Patents by Inventor Hong Geuk PARK
Hong Geuk PARK 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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Patent number: 11403894Abstract: 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: GrantFiled: April 22, 2019Date of Patent: August 2, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Patent number: 11351870Abstract: A fault diagnosis method of a power electric system for a vehicle may include driving an inverter to output an output voltage command for fault detection; measuring a current input to each phase of a motor connected to the inverter; measuring a voltage of the neutral stage of the motor; and determining whether there are faults of a connection member connecting between the inverter and the motor and a relay connected to the neutral stage of the motor based on the measured current input to each phase of the motor and the voltage of the neutral stage.Type: GrantFiled: October 17, 2019Date of Patent: June 7, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Patent number: 11329595Abstract: An error determining apparatus of a driving device including a motor and a 3-phase inverter supplying power to the motor through a 3-phase cable may include a resistor provided in each phase of the 3-phase cable, a voltage sensing device sensing voltage of opposite ends of the resistor by a current flowing into the resistor, and a sensing controller determining whether the resistor is faulty or whether the 3-phase cable is opened, based on the sensing voltage of the voltage sensing device and a 3-phase current sum of the 3-phase inverter.Type: GrantFiled: November 20, 2020Date of Patent: May 10, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Heon Young Kwak, Hong Geuk Park
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Publication number: 20210384861Abstract: An error determining apparatus of a driving device including a motor and a 3-phase inverter supplying power to the motor through a 3-phase cable may include a resistor provided in each phase of the 3-phase cable, a voltage sensing device sensing voltage of opposite ends of the resistor by a current flowing into the resistor, and a sensing controller determining whether the resistor is faulty or whether the 3-phase cable is opened, based on the sensing voltage of the voltage sensing device and a 3-phase current sum of the 3-phase inverter.Type: ApplicationFiled: November 20, 2020Publication date: December 9, 2021Inventors: Ho Joon Shin, Heon Young Kwak, Hong Geuk Park
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Patent number: 11167656Abstract: A charging system configured for reducing a leakage current may include an on board charger (OBC) receiving an alternating current (AC) power supplied from an external source to charge a vehicle battery with the AC power; at least an electric component connected to an output end portion of the OBC; at least a switch selectively connecting the electric component to or from a ground; and a controller connected to the at least a switch and reducing the leakage current flowing to the ground by controlling the switch connected to the electric component depending on whether or not the vehicle battery is charged with the AC power.Type: GrantFiled: May 23, 2019Date of Patent: November 9, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Patent number: 10948541Abstract: A system for diagnosing switching element selectively connecting Y-capacitors to ground is provided. The state of a switching device in a power conversion circuit is adjusted such that voltages of different levels are applied to the Y-capacitors, respectively. Therefore, a Y-capacitor disconnect switch which connects a plurality of Y-capacitors connected in common to a DC link to chassis ground is diagnosed.Type: GrantFiled: October 16, 2019Date of Patent: March 16, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Publication number: 20200341061Abstract: A system for diagnosing switching element selectively connecting Y-capacitors to ground is provided. The state of a switching device in a power conversion circuit is adjusted such that voltages of different levels are applied to the Y-capacitors, respectively. Therefore, a Y-capacitor disconnect switch which connects a plurality of Y-capacitors connected in common to a DC link to chassis ground is diagnosed.Type: ApplicationFiled: October 16, 2019Publication date: October 29, 2020Inventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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Publication number: 20200180438Abstract: A fault diagnosis method of a power electric system for a vehicle may include driving an inverter to output an output voltage command for fault detection; measuring a current input to each phase of a motor connected to the inverter; measuring a voltage of the neutral stage of the motor; and determining whether there are faults of a connection member connecting between the inverter and the motor and a relay connected to the neutral stage of the motor based on the measured current input to each phase of the motor and the voltage of the neutral stage.Type: ApplicationFiled: October 17, 2019Publication date: June 11, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon Shin, Nam Koo Han, Sang Yoo Lee, Heon Young Kwak, Hong Geuk Park
