Patents by Inventor Sang Lim

Sang Lim 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).

  • Publication number: 20180118051
    Abstract: A system and method for reducing drive motor speed ripple of an electric vehicle are provided. The system includes an inverter that converts DC power supplied from a battery to AC power and supplies the AC power to the drive motor by inverter switching. A resolver is configured to detect a speed of the drive motor and a position of a rotor, a signal generator includes a microcontroller that is configured to generate a square wave signal. An integrator is configured to convert the square wave to a sine wave, and apply a sine-wave excitation input signal to the resolver. Furthermore, a motor controller is configured to operate the inverter through a PWM signal, adjust the frequency of the excitation input signal to prevent the inverter switching frequency of the inverter and the peaks of an output voltage signal sampled for speed calculation from overlapping.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 3, 2018
    Inventors: Jae Sang Lim, Jeongwon Rho, Gu Bae Kang, Young Un Kim
  • Publication number: 20180095131
    Abstract: A method of diagnosing a magnetization fault of a permanent magnet motor is provided. The method includes calculating a resolver offset value for offset correction of a resolver mounted at the motor, calculating a correction deviation, namely, a difference value between the calculated resolver offset value and a predetermined reference value to compare the calculated correction deviation to an allowable error, comparing a difference value between the calculated correction deviation and a predetermined phase difference value of reverse magnetization of the permanent magnet to the allowable error when the calculated correction deviation is more than the allowable error, and determining that the motor is in a reversely magnetized state when the difference value between the calculated correction deviation and the predetermined phase difference value of reverse magnetization of the permanent magnet is equal to or less than the allowable error.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 5, 2018
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Ji Wan Cha, Gu Bae Kang, Jae Sang Lim, Seong Yeop Lim, Young Un Kim
  • Publication number: 20180083566
    Abstract: A method for controlling a motor based on a variable current controller gain may include a temperature function current applying mode in which when a torque command for the motor is detected by an inverter, 3-phase current to be applied to the motor is output to the motor in consideration of a motor temperature of the motor as a function.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 22, 2018
    Applicant: Hyundai Motor Company
    Inventors: Jae-Sang LIM, Kil-Young YOUN, Jin-Ho KIM, Jeong-Bin YIN
  • Publication number: 20180054153
    Abstract: A method and system for controlling a switching frequency of a vehicle are provided. The method includes monitoring, by a controller of the vehicle, a temperature of a motor, a temperature of a coolant, and a quantity of a coolant when a vehicle engine is turned on. Additionally a switching frequency of an inverter is adjusted based on the monitored temperature of the motor, the monitored temperature of the coolant, and the monitored quantity of the coolant.
    Type: Application
    Filed: November 22, 2016
    Publication date: February 22, 2018
    Inventors: Kil Young Youn, Gu Bae Kang, Jae Sang Lim
  • Publication number: 20180053732
    Abstract: A fan-out semiconductor package includes a semiconductor chip disposed in a through-hole of a first connection member having the through-hole and a second connection member disposed on an active surface of the semiconductor chip. A plurality of dummy vias surrounding the semiconductor chip are disposed in the first connection member.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 22, 2018
    Inventors: Yong Ho BAEK, Moon Hee YI, Kyung Sang LIM
  • Publication number: 20180012755
    Abstract: A method for treating a substrate, in which a supercritical fluid is supplied into a chamber, in which the substrate is carried, to treat the substrate, the method including a supply step of supplying the supercritical fluid into the chamber until a pressure of the interior of the chamber reaches a preset pressure, and a substrate treating step of performing a supercritical process while repeating supply and exhaust of the supercritical fluid into and out of the interior of the chamber after the supply step, wherein a flow rate of the supercritical fluid supplied into the chamber in the supply step is variable.
