The Research Of Wind-Solar Complementary Intelligent Controller

With the growing consumption of fossil energy and the environment problemincreasingly prominent, the development of new energy technologies and protect theenvironment has increasingly aroused the concern and attention of the countries allover the world. Solar and wind energy is clean energy technology and utilization ofthe most mature, the most scale and industrialization of new energy. But solar energyand wind energy have poor stability, and higher defect is influenced by the weatherand the dependence on the surrounding environment. At the same time, on time andarea in solar and wind energy complementary makes wind-light complementarysystem can maximize the use of wind and solar power, energy utilization. With thedevelopment and new energy technology matures, scenery complementary generatingsystem as a kind of flexible, stable power supply system will be widelydevelopmented and applied in the field of new energy in the future.In this paper, from the working principle of solar cells, solar battery equivalentcircuit and mathematical model are given, and on this basis, this paper analyzed theworking properties of solar cells, compared the common several kinds of photovoltaicmaximum power tracking method, and considered the solar cells under the conditionof partial shadow of multimodal phenomenon, eventually taking fuzzy control waywith detection link; Analyzed the working principle and working characteristic ofsmall wind generator, compared with the commonly used method of maximum powertracking, finally taking the regularly monitoring curve, determine the best so as torealize the most power tracing method; Analyzed the working principle and workingcharacteristics of battery, and BUCK circuit was adopted to realize a three-stagecharging method.Based on the above theory, this paper designed the scenery complementarycontroller hardware circuit and software flow are also given. Among them, thehardware circuit consists of two parts: electric design circuit and control circuit. Electrical circuit contains photovoltaic maximum power tracking, wind powermaximum power tracking, battery charging and discharging circuit (BUCK circuit),wind unloading and solar battery meter circuit, etc.; Control circuit include DSPperipheral circuit, auxiliary power circuit, sampling circuit, drive circuit and batterymeter circuit, etc. Software mainly includes the main program, the maximum powertracking of photovoltaic, wind power and maximum power tracking and batterycharging/discharging management a three-stage charging battery management, etc.Finally, in this paper photovoltaic maximum power tracking control strategy(with fuzzy control way to detect the link), maximum power tracking control strategyof wind power (with test link disturbance observation), battery charge/dischargestrategy (a three-stage charging method) has respectively simulated on theMATLAB/SIMULINK, and the simulation results show that the control strategyadopted in this paper could be changed with the condition of real-time trackingcontrol, achieved the effect of the system output power and battery charge/dischargemanagement conforms to its work characteristics, showed the feasibility of themethod, in addition, also the stateflow state diagram and embedded code automaticgeneration process was introduced, and a demonstration example was took. themethod provieds a certain reference for the landscape engineering design andcontrol of the software development.