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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: 20200180461Abstract: A charging system configured for reducing a leakage current may include an on board charger (OBC) receiving an alternating current (AC) power supplied from an external source to charge a vehicle battery with the AC power; at least an electric component connected to an output end portion of the OBC; at least a switch selectively connecting the electric component to or from a ground; and a controller connected to the at least a switch and reducing the leakage current flowing to the ground by controlling the switch connected to the electric component depending on whether or not the vehicle battery is charged with the AC power.Type: ApplicationFiled: May 23, 2019Publication date: June 11, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joon SHIN, Nam Koo HAN, Sang Yoo LEE, Heon Young KWAK, Hong Geuk PARK
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Patent number: 10293807Abstract: A power control system for a hybrid vehicle is provided. The system includes a high-voltage battery that is capable of being charged or discharged, a first motor and a second motor, a first inverter connected to the first motor, and a second inverter connected to the second motor. Additionally, a converter has a first side connected to the battery and a second side connected in parallel to the first inverter and the second inverter and a diode is connected in parallel to both sides of the converter. A controller is configured to operate the converter and the first and second inverters to cause electric power of the high-voltage battery to be bypassed via the diode and directly supplied to the first inverter or the second inverter.Type: GrantFiled: January 6, 2017Date of Patent: May 21, 2019Assignee: Hyundai Motor CompanyInventors: Su Hyun Bae, Hong Geuk Park, Sung Kyu Kim, Mu Shin Kwak
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Publication number: 20170369049Abstract: A power control system for a hybrid vehicle is provided. The system includes a high-voltage battery that is capable of being charged or discharged, a first motor and a second motor, a first inverter connected to the first motor, and a second inverter connected to the second motor. Additionally, a converter has a first side connected to the battery and a second side connected in parallel to the first inverter and the second inverter and a diode is connected in parallel to both sides of the converter. A controller is configured to operate the converter and the first and second inverters to cause electric power of the high-voltage battery to be bypassed via the diode and directly supplied to the first inverter or the second inverter.Type: ApplicationFiled: January 6, 2017Publication date: December 28, 2017Inventors: Su Hyun Bae, Hong Geuk Park, Sung Kyu Kim, Mu Shin Kwak
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Patent number: 9729098Abstract: A system for controlling a motor of a hybrid vehicle determines a current of a first axis and a current of a second axis according to a driving condition, converts the currents of the first and second axes into a 3-phase AC current, and drives the motor by applying the 3-phase AC current to the motor, and includes: a revised temperature calculation module that calculates a revised temperature in order to compensate a torque error according to counter electromotive force dispersion of the motor; and a current determination module that determines the currents of the first and second axes by substituting the corrected temperature to a current map for each temperature and by using a demand torque at a present driving condition, a present speed of the motor, and a maximum counter magnetic flux of the motor.Type: GrantFiled: October 15, 2014Date of Patent: August 8, 2017Assignee: Hyundai Motor CompanyInventors: Sung Kyu Kim, Mu Shin Kwak, Hong Geuk Park, Suhyun Bae
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Patent number: 9634588Abstract: A device and a method of 6-step controlling of an inverter of a motor driving system are provided. The device and method and apply a voltage to a motor by adopting a 6-step control scheme capable of maximally using an input voltage of the inverter to improve output efficiency of the inverter and the motor and thus improve fuel efficiency of an environmentally friendly vehicle.Type: GrantFiled: December 10, 2014Date of Patent: April 25, 2017Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Hong Geuk Park, Mu Shin Kwak, Sung Kyu Kim, Su Hyun Bae
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Patent number: 9584057Abstract: A control device and a control method can improve a voltage utilization ratio of an inverter for a green car, in which an input DC voltage of the inverter is modulated by a maximum amount into an output AC voltage of the inverter by changing the output AC voltage incapable of being linearly output into a voltage capable of being linearly output. The control method includes steps of: generating a two-phase current command having two phases of a first current command and a second current command; generating a two-phase voltage command having two phases of a first voltage command and a second voltage command; generating a three-phase pole voltage command; modulating the three-phase pole voltage command into a linear output voltage capable of being linearly output; and calculating a voltage gain value, using the two-phase voltage command and an input DC voltage of the inverter.Type: GrantFiled: December 13, 2014Date of Patent: February 28, 2017Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Kyu Kim, Mu Shin Kwak, Hong Geuk Park, Su Hyun Bae
