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太阳能作为自然界长期的可再生能源物质,具有清洁、高效、可循环利用的特征.如今,太阳能供电系统更是利用其优势被应用在生活的方方面面,比如热水器的加热等.而视频监控系统也被高速公路机电行业从业人员发现可以应用太阳能供电来运行,使太阳能供电系统发挥其优势特点,为将来太阳能供电系统提供了发展方向,奠定了能源利用的物质基础. 相似文献
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基于固定电压法的太阳电池MPPT系统 总被引:1,自引:0,他引:1
针对太阳电池的输出特性随环境变化的特点,为提高电池的输出功率和系统效率,提出一种基于固定电压法的太阳电池最大功率点跟踪 (maximum power point tracker, MPPT)控制芯片的设计.其特点是采用模拟电路集成实现,具有结构简单、成本低、性能稳定等特点.芯片在1.5 μm BCD (Bipolar-CMOS-DMOS)工艺下设计实现,仿真验证和芯片测试结果表明,芯片性能与设计预期基本相符.采用该芯片的太阳能供电系统能够实时跟踪太阳电池的最大功率点. 相似文献
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赵耀 《太赫兹科学与电子信息学报》2022,20(8):775-780
针对铁路5G专用移动通信(5G-R)系统基站布置密集、单体功耗高的特点,结合铁路无线通信的需求,研究采用太阳能(PV)为5G-R系统基站的射频拉远单元(RRU)设备供电的方案。对比分析5G-R系统RRU设备日用电规律及太阳能电池日发电规律,确定了采用太阳能结合储能与外电源的供电体系,通过比较几种太阳能电池与外电源组合供电架构的经济性与可靠性,推荐采用直流侧切换的供电架构,并进一步提出了采用直流侧智能配电的太阳能供电方案。本研究在保证5G-R系统运行安全可靠的同时,通过采用太阳能供电方式降低了铁路5G-R系统对外电源的需求。 相似文献
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介绍了微波站采用太阳电池与市电并行供电的原理;并行供电系统中太阳电池和蓄电池用量的计算方法;以实例说明了并行供电系统中太阳电池和蓄电池用量明显地减少;最后,讨论了太阳电池与市电并行供电方式的结果。 相似文献
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阐述了小型基站采用市电供电的状况,提出小型基站太阳能供电方案,探讨太阳能供电系统组成和设备配置原则,比对太阳能与电网供电经济效益. 相似文献
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地震台站分布范围广,因此为保障地震监测工作顺利开展,需要建立无人值守智能供电控制系统保障地震监测台站长期连续监测运行,拟设计无人值守智能供电控制系统,通过光伏太阳能供电系统为设备正常运行提供电源保障,并对供电系统运行状态进行实时监测?通过无线4G实现对监测数据的实时传输。 相似文献
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根据负载的用电情况,使用地区的风能、太阳能资源,风力发电机、太阳电池和蓄电池的特性,采用计算机辅助设计(CAD)的方法,计算出系统最佳匹配条件下的系统组成方案。设计了简单可靠,功能齐全的系统控制电路。 相似文献
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太阳能光伏供电在高速公路监控中的应用 总被引:1,自引:0,他引:1
随着能源危机意识的增强,发展太阳能已经是大势所趋。太阳能光伏供电监控系统是利用太阳能组件将太阳能光能直接转换为电能,由监控中心统一控制的直流电源系统,以其节能、运行可靠、维护少、寿命长,且电能益于输送、储存的优势,将广泛的应用于高速公路监控系统中,也是将来道路监控的发展方向。 相似文献
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Results from the first year of operation of the PASP Plus flight experiment are given. The experiment consists of sixteen individual solar cell modules on twelve different panels. Both planar and concentrator technologies are represented as well as sev eral different cell types. The orbit is 363 × 2552 km at an inclination of 70°. There are two main purposes of PASP Plus: to determine the interactions between the space plasma and solar arrays biased to ±500 V and to determine the long-t erm radiation performance of a wide variety of solar cell types. © This article is a US Government work and, as such, is in the public domain in the United States of America 相似文献
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Performance limitations of silicon solar cells 总被引:1,自引:0,他引:1
《Electron Devices, IEEE Transactions on》1977,24(4):305-321
This paper discusses the performance limitations of silicon solar cells which have been identified and investigated using a detailed numerical analysis of solar cell operation. Efficiency limitations are discussed as related to doping densities, minority carrier lifetimes, widths of solar cell regions, surface recombination, antireflecting layers, and ohmic contact stripes. Areas in which improvements can be expected in performance are identified and discussed. 相似文献
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A new solar cell power supply system is presented, in which the boost type bidirectional dc-dc converter and the simple control circuit with a small monitor solar cell are employed to track the maximum power point of the solar array. It is confirmed by the experiment that the new system has sufficiently precise tracking operation performance and satisfactorily high power efficiency. Also, a comparison of the power efficiencies is made theoretically, as well as experimentally, on the new and the conventional solar cell power supply systems. As a result, it is revealed that the new system is superior to the conventional one in the power efficiency. 相似文献
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Michael A. Slonim 《Solid-state electronics》1978,21(4):617-621
