光伏照明系统小功率LED稳压控制器的设计

一 引言 近年来,随着新能源技术的不断发展,绿色照明技术逐渐被人们所接受,利用太阳能发电实现半导体发光二极管(LED)照明已经得到了实际的应用.LED具有使用简单、成本低、效率高、发射准单色光、尺寸小、寿命长和廉价等优点,广泛用于灯具、光耦、光学仪器的光源等领域[1].     

推广高效照明产品 建设绿色照明福州

总结LED照明产品取代传统照明产品的优势、产业政策及推广经验,分析福州市LED产业发展现状及存在问题,提出福州市推广LED灯具、促进LED产业发展的对策与思路。     

绿色照明光源——LED灯具的发展简述及在上海高校应用初探

介绍了LED照明技术的发展过程和应用情况,并分析LED光源与其他照明光源灯具在技术参数和在节能、环保及使用寿命等性能指标诸多方面的优点。     

LED产品FG系列

正1基本信息产品名称:LED产品FG系列规格型号:FG系列产品类型:照明和采光系统类生产企业:森本照明有限公司2企业介绍森本照明有限公司是专业生产高光效免维护照明灯具的现代化高新技术企业。公司具备年产上百万套灯具的能力,产值达十亿元人民币。主要产品包含但不限于FG系列防爆类灯具、FG系列三防类灯具、SBD系列防爆类灯具、SBF三防类灯具、     

LED引领绿色照明新时代——北京申安投资集团有限公司

照明是重要的能源消耗之一,降低照明用电是节省能源的重要途径。灯具的发展经历了白炽灯,节胡灯到LED灯的三级跳。     

照明节能道路上的前行者——专访陕西中莱节能有限公司董事长孙建萍

根据国家半导体照明工程研发及产业联盟的相关调查,目前在国内各类型的灯具市场中都有LED照明产品,包括LED射灯、筒灯、球泡灯、直管灯、平面灯、路灯、隧道灯等。LED照明产品迎来大好的发展机会,越来越多的企业在这个市场大展身手,陕西中莱节能有限公司(简称"陕西中莱")就是其中之一。     

厦门开展节能改造升级

<正>厦门市将要在5年内完成25万盏LED路灯节能改造和190万m~2公共建筑节能改造。城市公共照明重点改造光源、灯罩和控制系统,加快推广应用LED照明产品。随着节能改造升级,厦门未来将进一步迈向绿色环保,LED灯具让厦门这个美丽的海滨城市变得更美丽。     

LED照明新一代的绿色光源

超高亮度白光LED的问世是人类照明史上一个重大的里程碑,标志着一种全新的照明光源的诞生.LED照明的高效、节能、环保、寿命长的显著特点,使其在照明领域的前景备受全球瞩目.本文简要介绍了LED的发展、特点、应用以及我国当前LED产业概况,以期能对LED照明及其产业发展有所认识.     

新产品

新型无线太阳能机场灯Carmanah科技公司最近推出了A704-5系列多功能太阳能驱动的机场用灯,灯具采用LED光源,可用于机场的永久照明、临时照明和应急照明。     

半波整流在照明中的应用

现阶段,照明用电依然占社会总电耗的25％～35％,落后的照明灯具——白炽灯仍占照明的主要成份。特别是农村,几乎全部延用白炽灯。这种照明灯具,发光效率低,易被烧损,正常使用寿命短。但是,它不需要专门的启动元器件,便于调光。就朔里煤矿而言,照明用电占企业总用电量的8％左右,年耗电量在400万KWh左右。多数家庭、楼梯照明、房道马路照明,均采用白炽灯。虽然在公用场所及一些家庭推广使用了高效节能灯,     

Off-grid energy services for the poor: Introducing LED lighting in the Millennium Villages Project in Malawi

Lanterns that use light-emitting diodes (LEDs) powered by batteries, which are in turn charged by grid electricity or small solar panels, have emerged as a cost-competitive alternative to kerosene and other fuel-based lighting technologies, offering brighter light for longer duration at equal or lower cost over time. This paper presents lessons learned from the introduction of solar LED lanterns in rural Malawi. We discuss a market-based program using new and existing local commercial structures such as vendors and cooperatives to sell lanterns to village households without subsidy. The paper addresses issues of enterprise development, community interactions, and survey data on lighting use and expenditure patterns before and after LED lantern introduction. Households that purchased a lantern reported high levels of satisfaction with the LED lanterns as well as savings in annual kerosene expenditure comparable to the price of the lantern. These households also reported monthly incomes comparable to the price of the LED lanterns whereas non-adopters surveyed reported monthly incomes about half this level, suggesting a need for financing options to maximize adoption among poorer populations in rural areas. These results suggest that similar market based models of LED lighting technology dissemination have the potential to be replicated and scaled up in other off-grid regions in developing countries. However, viability of local cooperatives and supply chains for lantern products over the medium-to-long term remain to be assessed.     

Analysis of the performance of domestic lighting lamps

The power crisis problem is getting worse in the developing countries. Measures are being taken to overcome the power shortage problem by efficiently utilizing the available power. Replacement of high-power consumption lamps with energy efficient lamps is also among these steps. This paper presents a detailed comparative analysis between domestic lighting lamps (DLLs) use for producing artificial light. DLLs include incandescent lamp (IL), fluorescent lamp (FL) and compact fluorescent lamp (CFL). Light emitting diodes (LED) based lamp technology is relatively new in comparison with conventional incandescent and discharge lamps. However, the present study will also cover the LED lamps. Power quality based experiments have been conducted on DLLs in Power System Laboratory and power consumption based calculations are carried out using the lighting design software DIALux. The result shows that with the current technology, the use of FL and LED lamp is beneficial for utility as well as for consumer. However, with the current pace in the development of LED technology, it is possible LED lamps will lead the lighting market in the near future. The paper has also presented the uncertainties that exist in lighting market and proposed the guidelines that will help in making future energy policy.     

