Small Wind Generators Inspired by Grass Swing

Have you ever seen a minimum wind speed of 1m/s for small wind turbines? The shape resembles the shutters. The louvers are several windsurfing boards. They can swing around and collect wind power to generate electricity. This kind of swing-fan-type wind power generation device was designed and completed by 8 undergraduates of the School of Energy and Power Engineering of Huazhong University of Science and Technology. It recently won the special prize of the third National University Student Energy Saving and Emission Reduction Competition.

Looking at various traditional wind turbines, given the relatively high requirements for starting wind speeds, they are mostly used in remote mountain areas, grasslands, military posts, and coastal areas where wind conditions are superior. Some small winds and unstable wind energy resources are difficult to collect and use. The swing wind-type structure of the wind power generation device solves the disadvantages of the high wind speed of the conventional wind power generation device, so as to improve the utilization of wind resources.

Inspired by the swing of small grass, the swing-type wind generator device adopts a flexible “louver” sheet structure, on the one hand, it can greatly increase the contact area with the wind, and utilizes the principle of lever amplification to properly amplify the small wind force. Therefore, the small wind energy that can not be used by traditional fans can be collected and utilized, and the adaptability of the fan can be further improved. On the other hand, the wind energy can be maximally utilized by intelligently controlling the blind angle of the louver blade.

The working principle of this system is that, when the front wind blows, the shutters close, the swinging fan swings along with the wind to drive the generator, drives the rotation shaft through a reciprocating swing motion, and converts the large torque into a large rotation speed through the ratchet and the acceleration gear. Drive generator rotation to achieve small wind power generation.

At present, the cost of this kind of device is less than 800 yuan, and the small wind power can generate 100 degrees per year. The windsurfing board can also be used to generate additional revenue for the billboard, which can recover the cost in a shorter time and create a larger one. Economic value and social benefits.

Gold: In view of the continuous reduction of fossil fuels and the large amount of pollutants generated by the combustion of fossil fuels, people have started to research new energy sources as alternatives to meet modern demand. Wind energy is undoubtedly one of the more mature new technologies. Wind energy is a renewable energy source because it is clean, pollution-free, and therefore wind turbines have achieved rapid development.

Although this is only a kind of creativity, the contemporary university students' exploration spirit in the field of new energy highlights the responsibility and responsibility of the younger generation for the construction of a two-oriented society, that is, a "resource-saving, environment-friendly society."