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：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.