multi-blade wind generator

Abstract

The invention provides a multi-blade wind driven generator which is improved on the basis of an existing wind driven generator and adopts a down-wind type structure. Multiple groups of rotor blades are used; blade fixing rods are obliquely arranged; each group of rotor blades consists of five corrugated blades; an included angle between initial positions of each group of rotor blades and a wind line parallel to a low-speed shaft is 115 degrees; the multiple groups of rotor blades play a role of a tail vane and can automatically determine wind direction; and external four groups of blades respectively rotate along the wind direction, and the first group of rotor blades always do work, so that wind energy of different levels can be fully utilized, galloping due to strong wind is avoided, and further a yaw motor is omitted. The corrugated blades of the multiple groups of rotor blades are made of glass fiber reinforced plastics; the heights of corrugations at two edges of each corrugated blade are greater than those of other corrugations, so that the whole corrugated blade can capture wind and the utilization rate of wind energy is improved to 80 percent or above 80 percent; and the power generation efficiency is improved, and the multi-blade wind driven generator can generate power within a range that the wind speed is 2 to 30m / s.

Description

technical field [0001] The invention relates to a multi-blade wind power generator, which belongs to the technical field of wind power generation. Background technique [0002] With the increasing depletion of resources and the strengthening of environmental protection awareness, wind power generation is the most competitive and promising renewable energy technology. A wind turbine is a power machine that converts wind energy into mechanical work. Blades are an important mechanism of a wind turbine. The blades capture the wind and transfer it to the rotor shaft, which in turn enables the generator to generate electricity. [0003] The composition of modern wind turbines includes a low-speed shaft, a speed increaser, a high-speed shaft, a generator, an electronic controller, and a yaw motor all installed in the nacelle. The low-speed shaft, the speed increaser, the high-speed shaft and the generator are connected in sequence. The anemometer and wind vane are fixed on the n...

AI Technical Summary

Problems solved by technology

The wind generator cannot generate electricity at both low wind speed and high wind speed, and its efficiency is low; it also does not solve the yaw problem of the three-blade structure wind generator

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