A windsturbine with their harvests the energy of winds rotor, converts it into electrical energy and feeds it into power grid. Also use the designations winds power plant, sometimes winds power converter (CHP), colloquially windsturbine or winds mill (wind turbine maintenance Idaho). Small plants that can be economically isolated operation are treated under winds generator; winds-driven pumps.
Like all machines can not reach windsturbines, the theoretical maximum. Aerodynamic losses resulting from air friction on the leaves, by vortices at the blade tips and swirl in wake of rotor. In modern systems, these losses reduce the power coefficient of cp, Betz 0.593 on cP equals 0.4 to 0.5. Of above 320 W / m ie up to 160 W / m expected. A rotor with 113 m diameter (10,000 m) is then 1.6 megawatts to shaft. To calculate the power at the mains addition, the efficiencies of all mechanical and electrical parts must still be considered.
Its simple, rugged design with a vertical axis of ten meters high and four arranged on a circle of eight meters in diameter Sailing a modest efficiency. Almost simultaneously, Charles F. Brush in Cleveland, Ohio oriented with a 20-meter-high plant at the time quite advanced windsmill technology. When it comes mills rather than on the torque on the speed; Brush used a two-stage translation with belt drives to drive a 12 kW generator.
To estimate the annual income the so-called average windspeed is given for the location windsturbine. It is an average winds velocities occurring over the year. The lower limit for the economic operation of a system is dependent on the feed-in tariff, at an average windspeed of 5-6 m / s at hub height. However, other factors need to be considered.
Parallel to sit down - as in automotive industry has long been standard - modular platform strategies through, which are developed on the same technical basis of plant types or variants for different winds classes; z. B. By different rotor sizes with largely identical or different powertrain concepts generator with the same rotor diameter.
To a renaissance of winds energy came from the 1970s, among others as a result of environmental and energy debate and two oil crises. In some countries (such as Germany and the USA, among others) were reacted first to demanding industrial projects such as the two-leaf GROWIAN; but these had major technical problems and proved to be failures.
The exported also to thousands in 1980s in US plants had three rigid rotor blades (= no rigid blade angle adjustment) and a grid-connected inverter without phase machine with one or two fixed speeds. The capacity limitation was performed by flow separation. Archetype of this very successful concept was designed by Johannes Juul and in 1957 commissioned in Gedser windsturbine. It worked reliably up to its preliminary decommissioning in 1966 and was in late 1970s put back into service for a joint test program by scientists and NASA .
Their rated power, sometimes called the installed capacity reaches a windsturbine at the rated windsspeed. In capacity of plant is kept constant in order to avoid overloading. At very high windsspeeds (storm), the system is completely switched off. With a slight crescent shape in outer region of rotor blades soft gusts from the blade tips to leeward. The associated distortion of sheets reduces the angle of attack and therefore the winds load. Accordingly, material can be saved
Like all machines can not reach windsturbines, the theoretical maximum. Aerodynamic losses resulting from air friction on the leaves, by vortices at the blade tips and swirl in wake of rotor. In modern systems, these losses reduce the power coefficient of cp, Betz 0.593 on cP equals 0.4 to 0.5. Of above 320 W / m ie up to 160 W / m expected. A rotor with 113 m diameter (10,000 m) is then 1.6 megawatts to shaft. To calculate the power at the mains addition, the efficiencies of all mechanical and electrical parts must still be considered.
Its simple, rugged design with a vertical axis of ten meters high and four arranged on a circle of eight meters in diameter Sailing a modest efficiency. Almost simultaneously, Charles F. Brush in Cleveland, Ohio oriented with a 20-meter-high plant at the time quite advanced windsmill technology. When it comes mills rather than on the torque on the speed; Brush used a two-stage translation with belt drives to drive a 12 kW generator.
To estimate the annual income the so-called average windspeed is given for the location windsturbine. It is an average winds velocities occurring over the year. The lower limit for the economic operation of a system is dependent on the feed-in tariff, at an average windspeed of 5-6 m / s at hub height. However, other factors need to be considered.
Parallel to sit down - as in automotive industry has long been standard - modular platform strategies through, which are developed on the same technical basis of plant types or variants for different winds classes; z. B. By different rotor sizes with largely identical or different powertrain concepts generator with the same rotor diameter.
To a renaissance of winds energy came from the 1970s, among others as a result of environmental and energy debate and two oil crises. In some countries (such as Germany and the USA, among others) were reacted first to demanding industrial projects such as the two-leaf GROWIAN; but these had major technical problems and proved to be failures.
The exported also to thousands in 1980s in US plants had three rigid rotor blades (= no rigid blade angle adjustment) and a grid-connected inverter without phase machine with one or two fixed speeds. The capacity limitation was performed by flow separation. Archetype of this very successful concept was designed by Johannes Juul and in 1957 commissioned in Gedser windsturbine. It worked reliably up to its preliminary decommissioning in 1966 and was in late 1970s put back into service for a joint test program by scientists and NASA .
Their rated power, sometimes called the installed capacity reaches a windsturbine at the rated windsspeed. In capacity of plant is kept constant in order to avoid overloading. At very high windsspeeds (storm), the system is completely switched off. With a slight crescent shape in outer region of rotor blades soft gusts from the blade tips to leeward. The associated distortion of sheets reduces the angle of attack and therefore the winds load. Accordingly, material can be saved
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