基于模糊控制的太阳能光伏发电系统的 MPPT研究

摘要

The photovoltaic systems are discussed and analyzed, in order to obtain the maximum power of solar cells. And we take it as the goal that to track the maximum power of solar cell. The model of photovoltaic cells is established by using Simulink embedded function. The circuit model of Boost for research MPPT is abstracted. By the Combination of two models, photovoltaic system's basic MPPT principle was simulated. The three classical MPPT algorithms and the basic principle of fuzzy control are introduced. At the same time, the advantage, disadvantage and applications of P&O and ICA has been illustrated. We validate the changes of power caused by variations of atmosphere conditions simulation. Comparing the three methods in simulation, we can see that FC has better dynamic and static performances.%将太阳能光伏发电系统作为研究对象，以跟踪太阳能电池的最大功率为目标，在Matlab环境下，利用Simulink仿真技术，建立仿真模型，对太阳能光伏发电系统的MPPT进行研究。阐述了模糊控制法的基本原理，分别验证了环境条件的改变引起的功率变化。介绍了扰动观察法和电导增量法两种经典方法，比较这三种方法的实验结果，可以证明模糊控制法具有较好的动态和稳态性能。