Wind turbine blade with automatic windward area adjustment function

Abstract

A wind turbine blade with the automatic windward area adjustment function comprises two movable blades at the top, a fixed blade on the root portion, an electric hinge connected with the movable blades and the fixed blade, a hollow framework installed at the top of the fixed blade and arranged between the two movable blades, and further comprises a wind speed sensor installed on a wind turbine tower, and an electric hinge control system using a computer as a carrier. When a wind turbine operates, the wind speed is measured through the wind speed sensor in real time, the wind speed signal is transmitted to the computer, the electric hinge control system installed in the computer determines the blade swept area range capable of keeping the rated output power according to the current wind speed and controls the electric hinge to drive the two movable blades connected to the electric hinge to rotate to an appropriate angle gear, as a result, the blade swept area can meet the condition that the wind turbine is kept within the rated output power range with the current wind speed, and the wind speed application range of the wind turbine is greatly expanded.

Description

technical field [0001] The invention relates to a blade of a wind power generator, in particular to a blade of a wind power generator with an automatic adjustment of the windward area. Background technique [0002] The principle of wind power generation is to use the wind to drive the blades of the wind turbine to rotate, and then increase the rotation speed through the speed increaser to promote the generator to generate electricity. The formula for the output power of the wind turbine is as follows: [0003] P = 1 2 C p ρ AV 3 [0004] In the formula, [0005] P: the output power of the wind turbine; [0006] C p : Wind energy utilization coefficient; [0007] ρ: air density; [0008] A: blade swept area; [0009] V: wind speed. [0010] According to the formula of the output power of the wind turbine, the output power of th...

AI Technical Summary

Problems solved by technology

According to the current wind power generation technology, the wind speed of about 3 meters per second can start to generate electricity. However, the wind speed is not controlled by humans. When the wind speed is too high, the output power of the wind turbine is prone to overload, so new technology is needed Make the wind turbine maintain a relatively stable output power under different wind speeds

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