This can be considered the smallest wind turbine in the world. The diameter of the fan is only 2.8cm to 6cm and it can automatically adjust the wind direction
Generator size 1.3 x 1.4 x. 1.7cm, generates 2.5~2.8V 70mA. Can charge 3-6 ultra-bright LED lights
Here's some common sense for making a homemade wind turbine:
Lots of people. want to produce wind power People who generate electricity almost don't know that they need to find a wind farm in advance. The search for a wind farm cannot be based on guesswork. It must be determined with an anemometer, otherwise the wind turbine cannot be installed. Many spinning wind turbines are "idling" and not producing electricity at all, as most wind turbines only start producing electricity when they reach a wind speed of 3.5 to 4 meters per second. A small wind turbinee 400 watts. seems to spin noisily. If the wind speed measured by the wind speed meter does not reach 4 meters per second, its energy production is "zero". Even if the wind speed reaches 4 meters per second, its power output is only 0.5 watts. . It must be To achieve wind speed above 8 meters per second (a leaf will be blown 8 meters in one second), the power generation capacity can reach the power generation "400 watts" shown on the manual . Therefore, many laymen, without first using an anemometer to find a suitable wind field, end up making, at best, a "landscape windmill".
How to make a hydroelectric power generation model
It's very difficult if you are purely craft-oriented, but it is truly a unique gift. I can only explain its principle to you now. . , The principle of an energy generatorHydraulic is a bit like an old waterwheel. It uses the water flow to impact the wheel to turn it, turning the rotor connected to the wheel via the bearing.
Then, in the generator coil, the electromotive force is generated through the principle of electromagnetic induction. I hope this will be useful to you. I'm afraid you'll get dizzy from many of the details, so I haven't covered them. But the most important point is that there must be an excitation coil inside the generator. It's very embarrassing, so I always buy it. Make a generator, turbine and other things by yourself.
If the water has potential. energy or kinetic energy is injected into the turbine, the turbine will start rotating if we connect the generator to the turbine, the generator will start producing electricity. If we raise the water level to flush the turbine, we can see that theThe turbine speed increases. Therefore, it can be seen that the greater the water level difference, the greater the kinetic energy obtained by the turbine and the greater the electrical energy that can be converted. This is the basic principle of hydroelectric power.
The energy conversion process is as follows: the gravitational potential energy of the upstream water is converted into the kinetic energy of the water flow. As the water flow passes through the hydraulic turbine, kinetic energy is transferred to the steam. turbine. The hydraulic turbine drives the generator to rotate and converts kinetic energy into electrical energy. It is therefore the process of converting mechanical energy into electrical energy.
Due to the different natural conditions of hydropower plants, the capacity and speed of hydroelectric generator set vary greatly. Generally, small hydrogenerators andHigh-speed hydrogen generators driven by impact turbines mainly adopt horizontal structures, while high- and medium-speed generators mainly adopt vertical structures (see figure). Depends on Since most hydroelectric plants are located far from cities, they usually have to power the load via long transmission lines. Therefore, the power system imposes higher requirements on the operational stability of the hydroelectric generator: the engine parameters must be carefully selected. ; The required moment of inertia is large. The appearance of a hydrogenerator is therefore different from that of a steam turbine generator. Its rotor has a large diameter and a short length. The hydrogenerator unit requires a short time to start and connect to the grid, and the operation schedule is flexible. In addition to productiongeneral electricity supply, it is particularly suitable as a peak shaving unit and as an emergency backup unit. The maximum capacity of the hydrogenerator unit reached 700,000 kilowatts.
As for the principle of a generator, it is very clear in high school physics. Its operating principles are based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is: using suitable magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction among themselves to generate electromagnetic energy and achieve the conversion goal of energy.