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What is the history of wind turbine?

Megawatts of the first wind turbine on Grandpa's Knob size, Castleton, VermontWind machines were used for grinding grain in Persia as early as 200 BC This type of machine was introduced in the Roman Empire in 250 AD In the 14th century Dutch windmills were in use to drain areas of the Rhine River Delta. In Denmark, in 1900 there were about 2500 windmills for mechanical loads such as pumps and mills, producing estimated combined peak power of over 30 MW. The first windmill for electricity production was built in Cleveland, Ohio, by Charles F. Brush, in 1888, and in 1908 there were 72 wind power from 5 kW to 25 kW (7-34 hp). The larger machines were at 24 m (79 m) with four leaf towers 23 m (75 ft) rotor diameter. In the 1930s windmills were mainly used to generate electricity on farms, mainly in the United States where distribution systems had not yet been installed. During this period, high tensile steel was cheap, and windmills were placed above prefabricated steel lattice towers opened. A forerunner of modern horizontal-axis wind generators was in service at Yalta, USSR in 1931. This was one of 100 kW (130 CV) in the generator of 30 m (100 ft) tower, connected to the local distribution system of 6.3 kV. Was reported to have an annual load factor of 32 percent, no different much of the current wind machines. In 1941 MW, size first wind turbine was connected to local electric distribution system in Grandpa Knob in Castleton, Vermont. This 1.25 MW (1,680 hp) Smith-Putnam turbine operated for 1100 hours before a road not in a known weak point, which was not enhanced due to war-time material shortages. In the 1940s, the U.S. had a rural electrification project that killed the natural market for the generation wind energy, since the power distribution network provided a farm with more dependable usable energy for a given amount of investment capital. In the 1970s many people began to desire a self-sufficient life style. The solar cells are too expensive for small power generation, so some turned to windmills. At first they built ad hoc design of wood and car parts. Most people found that a reliable wind generator is a moderately complex engineering project, well beyond the ability of most romantics. Some began search and reconstruction of generating wind farms in the 1930s, of which Jacobs wind generators were particularly sought. NASA / DOE 7.5 megawatt Mod-group 2 three turbines at Goodnoe Hills, Washington, 1981From mid-1970 until mid-1980 the U.S. government worked with industry to advance the technology of and allow large commercial wind turbines. This effort was led by the National Aeronautics and Space Administration (NASA) Lewis Research Center in Cleveland, Ohio, and was extraordinarily government research and development success. With funding from the National Science Foundation and later the Department of Energy (DOE), a total of 13 experimental wind turbines put into operation, including four wind turbine designs important. This research program and pioneering development in many of the technologies in multi-megawatt turbines use today, such as the steel tube towers, variable speed generators, material of the compound leaf, partial design capabilities span pitch control and the aerodynamic, structural, acoustic and engineering. The large wind turbines developed under this effort several world records for diameter and power output. The Mod-2 wind turbine cluster produced a total of 7.5 megawatts power in 1981. In 1987, the Mod-5B was the largest operating wind turbine in the world with a rotor diameter of almost 100 meters and a power rating of 3.2 megawatts. He has shown an availability of 95 percent, a record of a new unit first wind turbine. The Mod-5B was the first large-scale railway variable high speed and a sectional unit, two-bladed rotor that allowed easy transport of the blades. Later in the 1980s, California tax relief under for environmentally friendly power. These rebates funded the first major use of wind power for utility electricity. These machines, gathered in parks A large scale wind farms in Altamont Pass would be considered small and UN-economic development of modern standards of wind power. In the decade 1990 as aesthetics and durability became more important, turbines were placed atop steel or reinforced concrete towers. Small generators are connected to the tower on the floor, then the tower is raised into position. The larger generators are hoisted into position atop the tower and is not a ladder or stairway inside the tower to allow technicians to reach and maintain the generator. Originally wind generators were built next to where its needed power. With the availability of long distance power transmission, wind turbines are often in places wind farms and large wind are being built offshore, sometimes transmitting power to earth using high voltage submarine cable. Because wind turbines are a means of generating electricity renewable, they are widely deployed, but their cost is often subsidized by taxpayers, either directly or through energy credits renewable. Much depends on the cost of alternative sources of electricity. Wind turbine power unit cost has been reduced by about four percent a year. [Edit] The companies market the industry's Global wind turbine wind power plants in 2003ABB Ltd. – wind turbine generators [3] Airtricity – only operates AWS Truewind turbines, LLC [4] – Wind Energy Consultants Bergey Windpower [5] Det Norske Veritas – Certification of wind turbines and wind turbine projects Ecotècnia DeWind SCCL – Spanish manufacturer Eclectic Energy Ltd [6] – British manufacturer of small wind turbines, including those linked to the network Eirbyte STEALTHGAS turbine [7] – Suppliers of small turbines in Ireland EMD A / S – WindPro software package for design and planning of wind turbine projects Emergy Technologies [8] Enercon GmbH, Germany – wind turbines up to 6 MW ENFOR, Solutions for wind power forecasting Eoltec [9], France – manufacturer of wind turbines from 6 kW to 250 kW Gamesa Corporacion Tecnologica Garrad Hassan and Partners Ltd., General Electric, through its subsidiary GE Energy Company Green [10] – Small Network Installers connected wind turbines in the UK domestic Hansen Transmissions Int – Provider of multiple units of MW wind turbine gear [11] O'Connor Hush Energy [12] – Australian supplier of small turbines quiet electronic kk / s [13] – Installation of control of LM Glasfiber A / S – rotor blades ranging from 13.4 to 61.5 m http://www.massmegawatts.com Movento Massmegawatts Oy – Movento provides leading technology of mechanical power transmission energy and process industries [14] Natural Power – wind energy consulting services NEG Micon International – Fusion with Vestas in 2004 Nordex Pauwels Trafo Belgium v Spain [15] – Large Wind Turbine Generator Manufacturers Power Transformer PB – Global Engineering services company REpower energy industry, Germany – wind turbines up to 5 MW Selsam Innovations / Superturbine Inc. of California multi-rotor wind turbine http://www.selsam.com Siemens Wind Power A / S (formerly Bonus Energy A / S) Southwest Windpower [16] Suzlon Energy Ltd [17] Valmont Wind Energy, Inc. – modular tower systems for MW wind turbines. Sustainable living projects — Micro wind turbines Vergnet Consulting South Africa – French manufacturer of wind turbines of 30 years of work by 5 kW to 250 kW wind turbines Vestas Wind Systems, Denmark – The world's largest producer of wind turbines – wind turbines up to 4.5 MW [18] Wind Harvest – The makers of straight bladed, vertical axis wind turbines Prospect – Independent wind energy development in the UK and Australia Windside – Wind Energy Solutions for Extreme Conditions of WindSim AS – WindSim software package for simulating field Wind WinWind Oy – Manufacture of 1 and 3 MW turbines based in Finland [19] Soytes Clean Energy and Electrotechnics Inc. [20]

Very tall towers for wind turbines – a new generation.

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