Wind energy is described as a process, which is used to emit mechanical or electrical energy. Wind turbines will convert from the wind’s dynamics into mechanical energy. This mechanical energy can be used for specific tasks such as water pumping, or food mills, or for a generator that converts from mechanical energy into electrical energy.
Wind turbine construction
– Anemometer: Wind speed meter and wind speed data transmission to the controller.
– Blades: The wind blows through the blades and causes the blades to rotate and rotate.
– Brakes: Used to stop the rotor in an emergency by electricity, water or by the engine.
– Controller: The controller will start the engine at a wind speed of about 8 to 14 mph, corresponding to 12 km / h to 22 km / h and approximately 65 mph engine. at 104 km / h because these generators can heat up.
– Gear box: The gearbox is connected to a low-speed shaft with a high-speed shaft and increases the rotational speed from 30 to 60 rpm to 1200 to 1500 rpm, the rotation speed is required. Most of the generators produce electricity. This gear is expensive, it is part of the engine and wind turbine.
– Generator: Generates electricity.
– High-speed shaft transmission shaft
– Low-speed shaft (Low-speed shaft)
– Cover (Nacelle): Includes rotor and sheath, all mounted on the top of the cylinder and consists of gearboxes, high and low speed transmission shafts, generators, controllers and brakes. The cover protects the components inside the case. Some shells must be large enough for a technician to stay inside while working.
Pitch: The wing is rotated or tilted slightly to keep the rotor rotating in the wind. It is not too high or too low to generate electricity.
– Rotor: Includes rotor and shaft.
– Nacelle (Tower): Made of steel or steel ball. Because the wind speed increases, the higher the cylinder, the higher the cylinder to get more wind energy and generate more electricity.
– Wind vane: To handle wind direction and contact “yaw drive” to direct the wind turbine.
– Yaw drive: Used to keep the rotor always toward the main wind direction when there is a change in wind direction.
– Yaw motor: The engine gives the “yaw drive” the wind direction.
Current wind turbine types
Wind turbines are now divided into two types:
– A vertical type like a helicopter.
– A type of horizontal axis.
Horizontal wind turbines are popular with 2 or 3 blades. Three-bladed wind turbine operates in the wind with the propeller face facing the wind. Today, three-bladed wind turbines are used extensively.
The power of the wind turbines again
Wind turbine capacity ranges from 50kW to more than a few MW. For larger wind turbine power ranges, gather together into a group but the turbines together in a wind farm and it will provide more power to the grid.
Small wind turbines with a capacity of less than 50 kW are used for home use. Telecommunications or water pumps are sometimes also used to connect diesel generators, batteries and photovoltaic systems. These systems are called hybrid systems and are typically used in remote areas where power grids are not available, where power networks can not connect to these areas.
Principles of operation of wind turbines
How do wind turbines generate electricity? Simply a wind turbine works in contrast to an electric fan, instead of using electricity to create winds like electric fans, wind turbines use the wind to generate electricity.
Wind turbines operate on a very simple principle. The wind energy causes two or three rotors to rotate around a rotor. The rotor is connected to the spindle and the spindle will rotate the generator to generate electricity.
Wind turbines are mounted on tall towers to collect most of the wind energy. At 30m above ground, the wind turbines are convenient: Speed is faster and less abnormal.
Wind turbines can be used for home or building power supplies, which can be connected to an electrical network to distribute the network more widely.
From outside to a wind farm, how do a group of turbines work and generate electricity through utility lines? Electricity is transmitted through distribution wires from homes, businesses, schools …