Patents by Inventor Su Hyun Bae
Su Hyun Bae 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: 20200328701Abstract: An apparatus for diagnosing failure of a motor driving system using a resolver signal includes a resolver sensing a rotor position and a rotational frequency of a motor, a fast Fourier transform operation unit configured to perform fast Fourier transform on an output signal of the resolver to convert the output signal into frequency signals, a specific frequency band extraction unit configured to extract, from among the frequency signals, a specific frequency band including one or more frequencies selected from among a PWM switching frequency applied to an inverter, a motor's rotational frequency, and a preset resolver excitation signal frequency, and a failure diagnosing unit configured to diagnose failure by comparing a sum or a highest voltage among voltages corresponding to the frequencies included in the specific frequency band with a predetermined reference value.Type: ApplicationFiled: October 21, 2019Publication date: October 15, 2020Inventors: Joo Young Park, Young Un Kim, Jae Sang Lim, Jae Ho Hwang, Su Hyun Bae, Yong Jae Lee, Tae Young Chung
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Patent number: 10778134Abstract: 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: GrantFiled: December 4, 2018Date of Patent: September 15, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Kyu Kim, Yong Jae Lee, Su Hyun Bae, Ho Joon Shin, Tae Won Ha, Joo Young Park
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Patent number: 10771003Abstract: 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: GrantFiled: November 20, 2018Date of Patent: September 8, 2020Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Yong Jae Lee, Joo Young Park, Ho Joon Shin, Sung Kyu Kim, Su Hyun Bae
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Publication number: 20200189409Abstract: An apparatus for controlling a charging system using a motor-driving system is configured to suppress the occurrence of torque in a motor when a battery is ch receiving the supply of external charging current to a neutral point of the motor.Type: ApplicationFiled: June 5, 2019Publication date: June 18, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Yong Jae LEE, Jae Ho HWANG, Joo Young PARK, Su Hyun BAE
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Publication number: 20200177014Abstract: A charging system using a motor driving system including a battery, an inverter configured to receive and convert DC power stored in the battery into three-phase AC power and to output the three-phase AC power to a motor when the motor is driven and the motor configured to generate rotation force using the three-phase AC power output from the inverter, may include a controller configured to control the inverter to boost a voltage of a neutral point of the motor and to output the boosted voltage to the battery, by determining duty values of switching elements in the inverter when external charging current is provided to the neutral point of the motor.Type: ApplicationFiled: June 10, 2019Publication date: June 4, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Yong Jae Lee, Joo Young Park, Jae Ho Hwang, Mu Shin Kwak, Su Hyun Bae
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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: 10483900Abstract: A system for controlling an inverter may include a motor; then inverter including a plurality of switching elements turned on/off by a pulse width modulation signal, converting DC power into AC power according to on/off of the plurality of switching elements and providing the AC power to the motor; a current sensor for detecting and outputting a current provided to the motor; a rotation angle sensor for detecting and outputting a rotor angle of the motor; and a controller for performing duty determination control for determining a duty of the pulse width modulation signal on the basis of values detected by the current sensor and the rotation angle sensor and a torque command of the motor.Type: GrantFiled: September 17, 2018Date of Patent: November 19, 2019Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Joo Young Park, Mu Shin Kwak, Jae Ho Hwang, Su Hyun Bae, Yong Jae Lee, Sung Kyu Kim
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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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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: 20190260326Abstract: A system for controlling an inverter may include a motor; then inverter including a plurality of switching elements turned on/off by a pulse width modulation signal, converting DC power into AC power according to on/off of the plurality of switching elements and providing the AC power to the motor; a current sensor for detecting and outputting a current provided to the motor; a rotation angle sensor for detecting and outputting a rotor angle of the motor; and a controller for performing duty determination control for determining a duty of the pulse width modulation signal on the basis of values detected by the current sensor and the rotation angle sensor and a torque command of the motor.Type: ApplicationFiled: September 17, 2018Publication date: August 22, 2019Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Joo Young PARK, Mu Shin KWAK, Jae Ho HWANG, Su Hyun BAE, Yong Jae LEE, Sung Kyu KIM
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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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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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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
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Patent number: 10137791Abstract: A method for controlling a vehicle converter includes: acquiring, by a controller, required maximum voltages and required minimum voltages of a first motor and a second motor using required torque and a rotation speed of the first motor and the second motor; acquiring voltage commands of the first motor and the second motor using the rotation speed and a magnetic flux of the first motor and the second motor; acquiring a corrected voltage command using the voltage commands of the first motor and the second motor; acquiring an output voltage command of the converter using the required maximum voltage and the required minimum voltage of the first motor and the second motor, the corrected voltage command, and a voltage of a battery; and controlling an output voltage of the converter using the output voltage command.Type: GrantFiled: August 5, 2016Date of Patent: November 27, 2018Assignee: Hyundai Motor CompanyInventors: Jun Mo An, Su Hyun Bae, Sung Kyu Kim, Joo Young Park