Patents by Inventor In-Gu Bae
In-Gu 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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Patent number: 9469302Abstract: A torque control apparatus includes: a flux linkage estimator estimating a variation of flux linkage based on a difference between a current temperature of a motor measured by a temperature sensor and a predefined reference temperature; a torque compensation value calculator calculating a torque compensation value corresponding to the current temperature of the motor based on the estimated variation of flux linkage; and a torque compensator compensating for an error of required torque of a torque command by applying the calculated torque compensation value in response to a change in temperature of the motor and outputting a final torque command including the error-compensated required torque to a current map of a motor controller.Type: GrantFiled: September 30, 2015Date of Patent: October 18, 2016Assignee: Hyundai Motor CompanyInventors: Han Hee Park, Gu Bae Kang, Tae Il Yoo
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Patent number: 9428174Abstract: A method of forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG) is provided. The method forcibly charges the high-voltage battery with maximum charging power using the motor and the HSG simultaneously. Particularly, the method includes calculating maximum chargeable power for the high-voltage battery using three dimensional (3D) maximum charging power maps of the motor and the HSG and adjusting maximum charging power using energy integration during forced charging using the motor and the HSG simultaneously. Additionally, excessive temperature prevention logics are applied for protecting the motor and the HSG from an excessive temperature in a forced charging mode.Type: GrantFiled: December 13, 2014Date of Patent: August 30, 2016Assignee: Hyundai Motor CompanyInventors: Jae Sang Lim, Gu Bae Kang, Young Un Kim, Kil Young Youn, Jeong Won Roh, Ji Wan Cha, Jin Ho Kim, Seong Yeop Lim
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Patent number: 9413279Abstract: An apparatus and a method for controlling a motor are provided. The apparatus for controlling a motor includes a temperature sensor that is configured to detect a temperature of an inverter, and a variable amplifier that is configured to variably set an amplification gain that corresponds to the detected temperature of the inverter and amplify and output a resolver signal output from a resolver based on the variably set amplification gain, based on an excitation signal. A controller is then configured to estimate a position of a motor rotor based on the amplified resolver signal to calculate a flux angle and an excitation signal generator is configured to generate the excitation signal that corresponds to the calculated flux angle and output the generated excitation signal to the resolver.Type: GrantFiled: December 10, 2014Date of Patent: August 9, 2016Assignee: Hyundai Motor CompanyInventors: Jeong Won Rho, Young Un Kim, Jae Sang Lim, Kil Young Youn, Ji Wan Cha, Seong Min M. Kim, Jin Ho Kim, Gu Bae Kang
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Publication number: 20160185334Abstract: A vibration reduction control apparatus of a hybrid vehicle having a first motor connected to a first side of an engine and a second motor connected to a second side of the engine through an engine clutch, may include a hybrid controller, an engine controller configured to control the engine, a first motor controller configured to control the first motor, a second motor controller configured to control the second motor, and an anti-spring controller configured between the first motor controller and the second motor controller and control torques of the first and second motors using frequencies of the first motor and the second motor, respectively, wherein the hybrid controller is configured to selectively transmit a torque signal of the engine, a torque signal of the first motor, and a torque signal of the second motor to the engine controller, the first motor controller, and the second motor controller, respectively.Type: ApplicationFiled: July 1, 2015Publication date: June 30, 2016Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Tae Il YOO, Gu Bae KANG, Neung Seop OH, Hyung Seuk OHN, Han Hee PARK, Seong Yeop LIM, So Young SIM
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Publication number: 20160114801Abstract: A torque control apparatus includes: a flux linkage estimator estimating a variation of flux linkage based on a difference between a current temperature of a motor measured by a temperature sensor and a predefined reference temperature; a torque compensation value calculator calculating a torque compensation value corresponding to the current temperature of the motor based on the estimated variation of flux linkage; and a torque compensator compensating for an error of required torque of a torque command by applying the calculated torque compensation value in response to a change in temperature of the motor and outputting a final torque command including the error-compensated required torque to a current map of a motor controller.Type: ApplicationFiled: September 30, 2015Publication date: April 28, 2016Inventors: Han Hee Park, Gu Bae Kang, Tae Il Yoo
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Patent number: 9310456Abstract: An offset compensation method of a current sensor is provided for determining whether an offset compensation of the current sensor is abnormal, and a motor driving system includes the current sensor. The offset compensation method includes: compensating for an offset of the current sensor, and determining whether the offset compensation of the current sensor is abnormal.Type: GrantFiled: December 4, 2013Date of Patent: April 12, 2016Assignee: Hyundai Motor CompanyInventors: Jae-Sang Lim, Seong Yeop Lim, Gu Bae Kang, Ji Wan Cha
