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A Tutorial on the Dynamics and Control of Wind Turbines ...

Windenergyiscurrentlythefastest-growinge n-ergysourceintheworld, power, , , , ,theinstalledcapacityofwindgrewatanavera gerateof29%peryearovertheyears2002-2007[ 1].Attheendof2007,theinstalledcapacityin theUnitedStateswasnearly17,000megawatts( MW)andtheworldwideinstalledcapacitywasov er94,000MW( ).Windisrecognizedworldwideasacost-effec tive, [1],thatfigureinDenmarkismorethan15%[2]. [3]laystheframeworkforachieving20% ,manufacturing,transmissionandintegratio n,market,environmental, theinstalledcapacityofwindturbinesinrece ntyears, ,thetypicalsizeofutility-scalewindturbin eshas growndramaticallyoverthelastthreedecades ( ).Modernwindturbinesarelarge,flexiblestr ucturesoperating sworkwassupportedinpartbytheUniversityof ColoradoatBoulderEnergyInitiative, ,theMillerInstituteforBasicResearchinSci enceattheUniversityofCaliforniaatBerkele y, (NSFG rantCMMI-0700877).KathrynJohnson (NSFG rantECCS-0725752). [Graphreproducedfromdatain[4]] byincreasingtheeffi-ciency,andthustheene rgycapture, , ,wewillfocusonhorizontal-axiswindturbine s(HAWTs) theentirerotorcanbeplacedatopatalltower, ,improvedpowercaptureandstructuralperfor mance,andnoneedforguywires(whicharetensi onedcablesusedtoaddstructuralstability).

A Tutorial on the Dynamics and Control of Wind Turbines and Wind Farms Lucy Y. Pao and Kathryn E. Johnson Abstract—Wind energy is currently the fastest-growing en- ergy source in the world, with a concurrent growth in demand

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