Research For Maximum Power Point Tracking Of Photovoltaic Grid-connected System Based On Fuzzy Control

In the dual requirement of deal with global energy crisis and environment protection, people pay more and more attention on developing and using clean renewable solar energy. With the continuous development of Solar photovoltaic conversion technology, a large-scale use of solar energy become possible. And grid-connected PV system will become the main form of utilization of solar energy. At present, the main problem of PV grid-connected system is the low conversion efficiency. This has become a priority issue of impeding the wide use of PV grid-connected system.This article research maximum power point tracking of PV grid-connected system, make fuzzy control theory applied in PV grid-connected system maximum power tracking control. Detailed theoretical analysis and discuss characteristics and application of photovoltaic arrays,PV grid-connected system of structural design,principle of maximum tracking and application of fuzzy control. Established a simulation model, and experimental validation. This article mainly research is:Introduced the power principle and working characteristics of photovoltaic cell array, analyzed the affection of external factors on the battery array output characteristics;Given part of the PV power system structure, designed the hardware circuit;Introduced and compared several control algorithm of photovoltaic maximum power point tracking,for the inadequacies of this several algorithms,Proposed algorithm for maximum power point tracking based on fuzzy control;Constructed the simulation model of photovoltaic systems, design and simulation the whole system module,especially simulink the maximum power point tracking based on fuzzy control; Produced a circuit system simulation experiment, for some functions of the experimental test system. Simulation and experimental results results show that the fuzzy control is well on the maximum power point tracking, effectively improve the photovoltaic efficiency of electricity generation system. Demonstrated the reasonable and feasible of photovoltaic maximum power point tracking program based on fuzzy control. Figure [55] table [6] reference [51]...