is used to control the drive motor, without using information detected by a stator position sensor provided in the drive motor of the hybrid vehicle, a transmission is used to enable the drive motor to operate in an area in which the precision of a sensorless control is high.Type: ApplicationFiled: October 29, 2018Publication date: November 14, 2019Inventors: Ho Joon SHIN, Chae Duck CHON, HeonYoung KWAK
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Patent number: 10476419Abstract: A dual inverter control method is capable of improving power efficiency of an inverter and a motor by controlling a dual inverter through 6-step control to apply a voltage to the motor in a motor driving system using the dual inverter. The dual inverter control method for controlling first and second inverters having output terminals commonly connected to a motor includes comparing all voltage commands for driving the motor with the magnitude of a DC voltage commonly applied to the first and second inverters; and generating a first voltage command with respect to an output of the first inverter and a second voltage command with respect to an output of the second inverter by selectively applying high gain over voltage modulation (HOVM) depending on a comparison result.Type: GrantFiled: September 13, 2017Date of Patent: November 12, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Joo Young Park, Mu Shin Kwak, Ho Joon Shin, Su Hyun Bae, Jun Mo An, Sung Kyu Kim
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Patent number: 10464867Abstract: The present application relates to a distillation device. The distillation device of the present application can minimize energy loss occurring in a purification process of the olefin monomer, the solvent, and the raw material including, for example, 1-octene, iso-octene, and n-hexane, used in a polymerization process of the polyolefin elastomer, and can increase economic efficiency by isolating a high-purity product.Type: GrantFiled: November 2, 2015Date of Patent: November 5, 2019Assignee: LG CHEM, LTD.Inventors: Sung Kyu Lee, Ho Joon Shin
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Publication number: 20190315234Abstract: A charging system for a vehicle includes: a power transmitter transmitting power for charging a battery of a vehicle; a charger including a three-phase motor and inverter, and receiving the power from the power transmitter; an input voltage calculating processor selecting any one of a plurality of predetermined duty ratios and calculating a value of an input voltage supplied to the charger based on the selected duty ratio and a voltage value of the battery of the vehicle; an input current calculating processor calculating a value of an input current based on the calculated value of the input voltage and a value of the power transmitted by the power transmitter; a power transmission controller instructing the calculated input current to be input to the charger; and a charging controller instructing the battery of the vehicle to be charged.Type: ApplicationFiled: October 23, 2018Publication date: October 17, 2019Inventors: Ho Joon SHIN, Joo Young PARK, Yong Jae LEE, Sung Kyu KIM, Su Hyun BAE
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Publication number: 20190190427Abstract: A method and a system for controlling a motor for a vehicle are provided. The vehicle is capable of being continuously driven by controlling the motor based on position information of a rotor derived using a sensorless estimation algorithm in the event of a failure of a position sensor of a motor rotor while the vehicle is being driven.Type: ApplicationFiled: October 9, 2018Publication date: June 20, 2019Inventors: Heon Young Kwak, Chae Duck Chon, Ho Joon Shin
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Publication number: 20190148965Abstract: A charging system for improving a power factor and a current quality in a grid stage is provided. The charging system includes a rectifying circuit that is configured to rectify a grid power and a converter that is configured to receive a voltage-current rectified by the rectifying circuit and convert the voltage-current into a charge voltage-current to be provided to a battery. A capacitor is connected across a connection end of the rectifying circuit and the converter. The converter includes a first high frequency switching circuit, a transformer, and a second high frequency switching circuit.Type: ApplicationFiled: December 12, 2017Publication date: May 16, 2019Inventors: Ho Joon Shin, Mu Shin Kwak, Young Kook Lee, Sung Kyu Kim, Jung Ik Ha, Yong Su Han
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Patent number: 10256754Abstract: An apparatus for compensating for a position error of a resolver has a controller which is configured to: receive position information of a rotor of a motor, which is detected by the resolver, to measure a first position error, convert the first position error to a second position error at an electrical angular velocity of 0, and to store the second position error; receive a current electrical angular velocity and the second position error, convert the second position error to a third position error at the current electrical angular velocity, and compensate for the third position error; and perform determination of false position error compensation when a magnitude of a ripple at an electrical angular velocity, which is measured after the third position error has been compensated for, is equal to or greater than a reference magnitude.Type: GrantFiled: December 4, 2017Date of Patent: April 9, 2019Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Joo Young Park, Ho Joon Shin, Jun Mo An, Sung Kyu Kim, Su Hyun Bae
