光伏水泵群控系统的最大功率跟踪及稳定控制

Photovoltaic Pump Group Control System Maximum Power Tracking and Stable Control

本文将非均衡功率扰动搜索应用于光伏水泵系统中,通过非均衡功率扰动搜索阵列的最大功率,研究了如何在保持已运行水泵频率不变的前提下,更加准确的获取阵列最大功率。同时在水泵系统的运行时,防止系统的阵列功率有大幅度跌落,在比例控制的基础上,加入了频率闭环,即使阵列功率出现大幅跌落,系统仍可保持稳定。

In this paper, the unbalanced power disturbance search is applied to the photovoltaic pump sys-tem. By searching the maximum power of the array by unbalanced power disturbance, how to obtain the maximum power of the array more accurately while keeping the running pump frequency constant is studied. In order to prevent the array project in the search project has a substantial drop in power, in the proportional control, based on the frequency closed-loop, even if the array power dropped sharply, the system can remain stable.