    Type: Application
    Filed: August 30, 2016
    Publication date: January 11, 2018
    Inventors: Young Hun Lee, Eui Sang Lim, Min Jun Cho, Jae Myoung Lee
  • Publication number: 20170345641
    Abstract: Disclosed is a method for liquid-treating a substrate. In a method for treating a substrate, the substrate may be treated by supplying a treatment liquid onto the rotating substrate by using a first nozzle and a second nozzle, the first nozzle supplies the treatment liquid to an area including a central area on the substrate, and the second nozzle supplies the treatment liquid to a peripheral area of the substrate.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: YOUNG HUN LEE, EUI SANG LIM
  • Patent number: 9796276
    Abstract: An inverter control method for a hybrid vehicle includes: monitoring a torque command and a motor speed of the vehicle in real-time; determining whether the motor speed is less than a first speed; determining whether an absolute value of the torque command is less than a first torque when the motor speed is less than the first speed; changing a switching frequency to a predetermined frequency when the absolute value of the torque command is less than the first torque; and controlling an inverter operation by generating a pulse-width modulation (PWM) signal with the switching frequency changed to the predetermined frequency.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: October 24, 2017
    Assignee: Hyundai Motor Company
    Inventors: Young Un Kim, Jeongwon Rho, Jae Sang Lim
  • Patent number: 9798854
    Abstract: Methods, computer-accessible medium, and systems for generating a genome wide probe map and/or a genome wide haplotype sequence are provided. In particular, a genome wide probe map can be generated by obtaining a plurality of detectable oligonucleotide probes hybridized to at least one double stranded nucleic acid molecule cleaved with at least one restriction enzyme, and detecting the location of the detectable oligonucleotide probes. For example, genome wide haplotype sequence can be generated by analyzing at least one genome wide restriction map in conjunction with at least one genome wide probe map to determine distances between restriction sites of the genome wide restriction map(s) and locations of detectable oligonucleotide probes of the genome wide probe map(s) and defining a consensus map indicating restriction sites based on the genome wide restriction map(s) and/or locations of detectable oligonucleotide probes based on each of the genome wide probe map(s).
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: October 24, 2017
    Assignee: New York University
    Inventors: Bhubaneswar Mishra, Thomas Anantharaman, Sang Lim
  • Patent number: 9527118
    Abstract: Disclosed are systems and methods for treating a substrate. The method may include supplying supercritical carbon dioxide into a chamber to treat a substrate. Here, temperature and pressure of the chamber is maintained to allow carbon dioxide to be directly changed from a gas state to a supercritical state when the carbon dioxide is supplied into the chamber.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: December 27, 2016
    Assignee: Semes Co., Ltd.
    Inventors: Young Hun Lee, Eui Sang Lim, Jae Myoung Lee
  • Publication number: 20160368487
    Abstract: A method for diagnosing demagnetization of a motor of a vehicle can accurately diagnose an irreversible demagnetization state of a permanent magnet of a traction motor or a hybrid starter-generator (HSG) without additional hardware, while minimizing influence of irreversible demagnetization of the permanent magnet of the traction motor or the HSG on vehicle performance. The method includes acquiring operating state information of the motor, determining whether a diagnosis entrance condition including a state in which the motor performs an electricity generating operation is satisfied based on the acquired operating state information of the motor, acquiring a direct current (DC) value in diagnosis, which is used for diagnosis of irreversible demagnetization of the motor when the diagnosis entrance condition is satisfied, and determining whether irreversible demagnetization occurs by comparing the acquired DC value in diagnosis with a pre-stored DC current value in a normal state of the permanent magnet.
    Type: Application
    Filed: December 5, 2015
    Publication date: December 22, 2016
    Inventors: Seong Min Kim, Jae Sang Lim, Kil Young Youn, Ji Wan Cha, Young Un Kim, Jeong Won Rho
  • Publication number: 20160368388
    Abstract: An inverter control method for a hybrid vehicle includes: monitoring a torque command and a motor speed of the vehicle in real-time; determining whether the motor speed is less than a first speed; determining whether an absolute value of the torque command is less than a first torque when the motor speed is less than the first speed; changing a switching frequency to a predetermined frequency when the absolute value of the torque command is less than the first torque; and controlling an inverter operation by generating a pulse-width modulation (PWM) signal with the switching frequency changed to the predetermined frequency.
