公开(公告)号：US20190149086A1

公开(公告)日：2019-05-16

申请号：US16192390

申请日：2018-11-15

Applicant: LG ELECTRONICS INC.

Inventor： Kanghwan JIN ,  Sunho YU ,  Kanghwi KIM ,  Daihyun KIM ,  Yesl SHIN ,  Hyeonggu HAN

IPC: H02S40/32 ,  H02S40/38 ,  H02S40/34 ,  H02M3/335 ,  H02M1/44 ,  H02M7/5387 ,  H02M1/14 ,  H02J3/38

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.

公开(公告)号：US20220077818A1

公开(公告)日：2022-03-10

申请号：US17531440

申请日：2021-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Kanghwan JIN ,  Sunho YU ,  Kanghwi KIM ,  Daihyun KIM ,  Yesl SHIN ,  Hyeonggu HAN

IPC: H02S40/32 ,  H02S40/38 ,  H02S40/34 ,  H02M7/5387 ,  H02M1/14 ,  H02M3/335

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.

公开(公告)号：US20200169216A1

公开(公告)日：2020-05-28

申请号：US16696858

申请日：2019-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Hyeonggu HAN ,  Daihyun KIM ,  Sunho YU

IPC: H02S40/32 ,  H02J3/38 ,  H02M3/335 ,  H02M7/5387 ,  H02M1/14

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.

公开(公告)号：US20190165193A1

公开(公告)日：2019-05-30

申请号：US16203065

申请日：2018-11-28

Applicant: LG ELECTRONICS INC.

Inventor： Hyeonggu HAN ,  Kanghwi KIM ,  Daihyun KIM ,  Yesl SHIN ,  Sunho YU ,  Kanghwan JIN

IPC: H01L31/047 ,  H02J3/38 ,  H02M7/44

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.