为了克服传统两级式光伏并网系统在设备体积、成本和控制复杂度上均存在的不足,提出了一种无直流稳压环节的新型单级式光伏并网系统电路拓扑和适用于此拓扑的电压变化速度受限的最大功率点控制算法(V V S L -M P P T )。使用仿真和实验的方法,对系统的性能进行了验证。实验样机实现连续工作10 h 的稳定运行,输出稳定在系统最大功率点,并于14:0 0:00 左右达到全天峰值。结果表明,在此算法控制下,系统可稳定追踪最大功率点,并对光照突变等恶劣情况,有较强的适应能力。-PV Inverter w

This paper presents an improved maximum power point tracking (MPPT) algorithm of a PV system under real climatic conditions. The proposed MPPT is based on the perturbation and observation (P&O) strategy and the variable step method that contr

defferntes techniuqe mppt filewhit p&o

This paper provides such a comparison. MPPT algorithm performance is quantified through the MPPT efficiency. In this work, results are obtained for three optimized algorithms. It is found that the P&O method, when properly optimized, can have MPPT ef