Therefore, it is always beneficial when a wind turbine is designed to have a start-off wind speed that is as low as possible. Even so, it is still producing electricity. This speed varies from turbine to turbine depending on blade size, shape, angle, mechanical transmission, generator, and quality maintenance.Īs the level of wind speed strongly decides the amount of electrical power generated, the power output of a wind turbine at low wind speeds would only reach a fraction of its power capacity, or even be somewhat insignificant. It tells you, from which wind speed onward, the wind surmounts the mechanical resistance of the turbine and starts generating bits of electricity. The “start-off wind speed,” or “cut-in wind speed.” of a wind turbine defines the basic wind speed for the turbine to start turning. Wind turbines can only start turning when the wind is strong enough. There is wind but the wind speed is too low. Needless to say, if the wind turbine stands still too often, it might be an indication that the chosen spot for the turbine is less than ideal.Ģ. This difference between optimal and realistic performance due to external influences is reflected in the wind turbine’s “ capacity factor.”
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A wind turbine designed to generate a certain amount of power output in optimal conditions might not have the environmental support to operate with its full capacity at all times. In other cases, there could be nearby buildings or obstacles that are blocking most of the incoming wind.Įnvironmental factors like these significantly decide how much wind resource a wind turbine is able to receive and therefore how frequently the wind turbine turns.
Maybe the region is experiencing seasonal breaks of wind activity. Maybe the weather is uncharacteristically calm for the day.
Generally speaking, there are 4 reasons behind the downtime of wind turbines.Īs simple as that: There is no wind to turn the turbine in the first place. In fact, downtime of wind turbines is quite normal or even necessary sometimes.Ĥ reasons why some wind turbines don’t turn It is useless if you only take power output into consideration. Since wind turbines generate electrical power by converting energy resulting from movement, the question arises: Isn’t it useless when a turbine doesn’t turn? In reality, though, that isn’t always the case. When it comes to wind turbines, people expect them to always be turning.
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