Patents by Inventor Jongwon Heo

Jongwon Heo 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).

  • Patent number: 11940194
    Abstract: A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: March 26, 2024
    Assignee: LG Electronics Inc.
    Inventors: Jinho Cho, Taeyoung Park, Jongwon Heo
  • Publication number: 20210247120
    Abstract: A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 12, 2021
    Inventors: Jinho CHO, Taeyoung PARK, Jongwon HEO
  • Patent number: 8816623
    Abstract: Disclosed herein is a motor control apparatus and a method thereof. The operation efficiency of a compressor may be maintained by using a sensorless algorithm, sampling a current applied to a motor more than twice within a period of the triangular carrier wave for performing pulse width modulation to calculate a reference voltage, driving the motor according to the calculated reference voltage to improve control resolution, and performing a high-speed operation while reducing a volume of the compressor, without adding a separate hardware when controlling the operation of the motor provided in the compressor at a high speed.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: August 26, 2014
    Assignee: LG Electronics Inc.
    Inventors: Mingi Kim, Jongwon Heo, Kyunghoon Lee
  • Publication number: 20110260673
    Abstract: Disclosed herein is a motor control apparatus and a method thereof. The operation efficiency of a compressor may be maintained by using a sensorless algorithm, sampling a current applied to a motor more than twice within a period of the triangular carrier wave for performing pulse width modulation to calculate a reference voltage, driving the motor according to the calculated reference voltage to improve control resolution, and performing a high-speed operation while reducing a volume of the compressor, without adding a separate hardware when controlling the operation of the motor provided in the compressor at a high speed.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Inventors: Mingi KIM, Jongwon Heo, Kyunghoon Lee