基于AVR单片机的光伏发电量检测系统设计

针对太阳能光伏发电系统中发电量检测问题,设计了一种精度更高,功耗、成本更低的太阳能光伏发电量检测系统。系统以AVR单片机为控制器,避免了模数转换器等引起的能量消耗,并最大程度地简化了系统结构。同时引入了霍尔电流传感器,可以几乎无损耗地将电流信号转换为电压信号。实验结果表明:光伏发电系统正常工作时,光伏发电量能够实时显示在显示屏上,且误差率不超过5%。

Design of photovoltaic power generating capacity detection system based on AVR single-chip computer

Power measurement is an important part of solar photovoltaic power generation system. This paper presents a photovoltaic power generating capacity detection system that consumes less energy,lower cost and gives a more precise value. The system uses AVR single chip computer as the controller,avoiding consumption of analog-digital conversion and others,and simplifying system structure.At the same time,Hall current sensor is used to change current signals into voltage signals with least energy consumption. The experimental results show that photovoltaic power generating capacity can be displayed on the screen in real time,and the error rate will not exceed 5% when working.