Research On Implementation Of Dual-axis Solar Tracking Systems And Its MPPT Algorithm

With a global shortage of conventional energy and serious environmental pollution, solar energy as a renewable resource gradually being worldwide concern and attention. In the development and utilization of solar energy, the solar tracking system is a vital part of the use of solar energy. According to the research and analysis, it is found that, under the same conditions, the energy receiving rate of the tracking system of the solar power generation system is improved by the energy receiving rate of the non tracking system. So under this background, for improving solar utilization rate for the purpose, in this thesis, the design of a single-chip microcomputer K60P100 SYS as the control core, stepper motor driven transmission mechanism, through the program control, photoelectric detection constitute a feedback loop to achieve a full range of high precision intelligent dual-axis solar automatic tracking.It is first that introduce the background of the research and development of solar energy, on the basis of an analysis of the features of solar energy; and the tracking system with maximum power point tracking(MPPT) at home and abroad present situation analysis; and also introduced the study on the significance and application prospects.Secondly, this paper introduces the research of the solar system and the sun tracking system. After analyzing and selecting the system, the design of the mechanical structure and the selection of the device are also introduced. It also introduces the design circuit of solar tracking system: including motor drive circuit design, voltage and current sampling circuit design of solar panels and the cooling dust circuit design.Thirdly, the introduction of several common PV module maximum power point tracking control algorithm, simulation model based on disturbance observation method and incremental conductance method and bacterial foraging algorithm for system simulation, compare their advantages and disadvantages. Simulation results show that the bacterial foraging algorithm is faster, more stable and not misjudgment than other methods.Finally, the system device is assembled, the structure of welding and the welding circuit board are designed, the outdoor debugging and testing of the solar tracking system, and verify the rationality and accuracy of the design, at the same time, the full text of the summary and outlook, and put forward the follow-up to the need to improve the place.