Environmental and economical impact of LED lighting systems and effect of thermal management

Solid‐state lighting (SSL) technologies such as light emitting diodes (LEDs) have been of interest for the last 15 years. This article focuses on inorganic LED technology and their evolving applications, energy efficiency, and economic impact as well as the effect of thermal management on LED lighting systems. The efficacy of the best commercial 1 W LED packages currently surpasses 120 lm/W, which is more efficient than typical metal‐halide and fluorescent lamps. This high efficacy will eventually allow LED lighting systems to be used in specialty and general illumination applications. However, higher lumen requirements for LED systems will inevitably lead to significant thermal challenges at both the chip and the system level that need to be addressed to enable practical applications at low costs. In this article, the basics of LED lighting will be discussed first. It will be followed by the potential economic benefits for high efficiency LED lighting systems in the general illumination market. We will then discuss the thermal challenges and possible candidate cooling technologies in LED lighting systems. Copyright © 2009 John Wiley & Sons, Ltd.     

LED照明在输油气管道站场的应用效果与经济效益分析

在一输油站场内更换4盏LED防爆灯,取代原防爆高压气体钠灯进行试验,验证其照明效果、节电效果、安全性和可靠性等是否达到站场要求。结果表明,从现场照明效果、节电效果、安全性和维护量等方面对比,防爆LED灯照明性能均优于防爆金属钠灯。经济效益分析表明:更换LED节能灯投资回收期为运行4.54 a左右,节约的电能和日常维护费用即可收回投资成本,节能效益显著;如果新建站场时直接采用LED防爆灯,则节能效果更明显。绿色照明技术在输油气管道站场具有良好的推广应用前景。     

Economic feasibility of solar-powered led roadway lighting

The optical efficacy of light emitting diode (LED) has exceeded 72 lm/W in 2006. This implies that energy can be saved about 75%, as compared to mercury lamps widely used in roadway lighting. In some remote areas where the grid power cannot reach, independent solar-powered lighting using high-power LED provides a promising solution. However, the cost of solar photovoltaic device may cause the application of solar-powered LED roadway lighting to be not economically feasible.The present study investigates the design of the solar-powered LED roadway lighting using high-power LED luminaire (100 W) and estimates the installation cost for a 10 km highway with 2 lanes. LED luminaries are installed on both side of the road with staggered arrangement. The pole distance is 30 m. The cost comparison of LED lighting using grid and solar power with the conventional mercury lamps was carried out. It shows that the installation cost is 22 million USD for LED powered by grid power and 26 million USD for solar-powered. The total installation cost of conventional mercury lighting is 18 million USD. The excess cost of LED mainly comes from the cost of LED lamp and solar PV. But, the cost of power generation and electrical transmission line can be greatly reduced since about 75% energy was saved for LED. This permits the use of smaller copper wire and shorter line length for solar-powered system which in turn saves installation cost. The payback time for the excess investment of LED is 2.2 years for LED using grid power and 3.3 years for LED using solar power.     

An overview of energy efficient solid state LED driver topologies

LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.     

太阳能发电在新农村中的应用探讨

为了探讨研究太阳能发电技术在新农村建设中的应用前景,本文以安徽省马鞍山市博望镇三杨村为研究对象,通过问卷调查和实地调研方法对该村的能源消费和建筑能耗等情况进行了解,并以太阳能光伏发电技术中的LED路灯照明系统为例,将新型太阳能LED路灯和传统高压钠灯系统在造价成本和节能减排等方面进行比较分析.结果表明:在造价成本方面,...     

Potential of new lighting technologies in reducing household lighting energy use and CO2 emissions in Finland

Using light-emitting diodes (LEDs) can significantly reduce the current household lighting energy use in Finland during 2020–2050. Our calculations show that the potential of using LEDs in reducing household lighting energy use and corresponding CO₂ emissions in Finland during 2020–2050 can be significant. Reductions from the current level of Finnish household lighting energy use (1.8 TWh/a) were 59 % in 2020, 72 % in 2030 and 78 % in 2050, when a high LED penetration was assumed. Lighting energy savings in 2020 would mean a 1.3 % reduction from the current total electricity use in Finland (84.2 TWh/a). The starting point in 2012 was that the share of incandescent lamps was 32 % and the share of LED lamps 6 % of the total amount of lamps in an average household. Using the current average emissions factor (current electricity production structure), the saved amount of energy in 2020 means 234,000 tonnes of CO₂. Using the marginal emissions factor, the saved amount of energy means 920,000 tonnes of CO₂ emissions.     

Energy efficient lighting meets real home life

Will the phase-out of inefficient lighting in the European Union (EU) lower consumption of residential electricity significantly? Will light-emitting diode (LED) light replace other technologies for lighting in the near future? Implementation of the phase-out decision in the EU will push demand for efficient lighting technologies. One of the most efficient types, light-emitting diodes, promises even greater reductions than CFLs. However, in order to reap the gains from LEDs they must replace existing lamps and luminaires. This paper reports the findings from tests of LED lights in real homes. It points at the limits of the LED technology at sale in the market today, and the risk for a rebound effect. This paper also addresses the more general issue of theoretical development in the area of residential use of electricity. A “frame of interpretation” is presented in which the use of the lighting set in a home is the foundation. From this, sociotechnical and path-dependent aspects on technical and cultural inertia and marginal change can be developed.