Wind Energy and Turbines

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Wind is a form of solar energy so when it is used it creates electricity. Electricity is a physical phenomenon associated with fixed or moving electrons and protons. The wind power development was a step forward for the use of electricity on how to generate more electricity using the wind. The accomplishments for electricity is that Senegal used 10MW for a wind farm and they gave a positive report and is now using it since the second half of 2005. (Dodge) Another thing is during the Second World War; small wind generators were used on German U-boats to recharge submarine batteries as a fuel-conserving measure. The good thing about wind power is can produce electricity at night as well as during the day and that it is plentiful, renewable, and it reduces the greenhouse gas emissions. (ERIC) The Wind Power would be cheaper to develop electricity and it is less harm to our daily lives.

2. Wind power is generating electricity by collecting wind, and it saves energy in the world.

Wind energy is a clean, alternative source of energy that does not produce greenhouse gas emissions and can be produced domestically. While wind energy accounts for a small overall portion of the energy produced in the United States, the potential for wind energy is significant. Nevertheless, there are some obstacles that delay the widespread use of this technology, including intermittency of wind, cost, and public policies that deter their implementation.

As the global supply of fossil fuels becomes steadily lower, need is growing for new energy sources that are beneficial to the environment and cost-effective. Wind power is one solution to this need. Wind turbines require significant investment, but are cost-efficient in the long term. If construction of turbines is sufficiently increased, the wind may be able to in the future provide a very major portion of global energy.

Today, we have what is known as wind turbines. These large structures are used as a renewable and free energy source. The way a wind turbine works is very simple. As the wind blows, it moves the blades, which then turns a generator and makes electricity. These wind turbines are only a small source of energy because they work about 65 to 90 percent of the time. When many wind turbines are placed together in one area, it is known as a wind farm. The majority of wind farms are found in Texas and California. Wind farms are hoped to be spread all across the country to become a more prominent source of energy that is not only renewable, but also free.

Wind turbines have altered the way that we get our energy. Wind turbines are used to harness wind power and turn into electricity. They are comprised of usually 2 or 3 blades that are connected to a shaft that was attached to a generator which then turns into electricity. Although we now generally use it to produce electricity, wind energy was originally used in the form of windmills to do chores and housework. Because of the rapid increase in the use of wind turbines, it has added jobs and changed the way we get energy.

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“A wind turbine is a machine for converting the kinetic energy in wind into mechanical energy”. (1) The inventor of the first electric wind turbine was Clevelander Charles Brush, who ran his entire Euclid Avenue mansion off of one for 20 years, which later made the cover of Scientific American in 1888. (2) Although the use of alternate energy didn't rise a great deal afterward, this event did open the eyes for many environmentalists. Wind power is only one of our several “energy source[s] whose ‘fuel’ is free and will never be exhausted” (3) with the pros and cons not completely weighed out as to whether it will be truly beneficial or not. The two main issues regarding wind turbines are the environmental effects that they have and the

Why Wind Energy Is Important? To begin with,

We are facing an energy crisis on Earth. Burning fossil fuels are harming the atmosphere; this global warming and affects produces chemicals that hurt our body. People are starting to think about using alternative energy. Wind power would be our first choice, because it’s clean, inexhaustible and renewable. Today, wind power is mainly used in Europe. We believed wind power would be the main source of alternative energy for world use.

Wind power has been used over centuries (Bowden 44). It converts the energy form the wind into wind power with the help of wind turbines (How Do Wind Turbines Work?). They can provide power for houses and farms. In order to fulfill the electricity needs of humans, large group of wind turbines can work together as wind farms (Catherall 32).

The main components of a windmill consist of blades, rotor and generator etc. The blades are the most important feature of the wind turbine. It looks like sails, normally have two or three blades, they are aerodynamically shapes to make the most of the energy in the wind, turning a shaft which is connected to a generator and turn into wind power. When the wind forces the blades to move, it has transferred some of its energy to the rotor which is the technical term for the entire hub. It is also known as a propeller. The rotor usually consists of two or more wooden, fiberglass or metal which rotates about an axis at a rate determined by the wind speed and the shape of the blades. In addition, rotor can turn a generator which transforms the mechanical energy into electricity. There is an electric motor orientates the nacelle so that, rotor is positioned facing into the wind. In terms of generator, that is converts the motion of wind turbine in to electricity. A simple generator consists of magnets and a conductor. The conductor is typically a coiled wire, they are rotated in a magnetic field to produce electrical voltage. The shaft connects to permanent magnets which surround by coils of wire. In the electrical process, when the conductor that has magnets rotating to the other, there is an electric

A wind turbine turns wind into energy. As wind blows towards the blades of the turbine, the rotors spin around, capturing kinetic energy from the wind. The rotor blades are able to rotate around the hub (located at the front, middle of the turbine) allowing them to meet the wind at the best possible angle. Inside the nacelle (the main body of the turbine), the gearbox is able to convert the low-speed turning of the drive shaft into high-speed rotations that are fast enough to drive the generator proficiently. The generator then takes the kinetic energy from the spinning shaft and turns it into the electrical energy. With the help of anemometers that provide the measurements of wind direction and speed, the rotors and nacelle can be rotated by a yaw motor allowing the blades to face directly towards the oncoming wind, capturing the maximum amount of energy possible. The electrical current produced by the generator then flows through a cable running through the centre of the turbine tower. From there, a step-up transformer converts the electrical energy to a voltage about 50 times higher. The energy can then be transmitted efficiently to buildings and homes nearby or to the power grid.

Wind energy is essentially the conversion of the kinetic energy from air molecules in motion to mechanical energy which is generally then converted into electrical energy. People have used wind power since 700 AD in