公开(公告)号：US20170317643A1

公开(公告)日：2017-11-02

申请号：US15584607

申请日：2017-05-02

Applicant: LG ELECTRONICS INC.

Inventor： Suchang LEE ,  Yong SONG ,  Youngchan PARK

IPC: H02S40/32 ,  H02M1/00

CPC classification number: H02S40/32 ,  H02M1/32 ,  H02M3/33507 ,  H02M7/53871 ,  H02M2001/0006 ,  H02M2001/007 ,  Y02E10/50 ,  Y02E10/56

Abstract: A photovoltaic module and a photovoltaic system including the same are disclosed. The photovoltaic module includes a solar cell module, a converter unit to convert levels of direct current (DC) power from the solar cell module, an inverter unit to convert the DC power into alternating current (AC) power, a cable electrically connected to the inverter unit and to output the AC power to an outside, a communication unit to exchange data with another photovoltaic module, and a controller to control outputting of at least one of phase information and amplitude information of the photovoltaic module for adjusting at least one of a phase and an amplitude of the another photovoltaic module, when the photovoltaic module is set as a master. Consequently, the phase and/or the amplitude of AC power output from another photovoltaic module may be adjusted to be equal.

公开(公告)号：US20170324269A1

公开(公告)日：2017-11-09

申请号：US15586953

申请日：2017-05-04

Applicant: LG ELECTRONICS INC.

Inventor： Suchang LEE ,  Youngchan PARK

IPC: H02J7/35 ,  H02S40/34 ,  H02S40/32 ,  H01L31/05 ,  H02J7/00 ,  H02J7/34

CPC classification number: H02J7/355 ,  H01L31/02021 ,  H01L31/0504 ,  H02J7/0029 ,  H02J7/0068 ,  H02J7/345 ,  H02J2007/0037 ,  H02S40/32 ,  H02S40/34 ,  Y02E10/50

Abstract: Discussed are a photovoltaic module and a photovoltaic system including the same. According to an embodiment, the photovoltaic module includes a solar cell module including a plurality of solar cells, and a junction box attached to a back surface of the solar cell module, wherein the junction box includes a capacitor unit to store a direct current (DC) power from the solar cell module, and a shutdown unit disposed at a front end of the capacitor unit and to operate to consume the DC power stored in the capacitor unit and temporarily interrupt power output of the solar cell module when the DC power from the solar cell module is outside of a permissible range. Thus, when DC power outside of the permissible range is supplied, the power output can be quickly interrupted while the DC power stored in the capacitor is consumed.

公开(公告)号：US20190312526A1

公开(公告)日：2019-10-10

申请号：US16435052

申请日：2019-06-07

Applicant: LG ELECTRONICS INC. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Suchang LEE ,  Youngchan PARK ,  Hyeonseok LEE ,  Yoongeol CHOI ,  Juhwan YUN ,  Bongkoo KANG

IPC: H02M7/5387 ,  H02S40/34 ,  H02J7/34 ,  H01L31/042 ,  H02J7/35 ,  H02M5/458 ,  H02M5/18

Abstract: A power conversion device includes a coupled inductor having a first inductor and second inductor, connected to a DC source; a full-bridge switching unit including a first leg having a first switching element and a second switching element serially connected to the first switching element, and a second leg having a third switching element and a fourth switching element serially connected to the third switching element, wherein the first leg connected to the first inductor and the second leg connected to the second inductor; a transformer connected to the full-bridge switching unit; a third inductor connected in parallel with the transformer; and a storage capacitor connected to the full-bridge switching unit.

公开(公告)号：US20190074794A1

公开(公告)日：2019-03-07

申请号：US16125040

申请日：2018-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyeonjae LEE ,  Joongtae KIM ,  Youngchan PARK ,  Juhwan YUN ,  Suchang LEE

IPC: H02S40/34 ,  H02S40/32 ,  H02S40/36

Abstract: A photovoltaic module includes: a photovoltaic solar cell module; a junction box disposed on a back surface of the photovoltaic solar cell module, and to convert a DC power from the photovoltaic solar cell module to an AC power; and a first cable electrically connected to the junction box and to output the AC power. The junction box includes an insulating case having an insulating material, and disposed on the back surface of the photovoltaic solar cell module, and a circuit board within the insulating case, and mounted thereon a converter for converting a level of the DC power from the photovoltaic solar cell module, and an inverter for converting a DC power from the converter into an AC power. Th first cable includes first and second conductive lines for outputting the AC power output from the circuit board to the outside, without a grounding line.

公开(公告)号：US20180248495A1

公开(公告)日：2018-08-30

申请号：US15907901

申请日：2018-02-28

Applicant: LG ELECTRONICS INC. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Suchang LEE ,  Youngchan PARK ,  Hyeonseok LEE ,  Yoongeol CHOI ,  Juhwan YUN ,  Bongkoo KANG

IPC: H02M7/5387 ,  H02M5/18 ,  H02M5/458 ,  H02S40/34 ,  H01L31/042 ,  H02J7/34 ,  H02J7/35

CPC classification number: H02M7/5387 ,  H01L31/042 ,  H02J7/345 ,  H02J7/35 ,  H02M5/18 ,  H02M5/4585 ,  H02M2001/0032 ,  H02M2001/007 ,  H02S40/34 ,  Y02B70/16 ,  Y02E10/56

Abstract: Disclosed are a power conversion device and a photovoltaic module including the same. The power conversion device includes a full-bridge switching unit including first to fourth switching elements, a first transformer having an input terminal connected between the first switching element and the second switching element in the full-bridge switching unit and an output terminal connected between the third switching element and the fourth switching element in the full-bridge switching unit, wherein the first switching element is serially connected to the second switching element, and the third switching element is serially connected to the fourth switching element, and a second transformer connected to the full-bridge switching unit as a half-bridge, wherein the full-bridge switching unit coverts a first DC power input to the first transformer into a first alternating current AC waveform, based on variable duty switching.