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Publication number: 20160087561Abstract: An apparatus and a method for controlling a motor are provided. The apparatus for controlling a motor includes a temperature sensor that is configured to detect a temperature of an inverter, and a variable amplifier that is configured to variably set an amplification gain that corresponds to the detected temperature of the inverter and amplify and output a resolver signal output from a resolver based on the variably set amplification gain, based on an excitation signal. A controller is then configured to estimate a position of a motor rotor based on the amplified resolver signal to calculate a flux angle and an excitation signal generator is configured to generate the excitation signal that corresponds to the calculated flux angle and output the generated excitation signal to the resolver.Type: ApplicationFiled: December 10, 2014Publication date: March 24, 2016Inventors: Jeong Won Rho, Young Un Kim, Jae Sang Lim, Kil Young Youn, Ji Wan Cha, Seong Min M. Kim, Jin Ho Kim, Gu Bae Kang
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Publication number: 20160046279Abstract: The present disclosure provides a method of forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG) which is capable of forcibly charging the high-voltage battery with maximum charging power using the motor and the HSG simultaneously. The method does so by calculating maximum chargeable power for the high-voltage battery using three dimensional (3D) maximum charging power maps of the motor and the HSG, adjusting maximum charging power using energy integration during forced charging using the motor and the HSG simultaneously, and applying excessive temperature prevention logics for protecting the motor and the HSG from an excessive temperature in a forced charging mode.Type: ApplicationFiled: December 13, 2014Publication date: February 18, 2016Inventors: Jae Sang Lim, Gu Bae Kang, Young Un Kim, Kil Young Youn, Jeong Won Roh, Ji Wan Cha, Jin Ho Kim, Seong Yeop Lim
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Publication number: 20160031440Abstract: A method and system for controlling a hybrid vehicle are provided to supply oil pressure to a transmission using an electric oil pump. The method for controlling a hybrid vehicle including an engine, a driving motor, and an engine clutch connecting between the engine and the driving motor includes: detecting a failure of high voltage components for the hybrid vehicle including an air conditioner, a heater, and a low voltage DC-DC converter (LDC). In response to determining a failure of at least one of the high voltage components an operation of the high voltage components in a normal state are turned off. The electric oil pump is operated with a counter electromotive force generated from the driving motor by operating the driving motor with power of the engine while a speed (RPM) of the engine is maintained at a predetermined minimum demand speed or greater.Type: ApplicationFiled: November 18, 2014Publication date: February 4, 2016Inventors: Kil Young Youn, Gu Bae Kang, Ji Wan Cha, Jinho Kim, Sang-Hwan Kim, Jae-Sang Lim
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Publication number: 20150258903Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.Type: ApplicationFiled: April 14, 2015Publication date: September 17, 2015Inventors: Seong Yeop Lim, Gu Bae Kang, Jeongbin Yim, Byungsoon Min, Byoung-Kuk Lee, Seung-Min Shin, Dong-Hee Kim, Dong-Gyun Woo
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Patent number: 9083271Abstract: A motor control system and method are provided for a vehicle that reduces torque ripples due to motor system characteristics while the vehicle is running at ultra-low speed in an electric vehicle running mode. The system includes a current command generator that generates a current command based on a torque command, a motor speed, and a reference voltage. A current controller generates a voltage command based on the current command. A coordinate transformer transforms the voltage command into a 3-phase voltage command by a coordinate transformation and a PWM (pulse width modulation) signal generator generates a switch signal based on the 3-phase voltage command. A PWM inverter generates a 3-phase driving current to drive a motor based on the switch signal and a current control ripple compensator applies a reverse phase harmonic wave to the current controller to reduce a harmonic wave caused by errors generated from the current controller.Type: GrantFiled: October 10, 2013Date of Patent: July 14, 2015Assignee: Hyundai Motor CompanyInventors: Young Jun Kim, Seong Yeop Lim, Gu Bae Kang, Jeongwon Rho
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Publication number: 20150175015Abstract: A control method of electric vehicle according to an exemplary embodiment of the present invention may include a battery supplying electricity, a motor receiving electricity from the battery and generating power, and a controller controlling the battery and the motor, wherein the controller executes instructions for: detecting a torque command, a motor speed, and a motor current; calculating a motor voltage from the motor current; determining whether voltage utilization according to a speed range of the motor is higher than a predetermined value; generating an operating point correcting function according to the motor speed when the voltage utilization is not higher than the predetermined value; calculating a current command according to the motor speed from the operating point correcting function; and outputting the calculated current command.Type: ApplicationFiled: October 31, 2014Publication date: June 25, 2015Inventors: Jae-Sang Lim, Seong Yeop Lim, Gu Bae Kang, Ji Wan Cha, Young Un Kim
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Publication number: 20150153400Abstract: A system and method of detecting disconnection of a power cable of a motor that includes measuring, by a controller, a plurality of phase currents supplied to a motor via a power cable from an inverter and transforming the plurality of phase currents to a stationary reference frame to obtain a first axis current of the synchronous reference frame and a second axis current of the synchronous reference frame. In addition, the method includes calculating, by the controller, a cable open factor using the first axis current of the stationary reference frame and the second axis current of the stationary reference frame and detecting disconnection of the power cable using the cable open factor.Type: ApplicationFiled: December 3, 2013Publication date: June 4, 2015Applicant: HYUNDAI MOTOR COMPANYInventors: Taeil Yoo, Gu Bae Kang
