Wind power is generated by harnessing the wind energy to generate the power and is the world's fastest growing energy source. Wind power is becoming more important to meet the increasing power demand as wind energy is a renewable and free resource.
How is power is generated from wind?
The energy of the wind will be harnessed with wind turbines. When the wind flows that passes the turbine's rotor blades, the blades rotate and convert the wind energy into kinetic energy. This Kinetic energy of blades makes the rotor to spin inside a generator according to Faraday's law of electromagnetic induction the kinetic energy is converted into electrical energy. Once the wind energy is converted into electrical energy, the electrical energy flows through power cables in the turbine down's to the turbine tower to connect with the output of the other wind turbines in the wind farm before entering into power transmission. The wind generated power is directly proportional to the wind speed. The greater is the wind speed, the more electrical energy it wil generated. In Wind farms we will see more than one wind turbine working to generate electricity - this is called a wind farm. All the wind turbines will work independently and generate individual power that will be collected from all the wind turbines before feeding for transmission networks.
Description about Wind Turbine or mill
Inside a wind turbine:
Each wind turbine or wind mill has four key parts:
Foundation: Wind turbine is a massive structure that must have a strong foundation to withstand the force from strong winds and it has to support the overall height and the length of the rotor blades.
Tower: Power generation equipments is kept in the tower. The tower consists of the blades and power generation equipments high above the ground level into the smoother where stronger wind currents are blowing. Access to the nacelle and rotor can be done through the tower.
Nacelle: The nacelle can be simply said as heart of the turbine, where the generator, gearbox and turbine drive train parts are held. The generator set inside the nacelle is used to convert the wind energy into kinetic energy and then it will transform into electrical energy.
Rotor: Almost wind turbines have three blades that are attached to the rotor. Blades in wind turbines tested thoroughly to ensure that they can withstand most severe weather conditions.
Whether wind turbines are safe to use?
Each wind mill or turbine has an internal computer system that will monitors the direction and the speed of the wind, and that internal system allows it to automatically set itself to operate at a safe level. If there is any errors or damages to the turbine due to working at over capacity(due to high wind speed and strength), the automated system in the turbines will shut down automatically.
Advantages and disadvantages of Wind generated power
Advantages of wind energy:
The greatest advantage of using wind energy is that it generates electricity without emitting any dangerous greenhouse gases .Generates power without the Combustion of fossil fuels .
Wind energy has little effect on the environment, this is because:
Wind energy is a renewable resource, so it can never run out
Wind farms lessen the need for us to use fossil fuels to generate electricity.
Disadvantages of wind energy:
Though the wind energy is a greatly environmental friendly option to generate power,The installation cost is high due to installing a lot of turbines in one place in order to generate more power to meet the power demand.
This giant rotor structure produces more noise while rotating and hence it is noisy .
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