Patents by Inventor Giyob PARK
Giyob PARK 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: 11133776Abstract: Discussed is a photovoltaic module including: a solar cell module including a plurality of solar cells; a converter to convert a level of first direct current (DC) power input from the solar cell module, and to output second DC power; an inverter to convert the second DC power supplied from the converter into alternating current (AC) power; and a controller to control the converter and the inverter, wherein the converter comprises: a full-bridge switching part to switch the first DC power; a transformer having an input side connected to an output terminal of the full-bridge switching part; and a half-bridge switching part connected to an output side of the transformer, wherein the controller changes a switching frequency of the full-bridge switching part and the half-bridge switching part in a first section of a waveform.Type: GrantFiled: September 21, 2018Date of Patent: September 28, 2021Assignee: LG ELECTRONICS INC.Inventors: Giyob Park, Myonghwan Kim, Byoungsu Yoon, Youngbok Jung, Kyungsoo Jung
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Patent number: 11005267Abstract: A photovoltaic module includes a solar cell module including multiple solar cells, and first and second conductive lines connected respectively to first and second solar cells among the solar cells, and a junction box attached to the solar cell module. The junction box includes a power conversion unit including a capacitor unit located between the first and second conductive lines, a converter unit to change the level of a DC voltage at opposite ends of the capacitor unit and to output the DC voltage, and a controller to control the converter unit. When shading occurs in some of the solar cells, the power conversion unit supplies a second current, the level of which is lower than the level of a first current supplied before shading occurs, whereby the possibility of generation of a hot spot may be reduced despite the absence of bypass diodes when shading occurs.Type: GrantFiled: June 24, 2019Date of Patent: May 11, 2021Assignee: LG ELECTRONICS INC.Inventors: Dongho Han, Giyob Park, Myonghwan Kim, Yunsu Bae
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Patent number: 10742132Abstract: An integral inverter, usable with a solar cell module comprising a solar cell panel, can include a terminal for inputting a DC power from the solar cell panel; a bypass diode electrically connected to the terminal; an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode; a case to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein, and attached to a back surface of the solar cell panel using an adhesive; and an AC cable for outputting AC power from the case.Type: GrantFiled: July 18, 2017Date of Patent: August 11, 2020Assignee: LG ELECTRONICS INC.Inventors: Hyukjin Nam, Joonho Jeon, Myonghwan Kim, Jinyoung Cho, Daehyun Shin, Byoungsu Yoon, Giyob Park, Byungwook Woo, Jungguen Kim, Hyunrok Mun
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Publication number: 20190312437Abstract: A photovoltaic module includes a solar cell module including multiple solar cells, and first and second conductive lines connected respectively to first and second solar cells among the solar cells, and a junction box attached to the solar cell module. The junction box includes a power conversion unit including a capacitor unit located between the first and second conductive lines, a converter unit to change the level of a DC voltage at opposite ends of the capacitor unit and to output the DC voltage, and a controller to control the converter unit. When shading occurs in some of the solar cells, the power conversion unit supplies a second current, the level of which is lower than the level of a first current supplied before shading occurs, whereby the possibility of generation of a hot spot may be reduced despite the absence of bypass diodes when shading occurs.Type: ApplicationFiled: June 24, 2019Publication date: October 10, 2019Applicant: LG ELECTRONICS INC.Inventors: Dongho HAN, Giyob PARK, Myonghwan KIM, Yunsu BAE
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Patent number: 10381839Abstract: A photovoltaic module includes a solar cell module including multiple solar cells, and first and second conductive lines connected respectively to first and second solar cells among the solar cells, and a junction box attached to the solar cell module. The junction box includes a power conversion unit including a capacitor unit located between the first and second conductive lines, a converter unit to change the level of a DC voltage at opposite ends of the capacitor unit and to output the DC voltage, and a controller to control the converter unit. When shading occurs in some of the solar cells, the power conversion unit supplies a second current, the level of which is lower than the level of a first current supplied before shading occurs, whereby the possibility of generation of a hot spot may be reduced despite the absence of bypass diodes when shading occurs.Type: GrantFiled: March 15, 2017Date of Patent: August 13, 2019Assignee: LG ELECTRONICS INC.Inventors: Dongho Han, Giyob Park, Myonghwan Kim, Yunsu Bae
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Publication number: 20190097576Abstract: Discussed is a photovoltaic module including: a solar cell module including a plurality of solar cells; a converter to convert a level of first direct current (DC) power input from the solar cell module, and to output second DC power; an inverter to convert the second DC power supplied from the converter into alternating current (AC) power; and a controller to control the converter and the inverter, wherein the converter comprises: a full-bridge switching part to switch the first DC power; a transformer having an input side connected to an output terminal of the full-bridge switching part; and a half-bridge switching part connected to an output side of the transformer, wherein the controller changes a switching frequency of the full-bridge switching part and the half-bridge switching part in a first section of a waveform.Type: ApplicationFiled: September 21, 2018Publication date: March 28, 2019Applicant: LG ELECTRONICS INC.Inventors: Giyob PARK, Myonghwan KIM, Byoungsu YOON, Youngbok JUNG, Kyungsoo JUNG
