風力發電原理


How does a wind turbine work?
You’ve probably seen a wind farm but do you know how wind force is converted into electrical energy. we are going to show you how a wind turbine works each wind turbine has a wind vane at the top that indicates the wind direction this allows the turbine to rotate on the tower. And face the wind the blades also rotate on their axis for maximum resistance wind force that is the kinetic energy contained in moving air currents spins the blades these are designed to fully capture its energy. They can be as long as 60 meters. Each and a made of very light and resistant materials for ease of movement this is why they can produce energy. Even with very light winds starting from about 11 kilometers per hour with very strong winds above 90 kilometers per hour. The blades are placed in the feathered position and the turbine stops spinning for safety reasons the blades are attached to the wind turbine. Through the hub which is coupled to the low-speed shaft the low-speed shaft is given this name because it spins at the same speed of the blades between 7 and 12 revolutions per minute to produce electricity. it is necessary to increase the turning speed of the low-speed shaft that is the mission of the gearbox which raises the speed over a hundred times and transfers it to the high-speed shaft the high-speed shaft that rotates it up to 1500 revolutions per minute is connected to a generator the generator converts the kinetic energy into electricity a source of energy that is easier to transport. and use the electricity produced in the generator as direct current is conducted through the interior of the tower to the banks there a converter transforms it into alternating current which is the most commonly used kind and a transformer raises the voltage for transport inside the wind farm from each turbine alternating current is sent to the substation through underground cables here. the voltage is increased again to feed it into the power grid and transport it to end consumers this is how we use the wind to light cities peat industries schools or hospitals or operate our household appliances in a clean and sustainable way

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    風力發機原理

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