The Hybrid Power Generation System Research Of Photovoltaic And Fuel Cell

In recent years, due to the shortage of the conventional energy sources, the phenomenon of the environmental pollution, and the power supply shortage in remote area etc,became more serious, it is necessary to make full use of the new energy, of which the application of solar energy was fairly extensive. However, the inner intermittent problems and larger fluctuation phenomenon which brought obstacle to the use of the Solar photovoltaic energy, Therefore, how to deal with the relationship among the battery, fuel cells and photovoltaic (PV) system effectively, eliminate the fluctuations phenomenon of PV system, and improve the efficiency of the system, which become the key problem to the hybrid system.At present, the application of solar photovoltaic power generation has entered into a fairly mature stage in our country, and the research of the fuel cell is in the basic mature stage, but the hybrid power generation system reseach of Photovoltaic and fuel cell,which mainly remains in simulation phase, while which has obtained good results in foreign country, our country has the necessary to learn from the foreigner about the research, this paper studied the matching relationships of the hybrid system between fuel cells and batteries by simulation, and verified the simulation results through experiment.Based on the current energy situation, this paper discussed the advantages of the hydrogen, and the existing problem of storage, transport, then studied the principle and the classification of the fuel cell, the difference between fuel cell and battery, and itself existed problems; then established the mathematical model of the hybrid system, including solar photovoltaic array, fuel cells, electrolytic cell, batteries, and then simulated through matlab/simulink for each module, confirmed the influencing factors of the system; Then mainly analyzed the influence factors of the fuel cell and the electrolysis pool by matlab/simulink, and pointed out the influence tendency and the reasons of each tendency, mainly simulated the conditions when the photovoltaic power was 1kw, and battery, fuel cell with different power allocation, namely, 0w/1000w,200w/800w, 500w/500w,800w/200w,1000w/0w; output power characteristics, as well as each expense problem; Finally, by the experimental research, verified the above circumstance, the experimental results and simulation conclusion were consistent, which came to a conclusion that when battery was 200w, and fuel cells was 800w, the overall efficiency was higher.