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Publication number: 20170317603Abstract: An integral inverter, usable with a solar cell module comprising a solar cell panel, can include a terminal for inputting a DC power from the solar cell panel; a bypass diode electrically connected to the terminal; an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode; a case to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein, and attached to a back surface of the solar cell panel using an adhesive; and an AC cable for outputting AC power from the case.Type: ApplicationFiled: July 18, 2017Publication date: November 2, 2017Applicant: LG ELECTRONICS INC.Inventors: Hyukjin NAM, Joonho JEON, Myonghwan KIM, Jinyoung CHO, Daehyun SHIN, Byoungsu YOON, Giyob PARK, Byungwook WOO, Jungguen KIM, Hyunrok MUN
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Publication number: 20170271876Abstract: A photovoltaic module includes a solar cell module including multiple solar cells, and first and second conductive lines connected respectively to first and second solar cells among the solar cells, and a junction box attached to the solar cell module. The junction box includes a power conversion unit including a capacitor unit located between the first and second conductive lines, a converter unit to change the level of a DC voltage at opposite ends of the capacitor unit and to output the DC voltage, and a controller to control the converter unit. When shading occurs in some of the solar cells, the power conversion unit supplies a second current, the level of which is lower than the level of a first current supplied before shading occurs, whereby the possibility of generation of a hot spot may be reduced despite the absence of bypass diodes when shading occurs.Type: ApplicationFiled: March 15, 2017Publication date: September 21, 2017Applicant: LG ELECTRONICS INC.Inventors: Dongho HAN, Giyob PARK, Myonghwan KIM, Yunsu BAE
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Patent number: 9735699Abstract: Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, a bypass diode electrically connected to the terminal, an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode and a case configured to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein.Type: GrantFiled: September 5, 2014Date of Patent: August 15, 2017Assignee: LG Electronics Inc.Inventors: Hyukjin Nam, Joonho Jeon, Myonghwan Kim, Jinyoung Cho, Daehyun Shin, Byoungsu Yoon, Giyob Park, Byungwook Woo, Jungguen Kim, Hyunrok Mun
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Patent number: 9627980Abstract: Disclosed are a power conversion apparatus and a photovoltaic module. The power conversion apparatus includes a converter unit configured to convert a direct current (DC) voltage from a solar cell module, a clamp unit configured to limit a surge voltage in the converter unit, and a controller configured to control the converter unit. Through this configuration, the power conversion apparatus is capable of limiting a surge voltage depending on operation of the converter unit.Type: GrantFiled: February 13, 2015Date of Patent: April 18, 2017Assignee: LG ELECTRONICS INC.Inventors: Giyob Park, Youngbok Jung, Heungchan Oh
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Patent number: 9602048Abstract: A photovoltaic module is discussed. The photovoltaic module includes a solar cell module including a plurality of solar cells and a junction box attached to a rear surface of the solar cell module, the junction box including a power conversion module to convert direct current (DC) voltage supplied from the solar cell module into alternating current (AC) voltage and to output the AC voltage, wherein the power conversion module included at least one bypass diode to receive the DC voltage from the solar cell module, a converter unit to power-convert the DC voltage from the at least one bypass diode, the converter unit including at least three interleaving converters, a capacitor to store voltage output from the converter unit, and an inverter unit to output the AC voltage using the voltage stored in the capacitor. Consequently, it is possible to stably output AC voltage.Type: GrantFiled: September 5, 2014Date of Patent: March 21, 2017Assignee: LG ELECTRONICS INC.Inventors: Younjong Kang, Myonghwan Kim, Myungsoo Ham, Wontae Ham, Giyob Park, Byoungsu Yoon
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Publication number: 20150236599Abstract: Disclosed are a power conversion apparatus and a photovoltaic module. The power conversion apparatus includes a converter unit configured to convert a direct current (DC) voltage from a solar cell module, a clamp unit configured to limit a surge voltage in the converter unit, and a controller configured to control the converter unit. Through this configuration, the power conversion apparatus is capable of limiting a surge voltage depending on operation of the converter unit.Type: ApplicationFiled: February 13, 2015Publication date: August 20, 2015Applicant: LG ELECTRONICS INC.Inventors: Giyob PARK, Youngbok JUNG, Heungchan OH
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Publication number: 20150200603Abstract: Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, a bypass diode electrically connected to the terminal, an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the bypass diode and a case configured to integrate at least one of the terminal and the bypass diode with the DC-AC inverter located therein.Type: ApplicationFiled: September 5, 2014Publication date: July 16, 2015Inventors: Hyukjin NAM, Joonho JEON, Myonghwan KIM, Jinyoung CHO, Daehyun SHIN, Byoungsu YOON, Giyob PARK, Byungwook WOO, Jungguen KIM, Hyunrok MUN
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Publication number: 20150200623Abstract: A photovoltaic module is discussed. The photovoltaic module includes a solar cell module including a plurality of solar cells and a junction box attached to a rear surface of the solar cell module, the junction box including a power conversion module to convert direct current (DC) voltage supplied from the solar cell module into alternating current (AC) voltage and to output the AC voltage, wherein the power conversion module included at least one bypass diode to receive the DC voltage from the solar cell module, a converter unit to power-convert the DC voltage from the at least one bypass diode, the converter unit including at least three interleaving converters, a capacitor to store voltage output from the converter unit, and an inverter unit to output the AC voltage using the voltage stored in the capacitor. Consequently, it is possible to stably output AC voltage.Type: ApplicationFiled: September 5, 2014Publication date: July 16, 2015Inventors: Younjong KANG, Myonghwan KIM, Myungsoo HAM, Wontae HAM, Giyob PARK, Byoungsu YOON