【作者】 董博；

【导师】 李岩； 王胜辉；

【作者基本信息】 沈阳工业大学 ， 电机与电器， 2011， 硕士

【摘要】 目前,能源危机和环境污染在全球范围内都是引人关注的重大课题,所以世界各国都在寻找一种既能解决能源储量问题,而又不会带来环境污染的绿色能源。太阳能作为新能源的重要组成成员,其最大的特点就是永不枯竭和无污染,所以近年来受到各方的重视得以迅速发展,主要发电形式为光伏并网发电。很多资料显示,不久将来太阳能将成为人们生活中最主要的能源渠道。现阶段,受制于太阳能利用率不高导致使用成本偏高而无法普及,基于此,本文引入模糊逻辑控制理论,利用MATLAB软件的模糊逻辑控制箱设计了三维和二维模糊逻辑控制器,以及利用simulink针对光伏最大功率点跟踪进行了仿真,通过对比MPPT仿真结果在稳定性,精确性和快速性上的差异,分析其原因,尽最大可能的提高太阳能的利用率。本文设计了不带隔离变压器的Boost型DC-DC变换器,在系统要求的稳压范围内,进行了仿真,输出符合要求；给出了单相光伏逆变器的工作原理及控制策略,并进行了仿真,输出正弦交流电压结果良好。在软件控制方面应用了PI调节控制,后又分析了锁相环控制技术,并将其应用于逆变电路,使并网电流与电网电压同频同相。最后,设计完成了基于DSP芯片TMS320F2812的光伏并网发电系统,通过MATLAB/simulink对整个系统进行了仿真,仿真结果符合要求,同时研制了光伏系统控制器,并进行了初步实验。更多还原

【Abstract】 At present, the energy crisis and environmental pollution in the global scope are compelling major subject, so many countries in the world are finding a kind of green energy method which can solve the energy reserves problem and can’t bring environmental pollution. As the important component members of the new energy, the solar energy’s biggest characteristic is never dried up and no pollution. In recent years,with the attention of all parties, the solar energy develop rapidly whose the main power form is photovoltaic (pv) grid generation. Many data shows that the near future solar comprehensively will become the most major energy channels in the life.Now, the subject on the solar energy utilization rate is not high,then cause the use of higher cost and not popularization. Based on it, the paper gives a fuzzy logic control theory by the MATLAB fuzzy logic control box which design three-dimensional and two-dimensional fuzzy logic controller, and using simulink for photovoltaic maximum power point tracking is simulated. Through comparing the MPPT simulation results in the differences of stability, accuracy and quickening, and then analyze the causes, and to the most possible improvement of solar energy utilization.This paper gave the Boost type DC-DC converter working principle, in the scope of the system requirements on voltage stability, the author have simulated and the output meets the requirement. It also gave single-phase photovoltaic inverter and working principle of the control strategy, and simulation, the output of sinusoidal alternating voltage yielded is good results. This paper introduces the control PI in spect of the software, then adjust control are introduced and phase lock loop control technology, and applied the inverter circuits, make the interconnection of electric current and voltage with frequency with phase.Finally, through MATLAB/simulink to the whole system is simulated, the design completed based on DSP TMS320F2812 of photovoltaic (pv) grid power system, and the simulation results accord with the requirement. Meanwhile developed photovoltaic system controller, and makes a preliminary experiment.更多还原