Domestic Wind Turbines Blog » WIND POWERED GENERATORS

Wind power electricity generators?

admin — Mon, 07 Feb 2011 04:44:36 +0000

How do wind power generators work ? as they still turn when there is no wind are they self powered with help from wind ?
Has anyone got a diagram of the generator ?

How can they turn with no wind? Self powered would mean they use electricity, which would be silly, since their purpose is to generate power, not use it.

The wind makes the blades turn because it hits the angled blades and pushes them to the side.

The rotating shaft is connected via gears to a dynamo or alternator that changes that motion to electric power.

For a diagram of the generator, you will have to look on line.

how to make a wind powered generator?

admin — Wed, 10 Nov 2010 19:00:54 +0000

i wanted to make a wind powered generator for science fair. i was wondering about the part that generates the electricity if it was called a DC motor?

It is called a generator but is more or less the same thing. On a motor, electricity flows through a wire coil that is surrounded by magnets. The current causes a central shaft to turn. On a generator an power source turn the shaft to cause a current in the coils.

It should be relative easy to make a crude generator as long as you have resources.

http://www.metacafe.com/watch/912594/simple_electric_generator/

I will let you figure out the wind part of the project. Good Luck.

What would create more power from wind or water energy? Multiple small generators or one large one?

admin — Thu, 02 Sep 2010 02:00:57 +0000

What would create more power from wind or water energy? Multiple small generators or one large one?
Also, what determines the output of an electrical generator? Would size or speed of revolutions change the output?

I think the easiest way to explain this is to start at the beginning. Think of the flowing water (or air) as a momentum-carrying body that has kinetic energy that can be captured by your generators. The larger the area covered by your rotor (the blades of your wind or hydro generator), the more energy that can theoretically be produced. The swept area of the rotor is a circle – as you know from math, the area of a circle is pi multiplied by the radius squared. Therefore, the energy you can extract from generator increases proportionally to the square of the blade length (the radius). Therefore, it is generally much more efficient to have one large generator than it is to have multiple small ones. This is playing out in the wind industry today – 20 years ago the most cost-effective wind turbines were around 10-50 kW each, 10 years ago they were around 100-500 kW each, and today they are 1000-3000 kW each!

The output of a generator is dependent on the amount of torque that is applied to it and the speed at which it rotates. The generator needs to be sized appropriately according to the size of the rotor – you could but a 3000 kW generator onto a 50 m rotor diameter but it wouldn’t be very efficient. a 500 kW generator would be better sized to a 50 m rotor, just as a 3000 kW generator is appropriate for a much larger 100 m rotor diameter.

We would like to build our own wind powered generator. Does anyone know where we can find a technical drawing

admin — Mon, 30 Aug 2010 05:49:35 +0000

How big of a generator, Email me or IM me with details, I work for Regal-Beloit, manufacturer of Motors and Generators including Leeson, Marathon Electric, and Lincoln products.

I would like the Connecticut regulations on wind power & wind generators.?

admin — Fri, 27 Aug 2010 14:00:33 +0000

I want to build a windmil to gererate power to reduce my electric bill

I think the below link will really help you, good luck!!!

What can I do with 2kw wind power generator?

admin — Mon, 23 Aug 2010 14:15:42 +0000

How many of these wind power generators to power a house?
Generates 2kw per

Typical house has a load demand of at least 12 kW.

So you would need at least 6 wind-powered generators
to meet this average power demand.

why are wind power generators white?

admin — Fri, 20 Aug 2010 09:18:53 +0000

White is chosen for surfaces for these reasons:
heat dissipation characteristics(less heat is absorbed in more time)
less prominent(fits in the line of sight)
easy to detect flaws and rust (easy inspection)

How many wind generators would have to be install?

admin — Tue, 17 Aug 2010 12:11:48 +0000

How many wind generators would it take to replace 50% of the power plants powered by coal and natural gas?

According to the Edison Electric Institute (eei.com), in 2005 there was 1,067,019 MW of capacity available. Of the energy generated, 49.7% came from coal and 18.7% came from natural gas.

Doing the math, that means to replace half of the power plants powered by coal and natural gas, we have to replace 364,920 MW of capacity.

Assuming that the average wind generator has a capacity of 250 kW, we need 4 of them for every MW of capacity. Once again, doing the math, we would need 1,459,680 250-kW windmills to replace 50% of the power plants currently powered by coal or natural gas.

If you can build the plants for $800 / kW (that might be too cheap), each turbine would cost $200,000. Since you need 1,500,000 of them (rounding to make the math easier, I only have an 8 digit calculator), you would have to find investment of $300 billion.

Assuming you found the space and the investors, you will NEVER get this past the environmentalists (ironic, isn’t it?). They will complain that the "whoosh whoosh whoosh" sound is noise pollution and that too many birds are flying into the turbine blades.

How do I make a homebuilt wind generator power ?

admin — Sat, 14 Aug 2010 15:48:36 +0000

Does anybody know?

I really want to make a homebuilt wind generator power but have no idea how. Im a complete noob when it comes to this stuff lol

homebuilt wind power generators can be built with just a few parts that you probably already have laying around your home.

If you want to power household items like TVs, washing machine etc then you will need an inverter. These are quite cheap though.

I got my instructions on homebuilt wind power generators from http://www.earth4energy.com and it made life HEAPS easier for me.

A homeowners association won’t allow certain visible changes to the houses. Including wind powered generators?

admin — Wed, 11 Aug 2010 18:44:30 +0000

And solar roof panels, and reflective roof or window insulation. They say changes like the above (along with rusted wrecks of autos in the yard, of course) will lower property values. So who’s right, the association or green living advocates? Let’s say moving to a dif neighborhood is not an option. Thanks.

The association is correct, both legally and logically.

I live in a wind mill happy state and there is no possible way a city would give you permission to build a wind mill in your bank yard.

You should be able to put in low-e windows, which do the same thing as the reflective ones without looking awful.