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Wind Power

Wind power is derived from the conversion of wind energy to become a useful form of energy to propel ships, make electricity or pump water. Wind is a renewable source of energy that is widely available and produces no harmful emission during operation.

2,489 Questions

Why is 690 volts used as a wind generator?

400 volts 3 phase is the standard voltage in Europe, and wind generators originated in Europe. 3 phase induction motors are readily available and become induction generators when driven faster than there syncronous speed mechanicaly by an external force, like the wind in the case of wind generators. Motors are typically delta connected and have 400 volt windings. In the case of generators there is an efficiency gain by configuring the 400 volt windings in a star configuration because the higher voltage will yield a lower current allowing a smaller diameter conductor. Square root of three times 400 volts equals 690 volts. Viola!

How many Megawatts does one turbine produce?

The power output of a wind turbine can vary depending on its size and wind conditions, but on average, a single turbine can produce between 2 to 3 megawatts of electricity.

Is the movement of air from a fan kinetic energy?

If the air is moving, then it has kinetic energy. If the fan is running, then the blade

has kinetic energy. Maybe that's where the moving air got its kinetic energy from.

If the dog is also walking through the room, then the dog has kinetic energy too,

but he probably didn't get his kinetic energy from the fan or the air. On the other

hand, a piece of tissue floating through the room could very well have gotten its

kinetic energy from the fan, but that kinetic energy had to be carried from the fan

to the tissue by the moving air.

What type of energy does a wind turbine converts into electrical energy?

A wind turbine converts kinetic energy from the wind into electrical energy through the rotation of its blades. This mechanical energy is then converted into electrical energy by a generator inside the turbine.

Why do wind and rain cause power outages?

Wind can cause power outages by knocking down trees or branches onto power lines, causing them to break. Rain can also cause power outages by creating flooding that can damage power infrastructure or by getting into electrical equipment and causing short circuits. Both wind and rain can lead to downed power lines and equipment failures, disrupting the flow of electricity.

How does a generator produce an electric current?

Electromagetism is a unified force. A magnetic field that is moving relative to a wire will cause electrons within the wire to move. Less common is a moving wire in a stationary magnetic field, but the relative movement between the wire and magnetic field induces the same movement of the electrons within the wire. This action of moving the electrons in a wire (or Armature) produces the electric current that may then be used to power a circuit.

Why does wind energy effect the environment?

There is always an initial environmental impact. There is the cost of materials to make the windmills and the cost of the production and ongoing maintenance. It is also claimed there is an impact on birds that sometimes die after flying into the blades and a small impact on the land below, though farmers can still graze stock under the windmills. Balancing that is the production of free electricity from the wind.

A wind which comes from inland?

California: Santa Ana

Colorado: Chinook?

An Offshore wind (as opposed to and 'onshore' wind)

What is one limitation of wind power?

One limitation of wind power is its variability. Wind is not always consistent, so there are times when it may not produce enough electricity to meet demand. This variability can make it challenging to rely solely on wind power for electricity needs.

Does sound energy generate electricity in a power station?

Yes, sound energy can be converted into electricity in a power station using piezoelectric materials. These materials can generate an electric charge in response to mechanical stress, such as sound waves. However, the efficiency of this process is currently low compared to other methods of generating electricity.

How is wind energy converted to electric energy?

First, wind blows onto a turbine. The turbine is shaped in a way that when air blows on it, it rotates. The number of spins usually needs to be amplified before it can power anything by a gear system that which a larger gear whice the turbine is attached to connects to the smaller gear by the teeth. This can be repeated many times. The smallest gear then connects to a dynamo. Here is how a dynamo works:

Movement of another body is transmitted to a rectangular coil of wire that is inside a U-Shaped magnet. The motion of this coil of wire cuts the magnetic flux in the magnet. Faraday once stated that-whenever there is a change in magnetic flux linked with a circuit there is an induced current and the strength of this induced current is directly proportional to the rate of magnetic flux-. So according to this rule when the magnet is in motion it is constantly cutting the magnetic flux, and as it does this there is a current that is induced (eddy currents). However a dynamo can either be A.C or D.C according to the brushes and number of commutators used (Flemings Right-hand rule). If we refer back to Faraday's rule it says that the strength of this induced current is directly proportional to the rate of magnetic flux.

Hoped I helped.

How much does a windmill propeller weight?

The weight of a windmill propeller can vary depending on its size and material. On average, a small residential wind turbine propeller can weigh between 30-50 pounds, while larger commercial wind turbine propellers can weigh several tons.

