Universal sail multilevel wind velocity self-adapting upright shaft aerogenerator system

Abstract

The invention relates to a universal sail multi-step wind speed self-adaptive vertical shaft wind-power generator system, mainly consisting of a tower frame, an industrial personal computer PLC, a power transmission controller, a generator set, a generator set installation base and a wind meter sensor; wherein, the tower frame is fixed on a tower foundation by anchor bolts and connected with the generator set installation base; the tower frame is provided with a stabilizer ring; the industrial personal computer PLC is connected with the generator set and the wind meter sensor through a power transmission control cable; the power transmission controller is connected with the generator set through the power transmission cable; the generator set consists of a stator, a rotor and a speed increasing box; the generator set is fixed on the generator set installation base through a flange; the invention is characterized in that the generator set is a vertical generator set; the mainshaft of the speed increasing box is provided with a squirrel-cage-shaped sail frame and a multi-step sail; the squirrel-cage-shaped sail frame is provided with at least two main sails, two auxiliary sails and two breeze sails with different areas respectively; each step sail is connected with each other through a sail shaft. The invention can convert the wind energy into the power energy with high efficiency.

Description

technical field [0001] The invention relates to the technical field of renewable energy power generation, in particular to a multi-stage wind speed self-adaptive vertical shaft wind power generator system for a universal sail that utilizes wind resources to generate power. Background technique [0002] As one of the fastest-growing renewable energy technologies and most likely to realize commercialization and industrialization, wind power generation has made great progress in the past 10 years. At present, the world's wind power generation technology is developing towards large-scale single-unit capacity, variable-pitch wind turbines, variable-speed wind turbines, offshore wind farms above the megawatt level and their applicable wind turbines. [0003] my country is rich in wind energy resources. It is estimated that the wind energy resources that can be developed are equivalent to about 1 billion kilowatts. Even if half of them are developed, there will be 500 million kilow...

AI Technical Summary

Problems solved by technology

[0004] The rotor wind power generator that adopts at present has the following problems: (1) Although a yaw device is provided, the above part of its rotating support is very heavy (the weight of the megawatt-level nose reaches several thousand tons, including generators, speed increasers , fins, pitch adjustment mechanism, fairing, wind direction self-tracking mechanism, etc.), and the generator needs to automatically find the wind direction, so the failure rate of its rotating support mechanism is high; (2) its power output line adopts a slip ring device , the failure rate is high, and frequent maintenance and updates are required; (3) its wings are equivalent to aircraft rotors. Because they use lift to do work, they have very high requirements for machining accuracy and materials, resulting in high costs, which directly lead to wind power prices. (4) In order to increase the power generated by a single machine, it is necessary to increase the sweeping area, resulting in high wing tip speed and high noise

At present, the radius of blades of megawatt wind turbines has reached 70-80m, which creates a great contradiction between the rotational speed and the radius of rotation. If the radius of rotation is small, the power of a single machine will not be large. If the radius of rotation is large, the wingtip speed will be supersonic and shock waves will be generated. Not only reduces the efficiency, but also makes a lot of noise; (5) When encountering super wind speeds such as typhoons and hurricanes, although the blade device has a pitch adjustment device, the pitch can be adjusted to zero lift and locked in a hurricane situation. However, it is still impossible to ensure that the wings are not damaged, so not only the maintenance cost is increased, but also the wind energy cannot be fully utilized; (6) the wing tip is easy to enter a stall state, which reduces the efficiency; (7) because its blades are installed horizontally, when looking for The direction of the wind needs to go through a series of complicated processes. At the same time, the steering is realized by the yaw mechanism. The response to the change of the wind direction is extremely slow, and it cannot adapt to the short-term change of the wind direction; (8) when the blade rotates, it will cause a certain visual Pollution, dizziness, discomfort if viewed for a long time

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