公开(公告)号：US09614375B2

公开(公告)日：2017-04-04

申请号：US14479133

申请日：2014-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Younjong Kang ,  Myonghwan Kim ,  Myungsoo Ham ,  Kyungsoo Jung

IPC: G05F1/00 ,  H02M3/335 ,  H02J1/10 ,  H02J3/38 ,  H02M3/158 ,  H02M3/28 ,  H02M1/00 ,  H02M3/156

CPC classification number: H02J3/383 ,  H02M3/1584 ,  H02M3/285 ,  H02M3/33523 ,  H02M2001/0048 ,  H02M2003/1566 ,  H02M2003/1586 ,  Y02B70/1491 ,  Y02E10/563

Abstract: Discussed are a power conversion apparatus and a photovoltaic module including the power conversion apparatus. The power conversion apparatus includes a converter unit to convert DC voltage from a solar cell module, the converter unit including a plurality of interleaving converters, and a controller to control the converter unit, wherein the controller changes switching periods of the interleaving converters and changes phase differences between the interleaving converters during operation sections of the interleaving converters, in response to a change of the switching periods of the interleaving converters. Consequently, it is possible to prevent instantaneous reduction of output power due to change of switching frequencies of the interleaving converters.

公开(公告)号：US10560052B2

公开(公告)日：2020-02-11

申请号：US15698369

申请日：2017-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Myungsoo Ham ,  Myonghwan Kim ,  Sangin Lee

IPC: G05F1/67 ,  H02S40/32 ,  H01L31/044 ,  H02S40/34 ,  H02S40/38

Abstract: Disclosed is a photovoltaic module. The photovoltaic module includes a solar cell module including a plurality of solar cells, and an inverter unit to receive a direct current (DC) voltage from the solar cell module and convert the DC voltage received from the solar cell module into an alternating current (AC) voltage without converting a level of the DC voltage received from the solar cell module.

公开(公告)号：US09602048B2

公开(公告)日：2017-03-21

申请号：US14479179

申请日：2014-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Younjong Kang ,  Myonghwan Kim ,  Myungsoo Ham ,  Wontae Ham ,  Giyob Park ,  Byoungsu Yoon

IPC: G05F1/00 ,  H02M3/335 ,  H02J1/10 ,  H02S40/32 ,  H02S40/34 ,  H02J7/35 ,  H02M1/14 ,  H02M7/493 ,  H02M7/5387

CPC classification number: H02S40/32 ,  H02J7/35 ,  H02M1/14 ,  H02M3/335 ,  H02M7/493 ,  H02M7/5387 ,  H02S40/34 ,  Y02E10/56

Abstract: 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.

公开(公告)号：US09716466B2

公开(公告)日：2017-07-25

申请号：US14479120

申请日：2014-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Dongho Han ,  Myonghwan Kim ,  Myungsoo Ham ,  Hyunho Do

IPC: H02M3/24 ,  H02S40/32 ,  H02S40/34 ,  H04B3/54 ,  H02J3/38 ,  H02M7/48 ,  H02J13/00 ,  H02M3/28 ,  H02M1/00

CPC classification number: H02S40/32 ,  H02J3/383 ,  H02J13/0031 ,  H02M3/285 ,  H02M7/48 ,  H02M2001/007 ,  H02S40/34 ,  H04B3/54 ,  H04B2203/5416 ,  Y02E10/563 ,  Y02E40/72 ,  Y04S10/123

Abstract: A power conversion apparatus, a photovoltaic module, and a communication device and a photovoltaic system including the same are discussed. The power conversion apparatus includes an inverter unit to perform alternating current (AC) voltage conversion based on direct current (DC) voltage from a solar cell module, a controller to control the inverter unit, and a communication unit to add a carrier frequency signal containing predetermined information to the converted AC voltage and output the AC voltage containing the predetermined information to a grid and, when a level of the converted AC voltage is equal to or less than a predetermined level, to add the carrier frequency signal containing the predetermined information to DC voltage and output the DC voltage containing the predetermined information to the grid. Consequently, it is possible to stably transmit information.