Patents by Inventor Daewoong Han
Daewoong 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).
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Patent number: 11953260Abstract: Provided is a vacuum adiabatic body. The vacuum adiabatic body includes a supporting unit configured to maintain a vacuum space part. The supporting unit includes a plurality of bars extending in a vertical direction between the first plate member and the second plate member. When a pitch of the bar is a, an elastic modulus of a material forming the bar is E, and a radius of a long axis is n and a radius of a short axis is m when a cross-section of the bar has an elliptical shape is n, the following equation: 1.0354 < Em 3 ? n a 2 < 188.2097 is satisfied.Type: GrantFiled: November 4, 2022Date of Patent: April 9, 2024Assignee: LG ELECTRONICS INC.Inventors: Sol Han, Daewoong Kim, Wonyeong Jung, Jangseok Lee
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Patent number: 9660524Abstract: A DC-DC converter and a method for estimating output current of a DC-DC converter are provided. The method includes measuring, by a controller, input voltage and output voltage of the DC-DC converter and measuring output voltage of a current transformer (CT) included in the DC-DC converter. In addition, the method includes compensating, by the controller, for the output voltage based on the relationship between the measured output voltage and CT output voltage and compensating for the input voltage by measuring the input current of the DC-DC converter based on the output current of the DC-DC converter into the CT output voltage converted through the current transformer and using an output current map composed of the output voltage and the measured CT voltage. In addition, the output current is estimated using the compensated output voltage and input voltage.Type: GrantFiled: December 23, 2013Date of Patent: May 23, 2017Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Daewoong Han, Sangkyu Lee, Jaehwa Jeon, Jeongbin Yim
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Publication number: 20140365151Abstract: A DC-DC converter and a method for estimating output current of a DC-DC converter are provided. The method includes measuring, by a controller, input voltage and output voltage of the DC-DC converter and measuring output voltage of a current transformer (CT) included in the DC-DC converter. In addition, the method includes compensating, by the controller, for the output voltage based on the relationship between the measured output voltage and CT output voltage and compensating for the input voltage by measuring the input current of the DC-DC converter based on the output current of the DC-DC converter into the CT output voltage converted through the current transformer and using an output current map composed of the output voltage and the measured CT voltage. In addition, the output current is estimated using the compensated output voltage and input voltage.Type: ApplicationFiled: December 23, 2013Publication date: December 11, 2014Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Daewoong Han, Sangkyu Lee, Jaehwa Jeon, Jeongbin Yim
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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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Patent number: 8385044Abstract: A film capacitor is provided that includes a case in which a film cell is incorporated and a heat radiating plate including a heat absorption unit being positioned adjacent to the film cell while not being in contact with the film cell for absorbing heat and a heat radiating unit being exposed to the outside of the case. Preferred film capacitors can perform a stable operation and have durable lifespan, even when an inverter adopting the film capacitor is mounted on a trunk room and an engine room, by effectively cooling heat generated from a film cell of the film capacitor.Type: GrantFiled: October 21, 2009Date of Patent: February 26, 2013Assignees: Kia Motors Corporation, Hyundai Motor CompanyInventors: Jeongyun Lee, Daewoong Han, Gubae Kang, Wooyong Jeon, In-Pil Yoo, Jeongbin Yim, Dongjin Nam, Jinhwan Jung, Junghong Joo
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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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Publication number: 20100128410Abstract: A film capacitor comprises a case in which a film cell is incorporated and a heat radiating plate including a heat absorption unit being positioned adjacent to the film cell while not being in contact with the film cell for absorbing heat and a heat radiating unit being exposed to the outside of the case. The film capacitor can perform a stable operation and has durable lifespan, even when an inverter adopting the film capacitor is mounted on a trunk room and an engine room, by effectively cooling heat generated from a film cell of the film capacitor.Type: ApplicationFiled: October 21, 2009Publication date: May 27, 2010Applicants: Kia Motors Corporaion, Hyundai Motor CompanyInventors: Jeongyun Lee, Daewoong Han, Gubae Kang, Wooyong Jeon, In-Pil Yoo, Jeongbin Yim, Dongjin Nam, Jinhwan Jung, Junghong Joo