机械振荡条件下微功率光伏电池板的输出特性研究

漂浮式光伏发电具有不占耕地,温升效应低,防止水过量蒸发等优势,正逐渐受到大家的青睐。然而水面起伏波动导致光伏电池板产生的机械振动,会使其输出电压和电流产生低频振荡,发电品质急剧恶化。本文选择了一微功率光伏电池板,对其在典型天气下的动、静态输出特性进行研究,在此基础上搭建了光伏发电的Simulink仿真模型,仿真得出了动态条件下的的光伏电池的P-U和I-U特性曲线,探究了光伏电池板机械振荡角度和频率变化下输出功率极值点的变化情况。研究结果表明,动态条件下光伏电池板的P-U特性曲线会出现多个局部极值点,且电池板振荡角度对功率极值点的影响更大,为后续漂浮式光伏发电的最大功率点跟踪算法的研究提供了更为直观的数据支撑。

Research on Output Characteristics of Micro Photovoltaic Panels Under Mechanical Oscillation Conditions

Floating photovoltaic power generation has the advantages of not occupying arable land, low temperature rise effect, preventing excessive evaporation of water, etc. It is gradually being favored by everyone. However, the mechanical vibration of the photovoltaic panel caused by the fluctuation of the water surface will cause low-frequency oscillation of its output voltage and current, and the quality of power generation will deteriorate sharply. In this paper, a micro-power photovoltaic panel is selected to study its dynamic and static output characteristics under typical weather. On this basis, a Simulink simulation model of photovoltaic power generation is built. The P-U and I-U characteristic curves explore the change of the extreme point of the output power under the mechanical oscillation angle and frequency of the photovoltaic panel. The research results show that there will be multiple local extreme points in the P-U characteristic curve of photovoltaic panels under dynamic conditions, and the panel oscillation angle has a greater impact on the power extreme points, which is the maximum power point tracking algorithm for subsequent floating photovoltaic power generation. The research provides more intuitive data support.