公开(公告)号：US20140252860A1

公开(公告)日：2014-09-11

申请号：US14183060

申请日：2014-02-18

Applicant: ABB OY

Inventor： Joonas PUUKKO ,  Lari NOUSIAINEN

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H01L31/02021 ,  Y02E10/50 ,  Y10T307/549

Abstract: Exemplary embodiments are directed to a system, method, apparatus, and arrangement for operating a photovoltaic system. The photovoltaic system including a boost converter having a controllable duty ratio, at least two strings of photovoltaic panels supplying an input of the boost converter, wherein the strings are connected in parallel with each other. The system having detector configured to detect a reverse current in any of the strings, and a controller configured to increase, in response to the detection of a reverse current in at least one of the strings, the duty ratio of the boost converter at least until the reverse current stops.

Abstract translation: 示例性实施例涉及用于操作光伏系统的系统，方法，装置和装置。 所述光伏系统包括具有可控占空比的升压转换器，提供所述升压转换器的输入的至少两串光伏板，其中所述串彼此并联连接。 所述系统具有检测器，其被配置为检测任何串中的反向电流，以及控制器，其被配置为响应于至少一个串中的反向电流的检测而增大升压转换器的占空比至少直到 反向电流停止。