Real-time variable-pitch wind wheel and vertical-axis wind turbine

Abstract

The invention provides a real-time variable-pitch wind wheel which comprises a wind wheel bracket, wind propellers and wind propeller rotating shafts. At least three wind propellers are arranged on the wind wheel bracket circumferentially. Each wind propeller is rotationally connected with the wind wheel bracket through the corresponding wind propeller rotating shaft. The real-time variable-pitchwind wheel further comprises a driving device which drives the wind propellers to rotate by driving the wind propeller rotating shafts, a sensing device which is used for sensing the wind environmentand the rotation condition of the real-time variable-pitch wind wheel, and a controller which is electrically connected with the sensing device and the driving device. The controller controls the driving device to operate according to parameters detected by the sensing device. The windward area of the wind propeller on the windward semi-circumference is larger than the headwind area of the wind propeller on the headwind semi-circumference through driving of the driving device. The invention also provides a vertical-axis wind turbine. The real-time variable-pitch wind wheel and the vertical-axis wind turbine have relatively high wind energy utilization rate and conversion rate, and the stress conditions of components of the wind propellers and the wind wheel bracket, which are split, are more reasonable.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a real-time variable pitch wind rotor and a vertical axis wind power generator. Background technique [0002] A wind turbine is an electrical device that converts wind energy into mechanical energy and mechanical energy into electrical energy. At present, large and medium-sized wind power mainly adopts horizontal-axis wind turbines, which are lift-type wind turbines, which have the advantages of high speed and high utilization rate of wind. The mainstream wind turbines currently in commercial operation are basically horizontal axis wind turbines. [0003] The wind turbines are supported by vertical towers. With the increasing capacity of horizontal axis wind turbines, the capacity of mainstream wind turbines has reached 2 MW to 3.5 MW. The weight of the cabin has reached 70-100 tons, and the height of the cabin has reached about 100 meters. The production, transportation a...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies in the prior art, the present invention provides a real-time variable-pitch wind rotor and a vertical-axis wind power generator to solve the problem of vertical-axis wind power generation caused by the fixed angle between the wind blade and the wind rotor support in the prior art. The wind energy utilization rate of the machine is low and the stress state of the components of the vertical axis wind turbine is unreasonable.

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