irving products wind turbines website www.dewindco.com headquarter in l beck before it left in 2014 to hamburg dewind is an internationally active producer of wind power plants originating in germany . the company was founded in 1995 and is based in irving texas and hamburg germany . dewind has the legal form of a corporation and since september 2009 it has been a subsidiary company of daewoo shipbuilding and marine engineering dsme a large shipbuilder based in korea . manufacturing takes place in l beck and round rock texas . more than 900 dewind turbines have been erected worldwide with a total capacity of over 1600 mw . the company is since 2015 in liquidation an will be deleted in the german trade register in july 2016 . contents 1 turbine types 2 record holding turbines 3 see also 4 references 5 external links turbine types edit the first produced wind turbine was the d4 1996 with a capacity of 500 kw later 600 kw . in 1999 this turbine was followed by the d6 with 1 mw capacity . in 2000 the capacity of this plant was increased to 1.25 mw . 1 after a development period of two years in 2002 the d8 went into production with a capacity of 2 mw . 2 already in the mid 1990s the d4 was produced with active pitch regulation as well as a doubly fed induction generator . this technology proved itself and therefore was implemented in the following models d6 and d8 . especially advantageous are the decoupling of the rotational speed of the turbine rotor and the grid frequency . by using the inertia of the turbine rotor it reduces mechanical loads on turbine components and prevents peaks in electricity feed in . the d8 .2 has been developed based on the d8 and has been in production since 2006 . the plant has been equipped with a hydrodynamic windrive 3 gearbox . this allows the variation of the rotor speed independent of generator speed . a decoupling of generator rotation speed and grid frequency becomes redundant by this means . the synchronous generator of this turbine is coupled directly with the grid . the system is unique on the wind energy market . according to dewind it is advantageous regarding the quality of fed in electricity as well as regarding behaviour in case of grid failure . also patents of the wind turbine producer ge energy are not violated with this technology . the turbine is offered with 50 hz as well as 60 hz design . 4 record holding turbines edit dewind d8 .2 2mw wind turbine at the veladero mine in san juan province argentina the world s highest wind turbine of company dewind is located in the andes argentina to 4 100 metres 13 500 ft above sea level . turbine type d8 .2 2000 kw 50 hz was used for that site . this turbine has a new drive train concept with a special torque converter windrive of the company voith and a synchronous generator . the wind turbine was put into operation in december 2007 and has supplied the veladero gold mine of barrick gold with electricity since then . 5 6 7 see also edit wind turbine list of wind turbine manufacturers references edit technical data d6 technical data d8 technical data windrive technical data d8 .2 http www.youtube.com watch v vxym2bwudjo http www.voithturbo.com vt en pua windrive project report 2008.htm dewind d8 .2 he 50hz veladero argentina pdf . dewind . retrieved 2010 04 16 . external links edit wikimedia commons has media related to dewind . www.dewindco.com dewind inc. timelapse video on youtube showing construction of a dewind turbine for texas state technical college in sweetwater texas v t e wind power wind power environmental impact high altitude history land vehicles offshore turbines on public display windmill wind turbines aerodynamics airborne crosswind kite darrieus design floating savonius small unconventional vertical axis wind power industry consulting companies farm management manufacturers software windmade wind farms community owned farms by country offshore farms by country onshore farms concepts betz s law capacity factor eroei forecasting 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