Patents by Inventor Hyeonggu HAN

Hyeonggu HAN 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: 11476798
    Abstract: Disclosed are a transformer, and a power conversion apparatus or a photovoltaic module including the same. The transformer includes a first core including a base, a first protrusion member to protrude from the base, and a first external wall spaced apart from the first protrusion member and to surround the first protrusion member, a first winding wound in the first core, a second core including a second base, a second protrusion member to protrude from the second base, and a second external wall spaced apart from the second protrusion member and to surround the second protrusion member, a second winding wound in the second core, and a barrier rib configured to separate the first winding and the second winding from each other. Thus, ease of processing is achieved and radiation of electromagnetic noise is reduced.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: October 18, 2022
    Assignee: LG Electronics Inc.
    Inventors: Sunho Yu, Daihyun Kim, Hyeonggu Han
  • Publication number: 20220077818
    Abstract: A photovoltaic module can include a solar cell module including a plurality of solar cells; a converter configured to convert a level of DC power input from the solar cell module; a DC-terminal capacitor configured to store DC power output from the converter; an inverter including a plurality of switching elements and configured to convert DC power from the DC-terminal capacitor into AC power; and a controller configured to control the inverter, in which the converter controls some switching elements among of the plurality of switching elements included in the inverter to perform switching at a third switching frequency, and controls other switching elements among the plurality of switching elements included in the inverter to perform switching at a forth switching frequency higher than the third switching frequency.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 10, 2022
    Applicant: LG ELECTRONICS INC.
    Inventors: Kanghwan JIN, Sunho YU, Kanghwi KIM, Daihyun KIM, Yesl SHIN, Hyeonggu HAN
  • Patent number: 11211897
    Abstract: A photovoltaic module can include a solar cell module including a plurality of solar cells; a converter configured to convert a level of DC power input from the solar cell module; a DC-terminal capacitor configured to store DC power output from the converter; an inverter including a plurality of switching elements and configured to convert DC power from the DC-terminal capacitor into AC power; and a controller configured to control the inverter, in which the converter controls some switching elements among of the plurality of switching elements included in the inverter to perform switching at a third switching frequency, and controls other switching elements among the plurality of switching elements included in the inverter to perform switching at a forth switching frequency higher than the third switching frequency.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 28, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Kanghwan Jin, Sunho Yu, Kanghwi Kim, Daihyun Kim, Yesl Shin, Hyeonggu Han
  • Publication number: 20200169216
    Abstract: Discussed is a photovoltaic module that includes a solar cell module including a plurality of solar cells; a converter to convert a level of a DC power input from the solar cell module; an inverter to convert the DC power into an AC power; and a controller to control the inverter, in which the controller performs asynchronous pulse width modulation control for the inverter, and controls a switching frequency of at least some switching elements in the inverter to be changed for a period including a maximum point or a minimum point of the AC power output from the inverter.
    Type: Application
    Filed: November 26, 2019
    Publication date: May 28, 2020
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyeonggu HAN, Daihyun KIM, Sunho YU
  • Publication number: 20200119687
    Abstract: Disclosed are a transformer, and a power conversion apparatus or a photovoltaic module including the same. The transformer includes a first core including a base, a first protrusion member to protrude from the base, and a first external wall spaced apart from the first protrusion member and to surround the first protrusion member, a first winding wound in the first core, a second core including a second base, a second protrusion member to protrude from the second base, and a second external wall spaced apart from the second protrusion member and to surround the second protrusion member, a second winding wound in the second core, and a barrier rib configured to separate the first winding and the second winding from each other. Thus, ease of processing is achieved and radiation of electromagnetic noise is reduced.
    Type: Application
    Filed: October 10, 2019
    Publication date: April 16, 2020
    Inventors: Sunho YU, Daihyun KIM, Hyeonggu HAN
  • Publication number: 20190165193
    Abstract: The present invention relates to a photovoltaic module and a photovoltaic system including the same. A photovoltaic module and a photovoltaic system including the same include a solar cell module including a plurality of solar cells, a junction box to convert DC power from the solar cell module to AC power, a first cable through which the AC power from the junction box is output to an outside, and a second cable connected to a controller in the junction box for output or input of communication data. Accordingly, data communication can be easily performed using the controller in the photovoltaic module.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 30, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Hyeonggu HAN, Kanghwi KIM, Daihyun KIM, Yesl SHIN, Sunho YU, Kanghwan JIN
  • Publication number: 20190149086
    Abstract: A photovoltaic module can include a solar cell module including a plurality of solar cells; a converter configured to convert a level of DC power input from the solar cell module; a DC-terminal capacitor configured to store DC power output from the converter; an inverter including a plurality of switching elements and configured to convert DC power from the DC-terminal capacitor into AC power; and a controller configured to control the inverter, in which the converter controls some switching elements among of the plurality of switching elements included in the inverter to perform switching at a first switching frequency, and controls other switching elements among the plurality of switching elements included in the inverter to perform switching at a second switching frequency higher than the first switching frequency.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 16, 2019
    Applicant: LG ELECTRONICS INC.
    Inventors: Kanghwan JIN, Sunho YU, Kanghwi KIM, Daihyun KIM, Yesl SHIN, Hyeonggu HAN