Wind power classification

The wind's kinetic energy is converted into mechanical kinetic energy, and mechanical energy is converted into electric kinetic energy. This is wind power generation. The principle of wind power generation is to use wind force to drive the wind turbine blades to rotate, and then to increase the speed of rotation through a speed increaser to promote generator power generation. Wind power is forming an upsurge in the world because wind power does not require the use of fuel and it does not generate radiation or air pollution.

Although there are many kinds of wind power generators, they can be divided into two categories through electric induction analysis: 1 Horizontal axis wind turbines, where the rotation axis of the wind wheel is parallel to the wind direction; 2 Vertical axis wind turbines, rotation of the wind wheel The axis is perpendicular to the ground or airflow direction.

Horizontal axis wind turbine

The horizontal axis wind turbine division is divided into lift type and resistance type. Lift-type wind turbines have fast rotation speeds and drag-type rotation speeds are slow. For wind power generation, lift-type horizontal-axis wind turbines are often used. Most horizontal-axis wind turbines have wind devices that can rotate with changes in wind direction. For small wind power generators, the rudder is used for the wind device, and for large wind power generators, the transmission mechanism composed of the wind direction sensing element and the servo motor is used.

Wind turbine wind turbines are called upwind wind turbines in front of the tower, and wind turbines are downwind wind turbines behind the tower. There are many models of horizontal-axis wind turbines. Some wind turbines have reversing blades, and some wind turbines are installed on one tower to reduce the cost of the tower under certain conditions of output power. There are also levels. Axis wind turbines generate vortices around the rotor, concentrate air flow, and increase airflow velocity.

Vertical axis wind turbine

Vertical axis wind turbines do not need wind when the wind direction changes. At this point, it is a great advantage compared to the horizontal axis wind turbines. It not only simplifies the structural design, but also reduces the gyro force when the wind turbine winds against the wind.

There are several types of vertical-axis wind turbines that rotate with resistance. Among them, there are wind turbines made of flat plates and quilts. This is a pure resistance device; S-type wind turbines have partial lift, but they are mainly resistance devices. These devices have a large starting torque, but the tip speed ratio is low. In the case of a certain size, weight, and cost of the rotor, the power output of the ** is low.