英语PPT：太阳能ppt课件.ppt

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1、ESPTaskPackage3SolarPowerSolarradiationonEarthisverylarge,about40minutesofsolarIrradiationonearth.It'ssufficientforpeopleallovertheworlduseforoneyear.Solarenergyisinexhaustible.Solarpowerisabsolutelyclean,andthereisnoharm.Sosolarpowerisanidealsourceofenergy照射在地球上的太阳能非常巨大，大约40分钟照射在地球上的太阳能，

2、足以供全球人类使用一年。太阳能是取之不尽、用之不竭的。而且太阳能发电绝对干净，不产生危害。所以太阳能发电是理想的能量来源。SolarpowersystemconsistsofSolarbatteries太阳能电池组Solarcontroller太阳能控制器Storagebattery蓄电池Inverter逆变器Solarcontroller(太阳能控制器):controltheentiresystemstate,playaroleofbatterychargeprotection,overdischargeprotection(过充电保护).Intheplaceoflar

3、getemperaturedifference(温差较大)，theControlleralsohasthefunctionoftemperaturecompensation(补偿).Battery(蓄电池):StoretheenergyIssued(发出的能量)bythesolarpanelsandreleased(释放)whenneeded.Inverter(逆变器):ChangetheDCenergyIssuedbythesolarpowersystemintoACenergy.组成及作用Solarpanel(太阳能电池板):Core(核心),Itwillchange

4、thesun‘sradiation(放射、照射)energyintoelectricalenergyWhenthesurfaceofsolarcellsexposedtolight,thepartofthephotonabsorbed(吸收)bysiliconmaterial(硅材料);photon'senergytransfertothesiliconatom(原子),Theelectronelectronictransition(跃迁)andbecomeafreeelectron,onbothsidesofP-Njunction-N结)agglomeration(集聚

5、)andformed(形成)apotentialdifference(电位差),whentheexternalaccessthroughthecircuit(电路),undertheeffectofthevoltage,Therewillbeacurrentflowthroughtheexternalcircuitandproduceaoutputpower.Theessence(本质)ofthisprocess:photonenergyintoelectricalenergy.(Photovoltaiceffect光伏效应)基本原理英文版Disadvantages(1)

6、Thedensityofradiationissmall,buttakeupahugearea(2)Gettingenergyisrelatedtotheweather(3)Instabilities(4)Lowefficientandhighcost照射的能量分布密度小，即要占用巨大面积获得能源与天气有关不稳定性：效率低和成本高优点Advantages①Noriskofdepletion②Absolutelyclean③Unrestrictedusage④Highqualityenergy⑤Priceacceptable⑥Time-savingA.无枯竭危险B.绝对干净

7、C.使用不受限制D.能源质量高E.使用者容易接受F.节省时间Asearlyas1980,NASAandtheDepartmentofEnergyhaveaproposedideas,that'stobuildingasolarpowerstationsinspace,早在1980年美国宇航局和能源部就提出在空间建设太阳能发电站设想，准备在同步轨道上放一个长10公里、宽5公里的大平板，上面布满太阳电池，这样便可提供500万千瓦电力。但这需要解决向地面无线输电问题。Theywanttoputinthesynchronousorbi