本科生毕业设计(论文)
参考文献
[1] 张兴,杜少武. 电力电子技术(第一版)[M]. 北京:科学出版社,2010. [2] 康华光,邹寿彬. 电子技术基础(第五版)[M]. 北京:高等教育出版社, 2008. [3] 黄汉云. 太阳能光伏发电应用原理[M]. 北京:电子工业出版社,2009. [4] 曹振华,孔海颖.电路设计教程(第一版)[M].北京:国防工业出版社,2007 [5] 欧阳名三,梁喆,姜媛媛,王宾.DSP原理与技术(第一版)[M].合肥:合肥工业大 学出版社,2009.
[6] 沈辉,曾祖勤. 太阳能光伏发电技术[M]. 北京:化学工业出版社,2005. [7] 杨金焕,葛亮. 太阳能光伏发电应用技术[M]. 北京:电子工业出版社,2009. [8] 魏伟,许胜辉. 光伏并网逆变器的研究[J] . 电力电子技术 2008:42(11). [9] 杜飞,杜欣.电力电子应用技术的MATLAB仿真[M].北京:中国电力出版社:2009.
[10] 王凤岩,赵伟刚,许建平.单DSP控制两级变换逆变器[J].电工电能新技术 2007:26(4)
[11] 艾永乐,付子义等.模拟电子技术基础。北京:中国电力出版社,2008 [12]苏奎峰,吕强,常天庆.TMS320x281xDSP原理及C程序开发[M].北京:北京航空航天大学出版社,2008.
[13]李辉.太阳能光伏并网逆变模块的研究[D].成都:电子科技大学,2009. [14]杨金焕,于化从,葛亮.太阳能光伏发电应用技术.[M].北京:电子工业出版社,2009.
[15]李广海,叶勇,蒋静坪.IPM驱动和保护电路的研究[J].自动化与仪器仪表,2003,(12):43-35
[16] 赵争鸣 ,刘建政. 太阳能光伏发电及其应用.科学出版社2006
[17]张丽蓉.可再生能源发电的发展现状及前景[J].电力学报,2008,23(1):29-33. [18]昌金铭.国内外光伏发电的新进展[J].阳光能源,2007,1:28-31.
[19]孙焕铭,赵会成,王金 .51单片机C程序应用实例详解,北京航空航天大学出版社2011年3 月
[20] 陆兴峰,曹志峰,许洪华等.光伏发电的最大功率跟踪算法研究[J].可再生能源. 2005 (1):8-11
[21] IES TM-21-11 Projecting Long Term Lumen Maintenance of LED Light Sources,
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本科生毕业设计(论文)
2003.
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本科生毕业设计(论文)
致谢
几个月的毕业设计结束了,这次毕业设计让我学到了很多东西。毕业设计是职校四年所学知识的综合应用,为以后的工作打下坚定的基础。经过这次毕业设计,使我对太阳能电池板的工作原理有了进一步的了解。在设计中我得到了蒋华平老师的悉心指导,他的渊博知识、严格要求、严谨作风都给我留下了很深刻的印象,将使我受用一生,在此对老师表示感谢,另外在设计当中也得到了很多同学的支持,在此感谢他们。
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本科生毕业设计(论文)
附录Ⅰ
翻译:Overview of LED lighting technology
LED Summary
LED (Light Emitting Diode), light-emitting diode, is a solid state semiconductor devices, which can be directly converted into electricity to light. LED is the heart of a semiconductor chip, the chip is attached to one end of a stent, is the negative side, the other end of the power of the cathode, the entire chip package to be epoxy resin. Semiconductor chip is composed of two parts, part of the P-type semiconductor, it inside the hole-dominated, the other side is the N-type semiconductor, here is mainly electronic. But linking the two semiconductors, among them the formation of a \junction.\zone in the hole with electronic composite, and then to be issued in the form of photon energy, and this is the principle of LED luminescence. The wavelength of light that is the color of light, is formed by the PN junction of the decisions of the material. With the appearance of the White Light-Emitting Diodes, the LED also developed to be used for lighting. It is a new type of light source in the 21st century with advantages of high efficiency, long-life span and invulnerability which can not be compared with the traditional light sources. When being pressured with positive voltage, the LED can emit single-color, discontinuous light, which belongs to a kind of Organic Electroluminescent Effect. Varying the chemic component of the semiconductor material being used, we can make the LED emit a certain light which is very closed to ultraviolet radiation, visible light and infrared ray.
LED history
50 years ago, people have to understand semiconductor materials can produce light of the basic knowledge, the first commercial diodes in 1960. English is the LED light emitting diode (LED) acronym, and its basic structure is an electroluminescent semiconductor materials, placed in a wire rack, then sealed with epoxy resin around, that is, solid package, Therefore, the protection of the internal batteries can play the role of line, so the seismic performance LED good.
LED is the core of the P-type semiconductor and components of the N-type semiconductor chips, the P-type semiconductor and N-type semiconductor between a
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本科生毕业设计(论文)
transition layer, called the PN junction. In some semiconductor materials in the PN junction, the injection of a small number of carrier-carrier and the majority of the extra time will be in the form of light energy to release, thus the power to direct conversion of solar energy. PN junction on reverse voltage, a few hard-carrier injection, it is not luminous. This use of injection electroluminescent diodes is produced by the principle of light-emitting diodes, commonly known as LED. When it in a positive state of the work (that is, at both ends with forward voltage), the current flows from the LED anode, cathode, semiconductor crystals on the issue from the ultraviolet to infrared
light of different colors, light and the strength of the currents.
Instruments used for the first LED light source instructions, but all kinds of light colored LED lights in traffic and large screen has been widely applied, have a very good economic and social benefits. The 12-inch red traffic lights as an example, is used in the United States have long life, low-efficiency 140 watt incandescent lamp as a light source, it produced 2,000 lumens of white light. The red filter, the loss-90 percent, only 200 lumens of red light In the light of the new design, Lumileds companies have 18 red LED light source, including the loss of circuit, a total power consumption of 14 watts to generate the same optical effect. Automotive LED lights is also the source of important areas.
For general lighting, people need more white light sources. The 1998 white LED successful development. This is the GaN LED chip and Yttrium Aluminum Garnet (YAG) package together cause. GaN chip of the Blu-ray (λ p = 465nm, Wd = 30nm), made of high-temperature sintering of the Ce3 + YAG phosphors excited by this Blu-ray after irradiating a yellow, the peak 550 nm. Blue-chip installed in the LED-based Wanxing reflection in the cavity, covered with a resin mixed with YAG thin layer, about 200-500 nm. LED-based tablets issued by the Blu-ray absorption part of the phosphor, the phosphor another part of the Blu-ray and a yellow light mixed, can be a white. Now, the InGaN / YAG white LED, YAG phosphor by changing the chemical composition of the phosphor layer and adjust the thickness of the 3500-10000 K color temperature can be colored white. This blue LED through the method by white, constructed simple, low-cost, high technology is mature, so use the most.
In the 1960s, the use of science and technology workers semiconductor PN junction of The principle of developing a LED light-emitting diodes. At that time, the development of LED, the materials used are GaASP, its luminous color is red. After
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