公开(公告)号：EP3633816A1

公开(公告)日：2020-04-08

申请号：EP18197993.1

申请日：2018-10-01

Applicant: ABB Schweiz AG

Inventor： DA SILVEIRA POSTIGLIONE, Cicero ,  DIJKHUIZEN, Frans ,  SVENSSON, Jan ,  NAMI, Alireza ,  CANALES, Francisco

IPC: H02J3/38 ,  H02M7/483 ,  H02M7/487

Abstract: An inverter arrangement (10A) based on photovoltaic elements comprises at least two strings comprising switching elements, which strings are connected to at least two AC terminals (AC1, AC2, AC3), where at least one of the strings is a string of submodules (SiA, S2A, S3A, S4A, S5A, S6A, S1B, S2B, S3B, S4B, S5B, S6B, S1C, S2C, S3C, S4C, S5C, S6C), each submodule comprising at least two switching elements and an energy storage element, having DC terminals and being configured to make a voltage contribution to the forming of an AC voltage on an AC terminal, and a number of input stages (IS1, IS2, IS3, IS4, IS5, IS6) each comprising at least one energy delivery element, where at least some of the energy delivery elements are photovoltaic elements, each input stage being connected to DC terminals of a corresponding for delivering power to or from at least one AC terminal (AC1, AC2, AC3) when the corresponding submodule contributes to the forming of the AC voltage on the AC terminal.