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(1) Mechanical speed limit protection.The purpose of setting the high wind speed limit protection is to effectively reduce the wind turbine when the wind turbine input energy is greater than the total energy that the system can consume and the energy stored by the system at a certain wind speed. The absorbed wind energy prevents […]
In many cases, no matter how the wind speed changes, the speed of the generator should be kept constant or not exceed a certain limit value. For this reason, a speed regulation or speed limit device is adopted. When the wind speed is too high, these devices are also used to limit the power output […]
Due to the instability and pulsation of the natural wind, the wind speed is high and sometimes small, and sometimes strong winds and storms occur. The speed of the wind turbine impeller changes with the change of the wind speed. If there is no speed regulation mechanism, The speed of the impeller of the wind […]
At present, there are 10 types of small wind turbines according to their rated power, which are 100W, 150w, 200w, 300w, 500W, 1kw, 2kw, 3kw, 5kW, and 10kw. Its technical characteristics are: 2 to 3 blades, side-bias speed regulation, upwind direction, and high-efficiency permanent magnet low-speed generators. The unit runs smoothly, has reliable quality, and […]
The wind wheel is generally composed of blades, wheel valleys, cover plates, connecting bolt components and shrouds. The wind wheel is the most critical component of a wind turbine, which converts the kinetic energy of the air into mechanical energy. The wind wheel of most small wind turbines consists of 3 blades. The tip speed […]
Small wind turbines are suitable for areas where the annual average wind speed is above 3m/s, and the cumulative annual effective wind speed of 3~20m/s is above 3000h: the annual average effective wind energy density of 3-20m/s is above 100W/㎡. Small horizontal axis wind turbines generally consist of the following parts: wind wheel, generator, rotating […]
① Output characteristics of wind turbineThe torque produced by a horizontal-axis wind wheel with a fixed pitch varies with wind speed and rotation speed. If the rotation speed of the blade is too low, the blade will stall and the torque output by the wind wheel will decrease. Therefore, in order to obtain the maximum […]
The wind wheel of the vertical axis wind turbine does not adjust its direction with the change of the wind direction. The wind wheel of the vertical axis wind turbine rotates around a vertical axis, and the wind wheel axis is perpendicular to the wind direction. Its advantage is that it can accept wind from […]
A wind turbine whose installation position of the wind wheel axis and the horizontal plane is not greater than 15° is called a horizontal axis wind turbine. The wind wheel of a horizontal axis wind turbine rotates around a horizontal axis. The blades are arranged radially, perpendicular to the axis of rotation, and at an […]
①Basic structure of wind-solar complementary LED street lightWind-solar complementary LED street lights have the dual advantages of wind energy and solar products. When there is no wind energy, solar cell components can be used to generate electricity and the electricity can be stored in the battery. When there is wind energy and no solar energy, […]