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Wind energy - wind power: topics  related subjects: Environment: Energy, Asynchronous generator, Synchronous generator
Aerodynamic design of a windmill Blade Design, Airfoil Design
Aérodynamique des turbines éoliennes pdf file
Aerodynamic Forces: Definitions of Lift and Drag
Aerodynamics Basic Aerodynamics, Lift, Drag, and the Inevitable Consequences of Gravity, Airfoils and Lift - Getting High on Air, High Lift Devices - Inflight Modifications to the Wing, Drag - The Only Thing Holding You Back, Thrust - The Thing That Makes It All Possible
Aerodynamics of Windmill Blades The optimum twist of a windmill blade is examined on the basis of elementary blade-element theory, pdf file
Aerodynamics of wind turbines drag force, lift, rotor blades, wind turbines, drag force formula, Reynolds number, Aerodynamics of wind turbines
Aerodynamics of Wind Turbines: Drag
Aeroelastic Simulation of Wind Turbine Dynamics
Airfoils for windmills Aerodynamic Design of a Windmill
Betz' law Betz' law is a theory about the maximum possible energy to be derived from a "hydraulic wind engine", or a wind turbine
Calculation of wind-power density Calculation of Wind Energy and Power, pdf file
Calculation of Wind Power Density
Changing generator rotational speed
Comparison of different 600 kW designs of a new permanent magnet generator for wind power applications pdf file
Determining wind power density and wind power classes from wind speed information
Estimating and calculating air density pdf file
Example for the Technological Development of a New Wind Turbine
Fans and wind power the most significant difference between air and water in regard to energy is that they are very different in density. Water is about 800 times as heavy as air, volume for volume. This means that energy is much more tightly packed in water, so that water machines can be conveniently small. Air machines, on the other hand, must handle large volumes of air, and so are large and cumbersome
Fluid dynamics explore the advantages of liquids over gases in many fluid systems
Gearbox Architecture The Effect of Gearbox Architecture on Wind Turbine Enclosure Size
Gearbox Optimisation pdf file
Generators wind turbine generators
How Wind Turbines Work The terms wind energy or wind power describe the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity. Take a look inside a wind turbine to see the various parts. View the wind turbine animation to see how a wind turbine works
How does a Wind Turbine Work? The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity, How does a Wind Turbine Work? Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity, animation
How to calculate wind power P = 0.5 x rho x A x Cp x V3 x Ng x Nb, Cp = Coefficient of performance (.59 {Betz limit} is the maximum thoretically possible, efficiency), Ng = generator efficiency, rho = air density 1.225 kg/m3, Nb = gearbox/bearings efficiency ~1
Investigations on current mills and wind turbines Theory of energy conversion Betz' theoryairfoil theory –lift and dragvertical axis free stream turbinesvertical vs. horizontal axisdrag vs. lift based designsanalytical modell for lift based design –problemspitch-variable design –use of dragcomputational, pdf file
Power available in the wind
EK=m.v2/2  ; Pw=r.A.v3/2  ==> r=airdensity=1.25kg/m3; v=windspeed; A = rotor swept area; 4 Beaufort (light breeze)=21-30km/h ; Ptot=hW.hG.r.A.v3/2  ==> hG=generator efficiency; hW=windmill efficiency; Pm mechanical power (Watts) = 0.593 Pw available wind power (the Betz coefficient: max efficiency for propeller type windmills)
Weather Conversion Calculators Distance Conversion Calculator, Speed Conversion Calculator, Pressure Conversion Calculator, Weight Conversion Calculator, Volume Conversion Calculator, Wind Chill Calculator, Surface - Cross / Head / Tail Wind Calculator, Flight Level - Cross / Head / Tail Wind Calculator, Temperature Calculator, Relative Humidity Calculator, Heat Stress Index Calculator, Fighter Index of Thermal Stress, Height and Temperature D-Val Calculator, Pressure Altitude Calculator, Density / Pressure Altitude Calculator
Why most of today's wind turbines are made using 3 blades
Wind energy calculations wind energy calculation, pdf file
Wind energy calculations 2 wind energy calculations, pdf file
Wind Generation Technical Characteristics pdf file
Wind power calculations wind power calculation, P = r.A.v3 /2 (P = power, r = air density = 1.25 kg/m3, A = rotor area, v = wind speed)
Wind speed calculator from current wind speed to Knots (noeud), Beaufort scale, Kilometre per hour (km/h), Mile per hour (mph), Feet per second (ft/s)
Wind speed conversion Wind speed conversion
Wind speed conversion tool knots, miles/hour, metres/second, Beaufort wind scale
Wind turbine pdf file
Wind Turbine Design
Wind turbine aerodynamics wind turbine aerodynamics, pdf file
Wind Turbine Blade Analysis Wind Turbine Blade Analysis using the Blade Element Momentum Method, pdf file
Wind turbine blade building
Wind turbine blade profiles pdf file
Wind Turbine Control Methods Pitch Adjustment, Yaw Adjustment
Wind turbine efficiencies and calculations pdf file
Wind Turbine Gearbox
Wind turbine generator pdf file
Wind Turbine Generator Technology Asynchronous - Induction Generator, Asynchronous - Double Fed Induction Generator (DFIG), Synchronous - Unsynchronised, Synchronous - Synchronised, Doubly-Fed Induction generator
Wind turbine power pdf file
Wind Turbine Rotor Design pdf file
Wind turbines wind turbines explained, Electrical Guide to Utility Scale Wind Turbines, Wind Turbine and Wind Plant Technology, Wind Turbine Power Regulation, Wind Turbine Electrical Generator Configurations, Direct connected asynchronous generator, Wound-Rotor Induction Generator with Scalar Control of Rotor Current, Doubly-Fed Induction Generator with Vector Control of Rotor Currents, Electrical Generator with Full Power Conversion, pdf file
Windturbines Modellering windturbines, pdf file, in Dutch
Wind turbines with asynchronous electrical generators pdf file
Wind Turbine Study Wind turbines that operate at a constant speed attain the greatest aerodynamic efficiency levels only when the wind speed is the same as the design wind speed. In variable speed wind power systems, the turbine runs at a tip speed ratio which ensures its maximum efficiency. Variable speed systems have more advantages such as that the turbine is less sensitive to the wind pattern of a given location and emits less noise at low speeds, pdf file

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Last updated on: 2011-01-02 | Copyright © 2011-2013 Educypedia.