Mixed Strategy For PV MPPT Algorithm Optimization Control

With the increasing shortage of fossil energy or environmental protection pressure, all countries get efforts to study the renewable energy, especially the solar energy. Abundant solar energy resources, both can be free to use, and no transportation, is no pollution to the environment. Photovoltaic power generation is the emerging renewable energy industry, prompting human society enter the era of saveing energy and reducing pollution. With the change of policy and the development of technology in recent years, photovoltaic modules is falling prices and volume is decreasing, higher requirements of design and manufacturing are put forward. Maximum power point tracking(MPPT),the core of photovoltaic control technology, has very important theory significance and practical value for improving the system efficiency and reducing costs. Maximum power point tracking as the target for research, simulation analysis is used for in-depth research and algorithm improvement.This article start from the single diode equivalent circuit of photovoltaic cells,mathematical module is established, and simulation model is setup under Matlab/Simulink.The photovoltai output characteristic is analysized,completing the core basis for maximum power tracking,the following study. Meanwhile, the Boost circuit is adopted as DC/DC conversion to set up the body of the photovoltaic system in this paper.In order to achieve the maximum power output,MPPT module and PWM module cooperate to run to realize the impedance matching.Maximum power point tracking(MPPT) technology,the effective way to improve the photoelectric conversion efficiency and, is the soul of the pv control system.First of all, traditional or intelligent control,two single method for a typical algorithm theory or model is introduced and set up respectively in this article.By analyzing the results of simulation, their own theoretical advantages and disadvantages are verified. Secondly, on the basis of the above study,the theoretical concept of mixed strategy is introduced, combining traditional control and intelligent control. Taking the advantages and avoiding disadvantages of each algorithm, the optimization of PV MPPT control is realized,and the simulation verified that the algorithm,mixed strategy for PV MPPT algorithm optimization control, has a good anticipated results of fast dynamic response and stability.Finally, according to MPPT systems’ whole structure and control scheme which is produced in this paper, S3C2440 A is taken as core to establish hardware circuit design.