Wind turbine blades rotate when hit by the wind. A generator built into the nacelle then converts the kinetic energy of the turning shaft into electrical energy. This then passes through a transformer, which steps up the voltage so it can be transported on the National Grid or used by a local site.
F rom micro-turbines for an individual house right up to enormous, off-shore windfarms, all wind turbines use the same mechanics to generate electricity. Most onshore wind turbines have a capacity of megawatts MW , which can produce over 6 million kilowatt hours kwh of electricity every year.
Up to a certain level, the faster the wind blows, the more electricity is generated. In fact, when the wind speed doubles, up to eight times more electricity is generated. But if the wind is too strong, turbines will shut themselves down to prevent being damaged. All this means that the ability of a wind turbine to generate the maximum amount of power it can depends on the wind. The amount of land required for a wind farm varies considerably, and is particularly dependent on two key factors: the desired size of the wind farm which can be defined either by installed capacity or the number of turbines and the characteristics of the local terrain [14].
Typically, wind turbine spacing is determined by the rotor diameter and local wind conditions. Some estimates suggest spacing turbines between 5 and 10 rotor diameters apart. If prevailing winds are generally from the same direction, turbines may be installed 3 or 4 rotor diameters apart in the direction perpendicular to the prevailing winds ; under multi-directional wind conditions, spacing of between 5 and 7 rotor diameters is recommended [14].
Toggle navigation. Search open E I. Categories : Sectors Wind. Contact needs updating. Read more. How Do Wind Turbines Work? See Resources. Ball Corporation is meeting half of its current U. What Is Wind Energy? Graph of cumulative U. The Advantages of Wind Energy: Wind turbines typically repay the lifetime carbon emissions associated with their deployment in less than a year, before providing up to 30 years of virtually carbon-free electricity generation.
Wind energy helps reduce carbon dioxide emissions — in , it avoided million metric tons of C02 emissions. Wind energy provides tax revenue to communities that host projects. The wind industry supports job creation, especially during construction.
The industry supported , jobs across the U. A diagram showing components of a standard wind turbine Power is generated through rotating wind turbines that harness the kinetic energy of moving air, which is converted into electricity. Most wind turbines have four basic parts: Blades are attached to a hub, which spins as the blades turn. The blades and hub together make the rotor. The nacelle houses the gearbox, generator and electrical components. A foundation holds the turbine in place on the ground.
Types of Wind Turbines: Big and small turbines fall into two basic categories, based on the orientation of the rotor: horizontal-axis and vertical-axis turbines. Who Does Wind Turbine Maintenance? Rene Lopez, wind technician at Duke Energy Renewables Wind technicians are responsible for troubleshooting and repairing the electronics and mechanics that keep the blades spinning. There are six basic considerations for wind energy projects: Wind availability and desired locations Environmental impact Community input and local need for renewable energy generation Favorable policies at the state and federal levels Land availability Ability to connect to the power grid Just like commercial solar PV projects, permits must also be secured before a wind power installation is started.
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