Wind turbines are actually made up of two parts, one is the wind turbine (blade) and the other is the generator. The generator is no different from a regular generator. A generator is mainly composed of a rotor and a stator. Generally, the rotor of a generator mainly consists of the main shaft and the wire windings on the shaft, which are rotating parts. The stator is mainly composed of magnets and housings, which are fixed; rooms. The so-called external rotor motor is exactly the opposite. The magnet and housing rotate, but the main shaft does not rotate. According to the principle of power generation, as long as there is relative movement between the wire and the magnet, the wire will cut the magnetic lines of force and generate current. Therefore, whether the main shaft drives the rotating wire or the shell drives the wire. magnet to rotate, it can generate electricity. However, due to the large burp radiusation of the case, large generators generally do not use external rotors.
The principle of the wind turbine is as follows: the wind blows on the blades and the blades rotate. The wind turbine shaft and the generator main shaft are connected together to drive the generator main shaft to rotate and outward. The case is fixed. This is the commonly used internal rotor wind power; If the wind turbine shaft is connected to the generator case, it will cause the generator case to rotate. and does not turn. This is an external rotor wind turbine. The ceiling fan mentioned upstairs is indeed a good example. The ceiling fan motor is an external rotor motor, and the structure of the motor and generator is very similar, but the working principles are exactly opposite to those of the blades. The ceiling fan and wind turbine blades are also exactly opposite each other, so thate ceiling fan can also be considered as an external rotor wind turbine with the opposite operating principle.
A homemade 220 V generator requires the following:
220 V generator (housing, stator core, stator coil, rotor, permanent magnet, bearings, blades cooling, etc.).
With a generator, you also need equipment to drive the generator: gasoline engine, diesel engine, fan blades, hydraulic turbine, etc.
It is impossible to make your own generator, so it is best to buy a ready-made one.
Disassemble a small DC motor from an old used tape recorder or DVD player, and install a small fan blade on the motor shaft, or buy it directly and make sure that it comes with a sun hat with a small fan, no batteries. Solder a light-emitting diode onto the motor terminal, pred reference (catchy and low starting voltage). Use the wind to blow the fan blades to turn the engine.