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Patent number: 9481354Abstract: An emergency operation method of a hybrid vehicle, which includes an engine, a first motor connected to the engine through an engine clutch and transmitting power to a vehicle wheel, and a second motor connected with the engine to directly transmit power, includes charging a DC-link terminal with a first counter electromotive force of the first motor and the second motor generated by driving energy of the vehicle or power from the engine when a main relay is off while the vehicle travels. A voltage of the DC-link terminal is controlled by using a second inverter which is connected between the DC-link terminal and the second motor in a driving state of the engine. Power is supplied by using the DC-link terminal, of which the voltage is controlled, for an emergency operation of the vehicle.Type: GrantFiled: May 7, 2015Date of Patent: November 1, 2016Assignee: Hyundai Motor CompanyInventors: Su Hyun Bae, Sung Kyu Kim, Mu Shin Kwak, Hong Geuk Park
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Patent number: 9346364Abstract: A method for emergency driving is carried out in a hybrid vehicle which includes an engine, a first motor connected to the engine through an engine clutch, and a second motor directly connected to the engine so that power transmission is possible, where a DC-link is charged with a counter electromotive force of the first and second motors, generated by driving energy of the vehicle or power of the engine when a main relay is off during driving of the vehicle. The DC-link of which voltage control is performed is used as a power source for the emergency driving of the vehicle. In the emergency driving of the vehicle using the DC-link as the power source, the engine clutch between the engine and the first motor is separated, and the vehicle is then driven by a driving force of the first motor.Type: GrantFiled: December 7, 2014Date of Patent: May 24, 2016Assignee: Hyundai Motor CompanyInventors: Hong Geuk Park, Mushin Kwak, Sung Kyu Kim, Su Hyun Bae
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Publication number: 20160006385Abstract: A control device and a control method can improve a voltage utilization ratio of an inverter for a green car, in which an input DC voltage of the inverter is modulated by a maximum amount into an output AC voltage of the inverter by changing the output AC voltage incapable of being linearly output into a voltage capable of being linearly output. The control method includes steps of: generating a two-phase current command having two phases of a first current command and a second current command; generating a two-phase voltage command having two phases of a first voltage command and a second voltage command; generating a three-phase pole voltage command; modulating the three-phase pole voltage command into a linear output voltage capable of being linearly output; and calculating a voltage gain value, using the two-phase voltage command and an input DC voltage of the inverter.Type: ApplicationFiled: December 13, 2014Publication date: January 7, 2016Inventors: Sung Kyu Kim, Mu Shin Kwak, Hong Geuk Park, Su Hyun Bae
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Publication number: 20160006381Abstract: A device and a method of 6-step controlling of an inverter of a motor driving system are provided. The device and method and apply a voltage to a motor by adopting a 6-step control scheme capable of maximally using an input voltage of the inverter to improve output efficiency of the inverter and the motor and thus improve fuel efficiency of an environmentally friendly vehicle.Type: ApplicationFiled: December 10, 2014Publication date: January 7, 2016Inventors: Hong Geuk Park, Mushin Kwak, Sung Kyu Kim, Su Hyun Bae
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Publication number: 20150321664Abstract: An emergency operation method of a hybrid vehicle, which includes an engine, a first motor connected to the engine through an engine clutch and transmitting power to a vehicle wheel, and a second motor connected with the engine to directly transmit power, includes charging a DC-link terminal with a first counter electromotive force of the first motor and the second motor generated by driving energy of the vehicle or power from the engine when a main relay is off while the vehicle travels. A voltage of the DC-link terminal is controlled by using a second inverter which is connected between the DC-link terminal and the second motor in a driving state of the engine. Power is supplied by using the DC-link terminal, of which the voltage is controlled, for an emergency operation of the vehicle.Type: ApplicationFiled: May 7, 2015Publication date: November 12, 2015Inventors: Su Hyun BAE, Sung Kyu KIM, Mu Shin KWAK, Hong Geuk PARK