Transcription
Solar at NightSolar LED ApplicationsMinson LuMeteor Solar LED Lighting
Contents IntroductionWhy Solar LED combined?How it worksTechnologiesAdvantagesApplications– Safety– DIY Products– Construction Q&A
Introduction Following the trend for the utilization ofalternative energy sources, solar energy hasexperienced explosive growth. Even so, at thispoint in time, from the point of view of economicefficiency, the production cost of solar energy isquite high. This is why solar power sources areoften integrated with energy efficient LEDlighting products. Market forecasts predict that by the year 2010,LED lighting market will surpass 30 million andthe predicted growth rate from 2006-2010 willreach 20%-30%.
Off-grid Solar LED Lighting MarketMillion DollarsYearSource: Strategies Unlimited
Major areas of developmentGenerally speaking developmentis occurring more rapidly in the USand Europe. However, somesuppliers also market solarpowered LED lighting products to3rd World countries or developingcountries such as India and in theMiddle East. Areas with a lack ofpublic infrastructure use acorrespondingly larger number of.solar products.
How to design a good Solar ProductLongerillumination life Good Solar Productshould have fourimportant features.IndependentsystemLower electricalconsumptionBetter Solution
Solar VS LED: practical applicationsEnergypropertiesYearinventedType ofilluminationPVLEDCapability achievedEnergy saving1950s1920sLight to electricityElectricity to lightSource: Research Institute Sustainable EnSource: Lumileds
Solar VS LED: practical applicationsPVLEDProduction/type ofelectrical currentDCDCConversionrate/amount of currentlowlow According to the above it can be seen that Solarpower is suitable to be used with LEDs for thecreation of stand alone (off grid) lighting devices.
How it works Self-contained solar powered LED lighting systems(off-grid) work by absorbing solar radiation in thedaytime, which is converted to electrical energy bypassing through the power converter. This energystored in a storage device. At night the controllerallows the stored power to be released to illuminatethe LEDs. It is safe to say that the solar power–LEDlight combination is an optimum model for energyefficient alternative lighting solutions.
How it worksSolar panelPower storageLEDPhoto sensorChargeDaytimeDischargeNight time
Technologies Solar LED Applications: the most importanttechnologies involved are shown belowSolar PanelTechnologiesLED TechnologiesPower StorageTechnologies
Solar Panel Technologies Producers of solar lighting products areconcerned with increasing the effectivenessof the solar panel--that is, how to absorb themaximum amount of solar energy with thelimited space available. The principle application methods include:– Increasing the size of the solar panel– Solar Concentrator
Solar Panel Technologies Solar ConcentratorLens Array Design Photon Engineering LLCFresnel Lens Design 2009 SPIE Energy Innovations
Solar Panel Technologies Solar ConcentratorReflector DesignHomemade Solar ConcentratorHacknMod.comDefense Industry Daily, LLC
LED Technologies The energy conversion efficiency of SolarPanels is not large. Manufacturers must takefull advantage of the limited power whencome finding the best ways to producelight. At the present time the assistance of opticsdesign software helps to make productdesign easier.
LED Technologies Optical DesignSolar energy light gathering analysisLED Light Model Analysis
LED Technologies Adjusted Control of Light DistributionCollimatingLens Design
LED Technologies Adjusted Control of Light DistributionDivergentLens Design Solar Technology
Power Storage Technologies Power Storage is indeed the greatest challengefaced in developing solar LED Lighting products. Thelifespan of Solar Panels is about 15-20 years, that ofLEDs more that 10 years, but that of traditionalbatteries only 3 years. The current most effective solutions are:– Advanced Charge Circuit Design– Ultracapacitor
Power Storage Technologies Optimized Charge Circuit Design– The special circuit designreduces the frequency of thedisc har ge of the storaged ev i c e, t h er e by a vo i d i n gproducing the memory effect.In addition the use of highquality devices extends theservice life of the storagedevice.
Power Storage Technologies Ultracapacitor– Not only does the use of the ultracapacitorincrease product stability, but it also solves themost common problem encountered with today’ssmall-sized solar products:Short Battery Life.– At the present time, ordinary batteries last about 2years, but the ultracapacitor increases the batterylife to 7-10 years.
Power Storage Technologies Comparison between Batteries andUltracapacitorsBatteryEDLCCycle Life200 1000 100000Life-Time2 3 years7 10 yearsDischarge Curve
Power Storage Technologies Comparison between Batteries and Ultracapacitors
ApplicationsSafetyLandscapeConstruction
Application Safety– Sign– Beacon– Warning light
Application Landscape (DIY Product)– Garden Light– Functional DIY Lighting
Application Construction– Solar Street Light– Solar Paver / Ground Light
Solar LED Products Demo
The EndThank you for your attention.
alternative energy sources, solar energy has experienced explosive growth. Even so, at this point in time, from the point of view of economic efficiency, the production cost of solar energy is quite high. This is why solar power sources are often integrated with energy efficient LED lighti