    Type: Application
    Filed: November 17, 2015
    Publication date: December 22, 2016
    Inventors: Young Un Kim, Jeongwon Rho, Jae Sang Lim
  • Patent number: 9475490
    Abstract: 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: Grant
    Filed: November 18, 2014
    Date of Patent: October 25, 2016
    Assignee: Hyundai Motor Company
    Inventors: Kilyoung Youn, Gubae Kang, Jiwan Cha, Jinho Kim, Sang-Hwan Kim, Jae-Sang Lim
  • Patent number: 9479094
    Abstract: An apparatus for compensating for a torque for a current order of a driving motor includes: a current order generator configured to: i) receive a torque order (Tref*), ii) generate a magnetic flux-based current order map using a generated driving point ratio (1/?max), and iii) generate a current order using the generated current order map; and an iron loss torque compensator configured to extract an iron loss torque compensation value for the generated current order and a speed (Wrpm) of the driving motor.
    Type: Grant
    Filed: December 13, 2014
    Date of Patent: October 25, 2016
    Assignee: Hyundai Motor Company
    Inventors: Young Un Kim, Jeong Won Rho, Jae Sang Lim
  • Publication number: 20160308477
    Abstract: A system and method for reducing drive motor speed ripple of an electric vehicle are provided. The system includes an inverter that converts DC power supplied from a battery to AC power and supplies the AC power to the drive motor by inverter switching. A resolver is configured to detect a speed of the drive motor and a position of a rotor, a signal generator includes a microcontroller that is configured to generate a square wave signal. An integrator is configured to convert the square wave to a sine wave, and apply a sine-wave excitation input signal to the resolver. Furthermore, a motor controller is configured to adjust the frequency of the excitation input signal to prevent the inverter switching frequency of the inverter and the peaks of an output voltage signal sampled for speed calculation from overlapping.
    Type: Application
    Filed: November 9, 2015
    Publication date: October 20, 2016
    Inventors: Jae Sang Lim, Jeongwon Rho, Gu Bae Kang, Young Un Kim
  • Patent number: 9428174
    Abstract: 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: Grant
    Filed: December 13, 2014
    Date of Patent: August 30, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jae Sang Lim, Gu Bae Kang, Young Un Kim, Kil Young Youn, Jeong Won Roh, Ji Wan Cha, Jin Ho Kim, Seong Yeop Lim
  • Patent number: 9409486
    Abstract: 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: Grant
    Filed: October 31, 2014
    Date of Patent: August 9, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jae-Sang Lim, Seongyeop Lim, Gubae Kang, Jiwan Cha, Youngun Kim
  • Patent number: 9413279
    Abstract: 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: Grant
    Filed: December 10, 2014
    Date of Patent: August 9, 2016
    Assignee: Hyundai Motor Company
    Inventors: 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
  • Publication number: 20160133454
    Abstract: Disclosed are systems and methods for treating a substrate. The method may include supplying supercritical carbon dioxide into a chamber to treat a substrate. Here, temperature and pressure of the chamber is maintained to allow carbon dioxide to be directly changed from a gas state to a supercritical state when the carbon dioxide is supplied into the chamber.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 12, 2016
    Inventors: Young Hun Lee, Eui Sang Lim, Jae Myoung Lee
  • Publication number: 20160121374
    Abstract: A substrate treating apparatus is disclosed. The apparatus may include a housing including an upper body and a lower body coupled to each other to define a treatment space, the lower body being provided below the upper body, a supporting unit coupled to the upper body, the supporting unit supporting an edge of a substrate disposed in the treatment space, a fluid supplying unit configured to supply fluid into the treatment space, a sealing member provided between and in contact with the upper and lower bodies, the sealing member hermetically isolating the treatment space from an outer space, and an isolation plate installed between the sealing member and the supporting unit. The isolation plate may be provided to face the sealing member.
    Type: Application
    Filed: November 2, 2015
    Publication date: May 5, 2016
    Inventors: Young Hun Lee, Eui Sang Lim, Jae Myoung Lee