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Residential Wind Generators are
generally small to medium size specially designed electrical
power generators. These generators convert the energy of wind
into electrical power using a low-speed generator. There are
several different varieties and designs commercially available -
as well as numerous do-it-yourself kits available for varying
skill levels. For most people, it is best to hire a professional
installer to size and install both the generator, and electrical
interconnects.
Wind generators are a powerful and economic alternative to solar
power. They fit in small areas, and produce clean,
environmentally safe electricity. A wind generator will last for
many years properly installed. The most common design is a large
wind vane which mounted to the front of the generator, then
hoisted onto a pole. The generator produces DC power, with
common voltages of 12 & 24 Volts. |
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Nearly all wind generators these days include a controller,
which is a purpose built electronic component designed to
regulate the voltage and speed of the generator. The power from
the controller is then fed directly into an inverter (a device
to convert DC to AC, suitable for home use), or for some
installations the power is stored in a bank of batteries for
usage later. The later is typical for a grid-connected home
owner who typically is using wind power to reduce his grid-power
usage, while battery storage is typical for off-grid & remote
power storage.
There are several common problems with wind generators. First,
location is extremely important. Wind generators must be mounted
high on poles, and located above trees and other tall objects to
produce good, constant power. Additionally, not ever place is
suitable for wind power - as most generators only begin to
produce electricity at 9 mph. There are wind maps produced for
many countries and states which can give you an idea of
suitability and cost effectiveness. You may also purchase an
anemometer, which can measure the wind speed for proposed
localities.
In general, locations on coastal and flat planes are desired
places, but wind power can work for many other places as well.
Another common issue with wind generators is durability and
survivability. Modern generators utilize advanced materials and
specialized design to produce power not only in low wind speeds
- but also during wind storms and adverse weather. Generators
are now designed to operate within a safe band of speeds, and to
disengage or moderate during gusts and high-speed winds.
There are two common designs, furling and tilting. A furling
generator has wind vanes which "twist" or furl during high
speeds. This reduces their profile into the wind, slowing the
turn of the blades. A tilting generator has a gearing or torque
mechanism which turns the vanes away from the direction of the
wind.
Lastly, there are several issues with zoning and high
restrictions, as well as noise issues with some models of wind
generators. Some places restrict the height and placement of
wind generators, especially in residential areas and commercial
zones. Also, you will need a long area to assemble and raise the
poles upon which the generator is attached. Not all generators
are suitable for all areas due to noise. Flapping and whirling
sounds may annoy neighbors (and even yourself). So, it is best
to get a quieter system if this may be a concern. For most, it
is highly advisable to hire a professional contractor to size
and install your system. Additionally, you will need to hire an
electrician to install your system and verify that it meets
local and national electrical code standards. Also, for
grid-connected installations you will need a specially-designed
power-meter provided by the electric utility if you plan to
"sell back" power to the utility.
For more information about Residential Wind Generators:
How I home-built an electricity producing Wind turbine
Small Wind Turbines
Wind Power Generator
New Options for Home Wind Power
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