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Publication number: 20140375239Abstract: A motor control system and method are provided for a vehicle that reduces torque ripples due to motor system characteristics while the vehicle is running at ultra-low speed in an electric vehicle running mode. The system includes a current command generator that generates a current command based on a torque command, a motor speed, and a reference voltage. A current controller generates a voltage command based on the current command. A coordinate transformer transforms the voltage command into a 3-phase voltage command by a coordinate transformation and a PWM (pulse width modulation) signal generator generates a switch signal based on the 3-phase voltage command. A PWM inverter generates a 3-phase driving current to drive a motor based on the switch signal and a current control ripple compensator applies a reverse phase harmonic wave to the current controller to reduce a harmonic wave caused by errors generated from the current controller.Type: ApplicationFiled: October 10, 2013Publication date: December 25, 2014Applicant: Hyundai Motor CompanyInventors: Young Jun Kim, Seong Yeop Lim, Gu Bae Kang, Jeongwon Rho
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Patent number: 8914747Abstract: A menu displaying apparatus and method in a portable terminal are provided. In the menu displaying apparatus, a select image buffer stores select images, and an unselect image buffer stores unselect images. A controller reads a select image for a selected menu from the select image buffer, displays the select image together with a title text of the selected menu at a predetermined position in a menu region, reads unselect menu images for unselected menus from the unselect image buffer, and displays the unselect menu images together with title texts of the unselected menus at predetermined positions in the menu region.Type: GrantFiled: April 7, 2005Date of Patent: December 16, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Soo Kim, Eun-Chul Ra, In-Gu Bae, Jae-Hyoung Bae, Byoung-Ho Cho
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Publication number: 20140167669Abstract: An offset compensation method of a current sensor is provided for determining whether an offset compensation of the current sensor is abnormal, and a motor driving system includes the current sensor. The offset compensation method includes: compensating for an offset of the current sensor, and determining whether the offset compensation of the current sensor is abnormal.Type: ApplicationFiled: December 4, 2013Publication date: June 19, 2014Applicant: HYUNDAI MOTOR COMPANYInventors: Jae-Sang Lim, Seong Yeop Lim, Gu Bae Kang, Ji Wan Cha
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Publication number: 20130147431Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.Type: ApplicationFiled: July 26, 2012Publication date: June 13, 2013Applicants: Research & Business Foundation Sungkyunkwan University, HYUNDAI MOTOR COMPANYInventors: Seong Yeop Lim, Gu Bae Kang, Jeongbin Yim, Byungsoon Min, Byoung-Kuk Lee, Seung-Min Shin, Dong-Hee Kim, Dong-Gyun Woo
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Patent number: 8451045Abstract: An inverter control apparatus is provided that offers a ‘soft turn off’ to a gate operation of the inverter so as to securely protect the IGBT. In particular, an inverter control system according to the present invention may include a gate operating portion that controls turn on/off of an IGBT and forcibly turns off the IGBT if a short circuit or an over current is detected from the IGBT, a current buffer that amplifies a control current for the turn on/off of the IGBT that is outputted from the gate operating portion, and a filter that delays the forcible turn off control current that is outputted from the gate operating portion.Type: GrantFiled: December 6, 2010Date of Patent: May 28, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jeongbin Yim, Daewoong Han, Gu Bae Kang, Byungsoon Min
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Publication number: 20120069618Abstract: An inverter control apparatus is provided that offers a ‘soft turn off’ to a gate operation of the inverter so as to securely protect the IGBT. In particular, an inverter control system according to the present invention may include a gate operating portion that controls turn on/off of an IGBT and forcibly turns off the IGBT if a short circuit or an over current is detected from the IGBT, a current buffer that amplifies a control current for the turn on/off of the IGBT that is outputted from the gate operating portion, and a filter that delays the forcible turn off control current that is outputted from the gate operating portion.Type: ApplicationFiled: December 6, 2010Publication date: March 22, 2012Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: Jeongbin Yim, Daewoong Han, Gu Bae Kang, Byungsoon Min
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Patent number: 7145310Abstract: A system for controlling a permanent magnet synchronous motor calculates fundamental a d-axis (or q-axis) voltage command based on a difference between a d-axis (or q-axis) current command and a d-axis (or q-axis) current feedback signal, calculates a harmonic suppression d-axis (or q-axis) voltage command used to suppress at least one higher-order harmonic current component included in a harmonic current component which is calculated based on the differences between the current feedback signals and the current commands, and calculates a d-axis (or q-axis) voltage command by adding the fundamental d-axis (or q-axis) voltage command and the harmonic suppression d-axis (or q-axis) voltage command. The d-axis and q-axis voltage commands are transformed into three-phase voltage commands, which are converted into a drive voltage for driving the permanent magnet synchronous motor. As a result, the harmonic current components are significantly suppressed and the motor's overall performance is improved.Type: GrantFiled: December 12, 2005Date of Patent: December 5, 2006Assignee: Hyundai Motor CompanyInventors: Hyung-Bin Ihm, Gu-Bae Kang