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If you have seen a dynamo in your bicycle then you have a fair idea how wind generates the power. The dynamo uses the wheels rotation to power the small generator which produces energy and thus powers your lights. In the same way as the wind moves across the blades it causes the blade to rotate. This in turn is coupled with the generator system which produces electricity like your dynamo. The electricity produced from the wind turbine is then fed into the grid just like the electricity produced from your dynamo is used to turn the lights of your bicycle.Of course the details and the internal construction of the wind turbine is very sophisticated unlike a common dynamo but i think the over all concepts should be relatable enough to make you understand it better.
Wind turbine design is the process of defining the form and specifications of a wind turbine to extract energy from the wind. A wind turbine installation consists of the necessary systems needed to capture the wind's energy, point the turbine into the wind, convert mechanical rotation into electrical power, and other systems to start, stop, and control the turbine
The speed at which a wind turbine rotates must be controlled for efficient power generation and to keep the turbine components within designed speed and torque limits. The centrifugal force on the spinning blades increases as the square of the rotation speed, which makes this structure sensitive to overspeed. Because the power of the wind increases as the cube of the wind speed, turbines have to be built to survive much higher wind loads (such as gusts of wind) than those from which they can practically generate power. Wind turbines have ways of reducing torque in high winds.
A wind turbine is designed to produce power over a range of wind speeds. All wind turbines are designed for a maximum wind speed, called the survival speed, above which they will be damaged. The survival speed of commercial wind turbines is in the range of m/s ( km/h, MPH) to m/s ( km/h, MPH). The most common survival speed is m/s ( km/h, MPH).
If the rated wind speed is exceeded the power has to be limited. There are various ways to achieve this.
A control system involves three basic elements: sensors to measure process variables, actuators to manipulate energy capture and component loading, and control algorithms to coordinate the actuators based on information gathered by the sensors.
the blades of wind turbine moves when wind is fast or start these blades are connect to electrical generator witch produce electrical power.
