光伏专用电源模块的应用

Power Supply Module Application Specifically for PV

本文主要介绍一款光伏专用模块电源在光伏监控系统上的应用。传统的光伏监控系统需要一个独立的供电电源系统给监控、控制的电路供电。该供电电源可能是蓄电池或市电电压,由于光伏发电站往往位置偏远,光伏电池占地面积宽广,使得供电系统布线困难,布线和维护成本都较高。光伏电源一改传统的供电方式,针对目前光伏阵列组直流输出电压一般为200VDC-1000VDC的高电压、超宽输入范围的特性,直接从光伏阵列组上取电为其后端负载电路供电,可以使设计电路更加简便,使用方式更加灵活。同时,自带的多重保护功能,可提升模块在电源工作出现异常的情况下电源及其负载的安全性能。

The paper introduced mainly the application of a PV modular power supply over PV surveillance system. Traditional PV surveillance system needs a separate power supply system to provide electricity to surveillance and control circuits. The supplied electricity can be batter or commercial power. Because PV power generaion station is usually in a remote area, and PV battery is wided distributed, which makes it hard for wiring and also, the cost for wiring and maintenance is high. Based on the fact that the present DC output voltage of PV array group PV is between 200V_DC-1000V_DC, which features high voltage and super wide input range, power supply changes the traditional way, and generates power directly from PV arrays to supply power for the rear load circuits, which makes the circuit-designing convenient and flexible for use. Meanwhile, the own multi protection functions can improve the stability of power supply and relevant load under the condition of power supply malfunciton.