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Patent number: 10243388Abstract: Disclosed herein is a charging system using a wound rotor synchronous motor, capable of increasing a battery charging capacity while reducing the volume, weight, and/or cost of a vehicle increased due to an on-vehicle charging circuit. The charging system includes an inverter converting a DC output of a battery into a plurality of AC signals having different phases, a wound rotor synchronous motor having a plurality of stator coils, to which the AC signals having different phases are respectively input, and a field coil forming a mutual inductance with the stator coils, the field coil being installed in a rotor to form a magnetic flux using the DC output of the battery, and a controller allowing the battery and the field coil to be insulated from each other in a charge mode in which electricity from a grid is applied to the field coil of the wound rotor synchronous motor.Type: GrantFiled: December 16, 2016Date of Patent: March 26, 2019Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Ho Joon Shin, Mu Shin Kwak, Young Kook Lee, Sung Kyu Kim, Jung Ik Ha, Yong Su Han
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Patent number: 10236707Abstract: Disclosed herein is a charging system using a wound rotor synchronous motor (WRSM), capable of reducing volume, weight, and cost of a vehicle increased due to an on-board charging circuit and increasing a battery charge capacity. The charging system using a wound rotor synchronous motor (WRSM) includes an inverter converting power of a battery into alternating current (AC) powers having a plurality of different phases, a WRSM having a plurality of stator coils each receiving AC power of a different phase and a field coil forming mutual inductance with the plurality of stator coils and installed in a rotor to form a magnetic flux using power of the battery, and a controller controlling the battery side and the field coil side are insulated from each other in a charge mode in which grid power is applied to the field coil side of the WRSM.Type: GrantFiled: December 16, 2016Date of Patent: March 19, 2019Assignees: HYUNDAI MOTOR COMPANY, KIA Motors Corporation, Seoul National University R&DB FoundationInventors: Ho Joon Shin, Mu Shin Kwak, Sung Kyu Kim, Young Kook Lee, Jung Ik Ha, Yong Jae Lee, Yong Su Han
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Publication number: 20190058422Abstract: An apparatus for compensating for a position error of a resolver has a controller which is configured to: receive position information of a rotor of a motor, which is detected by the resolver, to measure a first position error, convert the first position error to a second position error at an electrical angular velocity of 0, and to store the second position error; receive a current electrical angular velocity and the second position error, convert the second position error to a third position error at the current electrical angular velocity, and compensate for the third position error; and perform determination of false position error compensation when a magnitude of a ripple at an electrical angular velocity, which is measured after the third position error has been compensated for, is equal to or greater than a reference magnitude.Type: ApplicationFiled: December 4, 2017Publication date: February 21, 2019Inventors: Joo Young PARK, Ho Joon SHIN, Jun Mo AN, Sung Kyu KIM, Su Hyun BAE
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Patent number: 10186940Abstract: A charging system is provided. The charging system includes an inverter, a wound rotor synchronous motor that has at least one stator coil supplied with power converted by the inverter and a rotor having a plurality of field coils, and a switching circuit unit that is configured to selectively supply power to the plurality of field coils. Additionally, a controller is configured to operate the switching circuit unit to supply power from the battery to at least one of the plurality of field coils when the wound rotor synchronous motor operates as a motor and isolate the field coils from the battery and operate the switching circuit unit to supply grid power to a portion of the field coils when the wound rotor synchronous motor is charging when the wound rotor synchronous motor supplies the grid power to the field coil side to charge the battery.Type: GrantFiled: November 30, 2017Date of Patent: January 22, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Mu Shin Kwak, Su Hyun Bae, Jun Mo An, Sung Kyu Kim, Joo Young Park
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Publication number: 20180358875Abstract: A charging system is provided. The charging system includes an inverter, a wound rotor synchronous motor that has at least one stator coil supplied with power converted by the inverter and a rotor having a plurality of field coils, and a switching circuit unit that is configured to selectively supply power to the plurality of field coils. Additionally, a controller is configured to operate the switching circuit unit to supply power from the battery to at least one of the plurality of field coils when the wound rotor synchronous motor operates as a motor and isolate the field coils from the battery and operate the switching circuit unit to supply grid power to a portion of the field coils when the wound rotor synchronous motor is charging when the wound rotor synchronous motor supplies the grid power to the field coil side to charge the battery.Type: ApplicationFiled: November 30, 2017Publication date: December 13, 2018Inventors: Ho Joon Shin, Mu Shin Kwak, Su Hyun Bae, Jun Mo An, Sung Kyu Kim, Joo Young Park