After the hub motor of an electric bicycle is converted into a wind turbine, its power generation efficiency does have a certain relationship with the power of the motor. However, it should be noted that this relationship is not simply proportional. In theory, the potential power generation capacity of a larger motor may be higher after being converted into a generator, because high-power motors usually have stronger magnetic fields and current handling capabilities. However, the actual generated power is also affected by many factors such as wind conditions, generator design, and conversion efficiency.
As for the difference between 12v and 48v motors after being converted into generators, they are mainly reflected in the following aspects:
1. Output voltage
A generator converted from a 12v motor will primarily output 12v or close to it under ideal conditions, while a 48v motor may output a higher voltage. However, it is important to note that the output voltage is not constant and fluctuates as wind conditions change.
2. Current handling capacity
Due to differences in design, the current handling capacity of the 48v motor may be stronger, so it may Has higher power generation potential. But this also depends on the specific motor design and modification options.
3. Application scenarios
Generators with different voltages are suitable for different application scenarios. For example, a 12v generator may be better suited for powering low-voltage equipment, while a 48v generator may be better suited for powering equipment requiring higher voltage.
Converting the hub motor of an electric bicycle into a wind turbine is a complex process, involving knowledge in multiple fields such as motor design, power electronics, and wind energy conversion. In actual operation, it is recommended to seek professional help to ensure the safety and effectiveness of modification. At the same time, since the modified generator may not be able to achieve the efficiency and performance of the original motor, its actual performance and limitations need to be fully considered when using it.
How to make a small wind turbine?
The efficiency of electric vehicle motors is 70%-90%, and the efficiency of wind turbines is 30%-50%. Because the efficiency of electric vehicle motors and wind turbines are two different concepts, they cannot be compared simply.
1. Efficiency of electric vehicle motors: The efficiency of electric vehicle motors refers to the ability of electric vehicle motors to convert electrical energy into mechanical energy, usually expressed as a percentage. The efficiency of electric vehicle motors is affected by many factors, such as motor design, materials, rotation speed, load, etc. Generally speaking, the efficiency of electric vehicle motors is between 70% and 90%, and efficient electric vehicle motors can reach an efficiency of more than 90%.
2. Efficiency of wind turbine: The efficiency of wind turbine refers to the ability of wind turbine to convert wind energy into electrical energy, usually expressed as a percentage. The efficiency of wind turbines is affected by many factors, such as the design of the rotor, bladeFilm material, rotation speed, wind speed, etc. Generally speaking, the efficiency of wind turbines is between 30% and 50%, and efficient wind turbines can reach an efficiency of more than 50%.
A simple method is to use a permanent magnet DC motor as a generator and install a wind wheel drive. Since it is impossible to rotate at a very high speed, you can choose a DC motor with high voltage resistance, so that even if it is low, you can get For higher voltage, you can choose low-voltage power supply, which can stabilize the voltage to charge the battery. You can choose lithium batteries for mobile phones. You need to stabilize the voltage to no more than 4.5V. You can connect a silicon diode in series to illuminate the high-brightness light-emitting diode. , this kind of battery has no memory, so you can use it with confidence. The mechanical part can be made by yourself according to your own needs