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：US11133776B2

公开(公告)日：2021-09-28

申请号：US16138429

申请日：2018-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Giyob Park ,  Myonghwan Kim ,  Byoungsu Yoon ,  Youngbok Jung ,  Kyungsoo Jung

IPC: H02S40/32 ,  H02S40/34 ,  H02S40/38 ,  H01L31/05 ,  H02M7/48 ,  H02J3/38 ,  H02M1/00 ,  H02M7/44

Abstract: 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.