The motor used in the fan can be converted into a generator. You can disassemble the rotor, carefully remove the aluminum bars from the rotor and the aluminum shorting rings on both ends, and add the field winding. Add slip rings, carbon brushes and excitation circuits in series. This method is difficult to use, but the output voltage can be adjusted by adjusting the magnetism.
Using an AC motor as a generator is called an AC asynchronous generator. The method of matching and using is very simple. Simply connect a capacitor of appropriate capacity to the wire of an ordinary asynchronous motor, use a diesel engine or other power supply to drive the motor, and the motor will become a generator. Speed is the rated speed used as a generator; total capacity selection: on engines larger than onekilowatt, choose triangular connection capacitor, which can be 10 μF (microfarads) per KW, and star connection 17 μF (microfarads). The voltage resistance must reach or exceed 400V before it can be used. The efficiency of this asynchronous generator is a maximum of 80% of the original power of the electric motor.
Directly replace the original rotor with single or double pole permanent magnets. The magnetic poles of permanent magnets should be as close as possible to the stator, but not in contact. By rotating the rotor (or permanent magnet rotor), voltage and current can be output through the stator. If you increase the speed, the tension can reach a very high level.
Generators and electric motors have different functions, so they are also designed and manufactured differently. Even if an ordinary electric motor is converted into a generator, it will be "successful"and its effectiveness will be very low.
Does the hub still need to be removed if a wind turbine blade is damaged?
Wind turbines are actually made up of two parts, one is the wind turbine ( blade), and the other It is a generator, which is no different from an ordinary 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 whether theshell drives the wire. magnet to rotate, it can generate electricity. However, due to the large rotating radius of the housing, 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.és to those of the blades. The ceiling fan and the wind turbine blades are also exactly opposite, so the ceiling fan can also be considered an external rotor wind turbine with the opposite operating principle.
Required. When a wind turbine blade is damaged, the entire wind turbine must be shut down for repair. During the repair process, the wheel hub should be removed for further inspection and repair. This is because there is a close connection and mating relationship between the blades and the hub. If the blades are damaged, there is likely a problem with the hub as well.