The disadvantages of the equivalent diagram of solar cells in use today are analyzed. The experiments include measurements of solar cell output characteristics under normal operation conditions and also under conditions where the solar cells operate under positive and negative overvoltages. An analysis of the experiments has suggested a new equivalent diagram based on a d.c. voltage source which gives a good approximation for the whole output characteristic of a real solar cell under normal and abnormal conditions. Comparison of the experimental data and results of the theoretical and numerical analysis shows that the suggested equivalent diagram of solar cells may be very useful for analysis of processes in large d.c. systems based on solar cells. 相似文献
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The status of a-Si solar cell technology is reviewed. This review includes a discussion of the types of solar cell structure that are being used in commercial products. An overview of the development efforts under way involving new materials, such as alloys and microcrystalline films, and their impact on device performance is given. The status of stability in a-Si solar cells and projections for costs for large-scale manufacturing facilities are reviewed. The development of markets for a-Si photovoltaics is also discussed 相似文献
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The interdigitated back contact solar cell: A silicon solar cell for use in concentrated sunlight 总被引:2,自引:0,他引:2
《Electron Devices, IEEE Transactions on》1977,24(4):337-342
The theoretical and experimental performance of an interdigitated back contact solar cell is described. This type of cell is shown to have significant advantages over a conventional solar cell design when used at high concentration levels, namely, reduced internal series resistance, nonsaturating open-circuit voltage, and an absence of shadowing by front surface contacting fingers. The results of a computer study are presented showing the effects of bulk lifetime, surface recombination velocity, device thickness, contact dimensions, and illumination intensity on the conversion efficiency and general device operation. Experimental results are presented for solar illumination intensities up to 28 W/cm2. 相似文献
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Christopher Kerestes Yi Wang Kevin Shreve James Mutitu Tim Creazzo Paola Murcia Allen Barnett 《Progress in Photovoltaics: Research and Applications》2013,21(4):578-587
Transparent silicon solar cells can lead to an increased efficiency of silicon‐based multi‐junction assemblies by transmitting near and below band gap energy light for conversion in a low band gap solar cell. This analysis shows that the maximum efficiency gain for a low band gap solar cell beneath silicon at a concentration of 50 suns is 5.8%, based on ideal absorption and conversion of the photons. This work analyzes the trade‐offs between increased near band edge absorption in the silicon and silicon solar cell transparency. Application of these results to real cases including a germanium bottom solar cell is analyzed, leading to a range of cases with increased system efficiency. Non‐ideal surfaces and real silicon and germanium solar cell device performance are presented. The range of practical system gains may be as low as 2.2 – 1% absolute when compared with the efficiency of a light‐trapped silicon solar cell for 1‐sun operation, based on this work. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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Bilyalov R.R. Stalmans L. Schirone L. Levy-Clement C. 《Electron Devices, IEEE Transactions on》1999,46(10):2035-2040
The latest results on the use of porous silicon (PS) as an antireflection coating (ARC) in simplified processing for multicrystalline silicon solar cells are presented. The optimization of a PS selective emitter formation results in a 14.1% efficiency multicrystalline (5×5 cm2) Si cell with evaporated contacts processed without texturization, surface passivation, or additional ARC deposition. Specific attention is given to the implementation of a PS ARC into an industrially compatible screen-printed solar cell process. Both the chemical and electrochemical PS ARC formation method are used in different solar cell processes, as well as on different multicrystalline silicon materials. Efficiencies between 12.1 and 13.2% are achieved on large-area (up to 164 cm2 ) commercial Si solar cells 相似文献