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Vestas V90-3MW
The Vestas V90-3MW is a three bladed upwind wind turbine generator that uses pitch control and a doubly fed induction generator (50 Hz version). Its manufacturer claims to have installed over 500 units of this type globally since launch.〔(Vestas 3.0 MW )〕
Vestas claims the turbine povides 50% more power for roughly the same weight as the V80. The V90-3MW should not be confused with the V90-2MW, which is essentially a V80-2MW with longer blades. It is produced in both an on and offshore version.
The first V90-3MW was erected in northern Germany in May 2002. 15 test turbines were deployed around the world in different climatic conditions, so that when it went into production, the V90-3MW had been tested in more sites than the V80-2MW. Following a number of gearbox problems, the V90-3MW was withdrawn for offshore sales in early 2007 before being reissued for offshore use in May 2008.〔(''V90-3.0 MW offshore wind turbine back on the market again'', Vestas Press Release 18th Feb 2008 )〕 Presently, the nacelles are exclusively made at the Vestas Nacelles works in Taranto, Italy. Towers and blades may come from a number of locations. Vestas produces a 3.65 MW low-wind version called the V136.〔http://www.business.dk/energi/vestas-paa-vej-med-ny-landbaseret-kaempemoelle〕
==Technical details==
Towers may weigh 160 t if 80 m tall, or 285 t at 105 m (235 t in Germany).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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