How much wind you need to knock out power?

Basically, any amount (other than zero) depending on the amount of power you wish to generate. Windo power is usually used to drive a wind turbine but these can vary greatly in size and output.

How can you stop the wind blowing?

You cannot stop the wind from blowing as it is a natural phenomenon caused by various atmospheric factors. However, you can use barriers such as windbreaks or plant trees to reduce the impact of wind in specific areas.

How is electricity generated using wind shown as a diagram?

The main concept in power generation is the same for wind farms, hydroelectric plants, and steam plants (e.g. coal, natural gas, and nuclear). All of these plants have generators that have a magnetic core surrounded by windings of wires. When the magnet spins, it's electromagnetic field induces current (the flow if electrons) in the wires. In a wind generator, the blades of the fan are blown by the wind, and that's what causes the magnet to spin in the generator.

Fyi: when you have a magnetic core surrounded by windings of wires; instead of physically spinning the magnet to produce electricity, you can send current through the wires to spin the magnet (i.e. you would have a motor instead of a generator).

How many blades do you need for a windmill?

Typically, windmills have 2 or 3 blades for optimal efficiency. The number of blades can vary depending on the size and purpose of the windmill. A larger wind turbine may have more blades to capture more wind energy, while smaller windmills may have fewer blades for simplicity and cost-effectiveness.

Why do some people do not like wind farms?

Some people may not like wind farms due to concerns about their visual impact on the landscape, noise pollution from the turbines, or effects on wildlife and habitats. Additionally, there can be disagreement over the use of government subsidies to support wind energy projects.

In what ways is wind power useful?

Wind power is useful as a renewable energy source that can help reduce greenhouse gas emissions and combat climate change. It is also cost-effective over the long term and can provide energy security by diversifying the energy mix and reducing reliance on fossil fuels. Additionally, wind power creates jobs and promotes economic development in regions where wind farms are located.

What things are in the back of a wind turbine?

There are a few things on the backs of Wind Turbines:

1) Anemometers - wind speed sensors that help the turbine fine tune its blade pitch to be most efficient.

2) Wind Vanes - wind direction sensors that keep the turbine lined up with the wind, or turn it away from the wind when the gusts are too strong and can damage the turbine.

3) Visibility Lighting - red and white lights to meet requirements of aviation authorities for visibility.

How wind is captured in a wind turbines?

The wind is captured by the blades of the wind turbine, which are aerofoil shaped. The force drives the blades which are precisely angled by a computer system to make the most efficient use of the available wind. The rotating motion of the blades attached to the hub, drives a gearbox which increases the rotating speed from the hub. The output of the gearbox spins a 3 phase generator at high speed that is computer matched to the existing grid frequency, supplying it with power.

Why you should not use wind energy?

There is No good reason, why you wouldn't use wind energy. Look at the oil spill in the Gulf of Mexico, look at the mine disaster in West Virginia. Look at the wastes from nuclear power. Wind power is the best energy source known to people.

What is one major drawback of wind turbines?

Although wind energy is the perfect alternative fuel source, it can be very expensive. The cost to build a wind turbine can be around $150,000 to $200,000 - about the cost of the average house. This high start-up price can bankrupt the average civilian, which is why only the wealthy can afford it, but only by investing and carefully budgeting their money wisely. Despite the initial start-up price, the amount of electricity it produces is phenomenal - 5000 kilowatts per hour. Although this statistic only applies to windy areas that have a minimum wind speed of about 25 miles per hour, the money saved from spending less on electricity bills saves people money in the long run.

Wind turbines can also kill or injure birds and bats.

What role does the sun play in the production of wind?

The sun heats up the Earth's surface unevenly, causing the air to warm up and rise in some areas and cool and sink in others. This temperature difference creates areas of high and low pressure, resulting in the movement of air and the formation of wind.

How much wind is needed to generate electricity?

Generally, wind speeds of at least 7-9 miles per hour are needed to generate electricity efficiently using wind turbines. However, higher wind speeds of around 25-30 miles per hour are typically ideal for maximizing electricity production. Wind turbines are designed to start generating electricity at what is known as the "cut-in" speed, and they reach peak efficiency at the "rated" speed.

Which countries produce the most fuel?

i think it is either Iran (former Persia) or Saudi Arabia. however, russia produces alot of fossil fuel as well, but it is much heavier, therefore does not get bought as much by other countries such as the us and UK.