What wind speeds are required for domestic and large scale wind turbines to work?
April 30th, 2010 | 
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34 miles per hour is the peak efficiency. This would be the ideal average wind speed. If this seems high for an average, remember that what they talk about on weather forecasts is at ground level; wind speed increases quickly when you get away from the friction of the earth’s surface. High speed doesn’t help. A lot of turbines will shut down at high speed to protect the equipment from damage. Average speed is most important so that electricity is generated continuously.
Posted in DOMESTIC WIND TURBINES
about a 100 miles an hour forever.
check if I am wrong..ok……….
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no comment
Don’t get hung up in wind speed. The reduction gearing is the thing. A four to one ratio is a good set up. every time the prop goes around once the generator shaft goes four times reducing the need for higher wind speeds. A variable pitch prop negates over spin in high winds. Go to windpower.com and check it out.
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A professionally designed system should take care of normalizing the mechanical shaft’s rpm so that any wind speed that can rotate the shaft would be productive. A 100 mph of something like a Cat 3 hurricane will surely give lot of fun and electricity
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34 miles per hour is the peak efficiency. This would be the ideal average wind speed. If this seems high for an average, remember that what they talk about on weather forecasts is at ground level; wind speed increases quickly when you get away from the friction of the earth’s surface. High speed doesn’t help. A lot of turbines will shut down at high speed to protect the equipment from damage. Average speed is most important so that electricity is generated continuously.
References :
A device called a controller determines the speeds of a wind turbine
Controller: The controller starts up the machine at wind speeds of about 8 to 16 miles per hour (mph) and shuts off the machine at about 65 mph. Turbines cannot operate at wind speeds above about 65 mph because their generators could overheat.
these figures varies slightly with different turbines
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http://www.solarnavigator.net/wind_turbines.htm
Really useful on freezing cold, still days aren’t they?
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