基于固定电压法和功率前馈电导增量法MPPT的研究

The MPPT Control for Phtovoltaic Generating System Based on CVT and Power Feedforward Conductivity Incremental Algorithm

在光伏发电系统中，光伏电池的最大输出功率受温度和光照条件的影响，采用最大功率点跟踪（MaximumPowerPointTracking，简称MPPT）的方法可以使光伏电池持续输出最大功率。通过对光伏电池模块各种最大功率跟踪方法的分析讨论，提出了一种改进的MPPT方法一一固定电压法结合功率前馈电导增量法，并基于Buck电路用matlab对光伏系统进行了分析与仿真，其结果表明，与常规CVT法，电导增量法相比，该方法能够有效提高最大功率点的追踪精度。

In phtovoltaic（PV） systems, maximum power point depends on solar irradiance and temperature. Since the power efficiency of PV array available in the market is still low, the PV array must be ensured to operate always on the maximum point through maximum power point tracking techniques. Through the research on PV array, the paper put forward an modified MPPT method--The constant voltage tracking combined with power feedforward conductivity incremental algorithm.The proposed approach can effectively improve the MPPT speed and efficiency simultaneously. A theoretical analysis of the proposed algorithm is provided and its feasibility is also verified by simulation results