風(fēng)電葉片氣動(dòng)設(shè)計(jì)2Bladesvs3Blades:AnnualYieldandRotorWeightDifference雙葉VS三葉：年發(fā)電量和葉片重量的差距

SubjectPresentation主題報(bào)告Aerodynamicdesign

氣動(dòng)設(shè)計(jì)2.Structuraldesign

結(jié)構(gòu)設(shè)計(jì)3.Conclusion

結(jié)論

Thetrendsinaerodynamicdesign:氣動(dòng)設(shè)計(jì)的趨勢：HigherRPMTipSpeedRatio(TSR)increase更快的轉(zhuǎn)速

葉尖速比（TSR）的提升

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

Thetrendsinaerodynamicdesign:氣動(dòng)設(shè)計(jì)的趨勢：HigherRPMTipSpeedRatio(TSR)increase更快的轉(zhuǎn)速

葉尖速比（TSR）的提升Developmentofmoreefficientairfoils:lift/dragincrease開發(fā)效率更高的翼型：升力/阻力的提升

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

Thetrendsinaerodynamicdesign:氣動(dòng)設(shè)計(jì)的趨勢：HigherRPMTipSpeedRatio(TSR)increase更快的轉(zhuǎn)速

葉尖速比（TSR）的提升Developmentofmoreefficientairfoils:lift/dragincrease開發(fā)效率更高的翼型：升力/阻力的提升Longerbladesincreaseoffullloadhours更長的葉片

滿發(fā)小時(shí)數(shù)的提升

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

Toquantifythesetrendsonaerodynamicefficiencies,thefollowingequationcanbeused:為了量化這些趨勢對氣動(dòng)設(shè)計(jì)的提升，可以用以下方程進(jìn)行計(jì)算：

Tiploss:B,TSR 葉尖損失：B，TSR

Wakeloss:TSR 尾流損失：TSRProfiledrag:TSR,Cl/Cd 翼型阻力：TSR，Cl/CdAerodynamicDesign1.氣動(dòng)設(shè)計(jì)

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

更高效的翼型帶來的氣動(dòng)效率提升Lift/dragincrease升力/阻力提升Lift/dragincrease升力/阻力提升更高效的翼型帶來的氣動(dòng)效率提升Cl/Cd=100AerodynamicDesign1.氣動(dòng)設(shè)計(jì)Differenceinefficiency效率的差值3B2B三葉與雙葉氣動(dòng)效率的差別

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

三葉形與雙葉形效率的比率Concluding:3Brotorhashigherefficiencythan2bladedCpisgoingfrom2.5%to1.5%withbladedevelopment

結(jié)論：三葉形系統(tǒng)的效率更高Cp隨著葉片的發(fā)展，從2.5%降到了1.5%。

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

Concluding:3Brotorhashigherefficiencythan2bladedCpisgoingfrom2.5%to1.5%withbladedevelopment

Cppoweryieldadvantage=power*hoursf(length^1.7)*C1結(jié)論：三葉形系統(tǒng)的效率更高Cp隨著葉片的發(fā)展，從2.5%降到了1.5%。Cp發(fā)電量

年發(fā)電量優(yōu)勢=發(fā)電量*發(fā)電小時(shí)f(長度的1.7次方)*C1

AerodynamicDesign1.氣動(dòng)設(shè)計(jì)

Advantage3BladedAerodynamicdesign

氣動(dòng)設(shè)計(jì)

2.Structuraldesign

結(jié)構(gòu)設(shè)計(jì)3.Conclusion

結(jié)論

Content內(nèi)容Weight(oftherotorbladestogether)Aero-elasticbehaviourTiptotowerclearanceCostsoftherotorbladestogether1.重量（一套葉片）2.氣彈表現(xiàn)3.塔尖距4.葉片成本（一套葉片）

2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

manybladesstillglass很多葉片還用的是玻纖Sofar,wetrytokeepthestructuraldesignofrotorbladewithglass.到目前為止，我們盡量保持葉片僅使用玻纖。2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

用玻纖大梁的葉片三葉形重量雙葉形重量（一套）ForBOMcostof3Bvs2B,thesameratioisseen!從材料成本的角度來看，對比比例也是一樣的。

2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

用玻纖大梁的葉片三葉形重量雙葉形重量三葉形成本雙葉形成本（一套）Trendsforfuture(bigger)rotor-bladesshow:未來（更大）葉片的發(fā)展趨勢表明：WeightAeroelasticbehaviourTiptotowerclearanceProductiontechnology重量氣彈表現(xiàn)塔尖距生產(chǎn)技術(shù)

highercosts!“Carbon”2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

“碳纖”

成本更高2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

用碳纖大梁的葉片三葉形重量雙葉形重量（一套）2.StructuralDesign2.結(jié)構(gòu)設(shè)計(jì)

用碳纖大梁的葉片三葉形重量雙葉形重量三葉形成本雙葉形成本（一套）Thecostadvantageforthe2bladedrotorproductioncanbederivedasfunctionofthelength Mass.Price/kgf(length^2.3)*C2雙葉形系統(tǒng)在生產(chǎn)時(shí)的成本優(yōu)勢與葉片長度相關(guān)

重量*價(jià)格/公斤f(長度的2.3次方)*C2

2.Structuraldesign2.結(jié)構(gòu)設(shè)計(jì)Concluding:costpersetofbladeis35%lowerfor2bladedrotorthan3bladedrotorwithcarbongirder結(jié)論：一套雙葉形系統(tǒng)的材料成本比三葉形低35%。（碳纖大梁）Advantage2BladedAerodynamicdesign

氣動(dòng)設(shè)計(jì)

2.Structuraldesign

結(jié)構(gòu)設(shè)計(jì)3.Conclusion

結(jié)論

Content內(nèi)容3.Conclusion3.結(jié)論Break-evenlength長度平衡點(diǎn)0.49RMB/kWhAdvantage3.Conclusion3.結(jié)論Break-evenlength長度平衡點(diǎn)0.49RMB/k