Horizontal Shaft Wind Driven Generator Wind turbine speed is low, small wind turbine speed per minute up to hundreds of turn, large and medium-sized wind turbine speed of about ten minutes per minute or even a dozen turn, in the "cabin equipment and tower" section introduced with the gear box by Speed to drive the generator. But the gear box will reduce the efficiency of the wind turbine, the gear box is wearing parts, especially high-power high-speed gear box wear and tear, in the wind turbine overhead environment are more difficult to maintain.
Horizontal Shaft Wind Driven Generator A low-speed generator specially designed for wind turbine design can be driven directly by a wind wheel, which is a multi-pole generator and is energized with permanent magnets. Several direct-drive wind generators are introduced in the "Direct-drive wind turbines" section. This section describes the layout of its cabin equipment on a direct-drive wind turbine model.
Horizontal Shaft Wind Driven Generator Direct drive wind turbine without gear box, so the main equipment is the engine cabin, and direct drive generators due to a large number of poles, larger diameter. The model uses the standard inner rotor structure, which is the internal rotor direct drive wind turbine, is the radial air gap flux. In the stator core embedded with three-phase winding,Horizontal Shaft Wind Driven Generator the generator is fixed in the frame of the rack. Figure 1 shows the infrastructure in the cabin, the chassis used to install the generator through the yaw bearing installed in the tower, the base through the yaw motor to promote rotation. There are racks on the base for fixing the stator of the generator. There are shafts for the generator rotor and the rotor.
In the current wind turbines, direct-drive wind turbines are increasingly used in small and medium-sized wind turbines (including vertical axis wind turbines) have applications, the world's largest horizontal axis wind turbine is straight Driving.
Please watch the 3D animation of the direct drive permanent magnet wind turbine.
Direct drive type permanent magnet wind turbine 3D animation
Horizontal Shaft Wind Driven Generator For the efficiency of high-wind generators, direct-drive wind turbines are used in variable speed mode, through the pitch to adjust the speed to get the maximum wind energy utilization factor. But the ever-changing speed of the generator makes the frequency of alternating current issued constantly, in order to make the power input to the power grid,Horizontal Shaft Wind Driven Generator you must output a stable 50Hz AC, which requires AC - DC converter to the generator output power is converted to stable Of the 50Hz AC.
Since the converter must convert all the electrical energy output from the generator, the capacity of the converter must be greater than the power of the generator, called the full power converter. Full-power converter is very expensive, which is one of the shortcomings of direct-drive wind turbines, and better now high-voltage high-power device prices gradually reduced, is conducive to direct-drive wind turbine applications.