公开(公告)号：US20150091487A1

公开(公告)日：2015-04-02

申请号：US14498099

申请日：2014-09-26

Applicant: ABB OY

Inventor： Laxmikantha Shenoy ,  Ahmed Syed ,  Chetan Patange ,  Deepak Pandey ,  Mikko Lammi ,  Rahul Raj ,  Satyan RN

IPC: H02P27/04

CPC classification number: H02P27/047 ,  F04D13/06 ,  F04D15/0088 ,  H02P29/026

Abstract: A method and arrangement for operating a pump system are disclosed, the pump system including a pump arranged to be rotated with an AC motor, an inverter, the output of which is electrically connected to the AC motor, and a photovoltaic panel system electrically connected to feed DC power to the inverter. The method can include setting a voltage limit, and determining continuously voltage obtained from the photovoltaic panel system. When the determined voltage of the photovoltaic panel system is below the set voltage limit, frequency of the inverter can be controlled such that the ratio between output voltage of the inverter and the output frequency is substantially constant. When the determined voltage of the photovoltaic panel system exceeds the voltage limit, the inverter frequency can be controlled for keeping voltage of the photovoltaic panel system substantially at the voltage limit.

Abstract translation: 公开了一种用于操作泵系统的方法和装置，所述泵系统包括布置成与AC马达一起旋转的泵，其输出电连接到AC马达的逆变器，以及电连接到 为变频器馈送直流电源。 该方法可以包括设置电压限制，以及确定从光伏面板系统获得的连续电压。 当光伏面板系统的确定电压低于设定电压极限时，可以控制逆变器的频率，使得逆变器的输出电压与输出频率之间的比率基本上是恒定的。 当光伏面板系统的确定电压超过电压极限时，可以控制逆变器频率以保持光伏面板系统的电压基本上处于电压极限。