1. 毕业设计（论文）的内容和要求
In line with the need of sustainable development, energy conservation and environmental protection, the factory will research a set of LED lighting power supply system based on renewable energy. Solar energy is a clean, pollution-free, rich enough energy, has a wide application prospect with wind energy.The direction and intensity of the sun light vary with time, seasons and weather. The solar panel needs to keep perpendicular to the sun light to get full absorption of the sun energy and increase power.A light-source-tracking control system for a solar panel is designed to maximize the use of the energy of the sun.Outdoor or indoor LED lighting can be powered by solar energy, but in rainy days or seasons with insufficient sunshine, continuous energy supply needs to be achieved in the form of solar power complemented with electric energy.The paper needs to choose a single chip microcomputer or PLC controller, design hardware circuit (light intensity detection, conversion circuit, azimuth-detection and conversion module, different energy supply automatic switching detection module) , along with software programming, to achieve automatic switch between solar power supply with the automatic tracking control system and electricity power supply.The student needs to design and develop a LED lighting power supply system which is based on the light source tracking solar energy and the electrical energy as a complement. Besides, two energy supplies can switch automatically according to the weather and sunshine condition.For the solar power supply system, a single chip microcomputer can be used as control element when designing automatic light source tracking control system. That, the solar panels can real-time track angle of solar azimuth and altitude, improving utilization.Automatic control principle, single-chip microcomputer technology, circuit principle, analog and digital electronic technology should be applied skillfully during the graduation. The student should master the working principle of the system and design the different modules of the hardware circuit, code and debug on the microcontroller. The key technologies including solar tracking control module, alarm display module, switch module and so on.The research direction of the subject has very important practical application value, can improve the utilization rate of solar energy resources to achieve higher economic benefits, and can effectively protect the environment.1. Review the literature and communicate with the adviser, consider repeatedly according to the actual situation of the application, and sort out the functions of the LED power supply system.2. Complete the literature review and the thesis proposal after understanding completely the current situation of solar panel utilization, the related control technologies , and the application of two complementary technologies3. Carry out the detailed design of each functional module according to the system functional requirements.4. Design hardware circuit (light intensity detection, conversion circuit, azimuth and altitude angle detection and conversion module, automatic switching detection module for different energy supply). Software programming ( to achieve automatic switch between the automatic tracking control of solar energy supply and electric power).5. Appropriate simulation software is selected for circuit simulation. Complete module function simulation test and coordination.6. Complete the graduation thesis, presentation anddefend your dissertation
2. 参考文献
[1]Salah Abdallah, Salem Nijmeh, "Two axes sun tracking system with PLC control", Energy conversion and management, vol. 45, no. 11-12, pp. 1931-1939, 2004.[2]C. Alexandru, C. Pozna, "Simulation of a dual-axis solar tracker for improving the performance of a photovoltaic panel", Proceedings of the Institution of Mechanical Engineers Part A: Journal of Power and Energy, vol. 224, no. 6, pp. 797-811, 2010.[3] Ral Gregor ; Yoshihico Takase . "A novel design and automation of a biaxial solar tracking system for PV power applications". IEEE,IECON Annual Conference of the IEEE Industrial Electronics Society, Vienna, Austria Nov.2013[4] H. Mousazadeh, A. Keyhani, A. Javadi, H. Mobli, K. Abrinia, A. Sharifi, "A review of principle and sun-tracking methods for maximizing solar systems output," in Renewable and Sustainable Energy Reviews, Oct. 2009, Volume: 13, Issue: 8, pp. 1800-1818. [5] K. Ding, X. Bian, H. Liu, T. Peng, "A MATLAB-Simulink-Based PV Module Model and Its Application Under Conditions of Nonuniform Irradiance," in IEEE Transactions on Energy Conversion, Dec. 2012, Volume: 27, Issue: 4, pp. 864-872.[6] Nurzhigit Kuttybay ; Saad Mekhilef . " An Automated Intelligent Solar Tracking Control System With Adaptive Algorithm for Different Weather Conditions". IEEE International Conference on Automatic Control and Intelligent Systems, Selangor, Malaysia, June 2019[7]A. Z. Hafez, A. M. Yousef, N. M. Harag, "Solar tracking systems: Technologies and trackers drive typesA review", Renewable and Sustainable Energy Reviews, vol. 91, pp. 754-782, 2018..[8]CemilSungur. "Multi-axes sun-tracking system with PLC control for photovoltaic panels in Turkey". Renewable Energy,Vol 34, pp. 1119-1125, 2009[9]Y. J. Huang, B. C. Wu. "Solar Tracking Fuzzy Control System Design using FPGA". Proceedings of the World Congress on Engineering , Vol I WCE 2009, July, 2009, London, U.K. [10]CHEN Y M，LIU Y C，WU T F. "Multi-input DC/DC converter based on the multiwinding transformer for renewable energy applications". IEEE Trans on Industry Applications， 2002， 38 (4):1096-1104.[11]B. Koyuncu and K. Balasubramanian, A microprocessor controlled automatic sun tracker, IEEE Trans. Consumer Electron., vol. 37, no. 4, pp. 913-917, 1991.In addition to these papers, please refer to no less than 20 literatures by yourself.
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