Generally, a certain wind speed is needed to generate electricity
To charge a mobile phone, you do not need wind power, you have to crank it by hand (the biggest disadvantage of wind power is the low conversion rate)
Wind power refers to the rational use of wind power Nature's wind energy
Generally speaking, the force must be more than 10,000 Newtons to be valuable (the indicator that is met for 8 or 10 hours a day is the amount of force required)
I think Make a small household wind turbine (DC motor generates electricity). Who can explain the process and principle (and the matching of gears)? If you answer well, you will be rewarded with high scores
Hand-cranked generators are different from ordinary generators. The difference is that the coil rotates in the magnetic field, but the power is human power. The average power of a human is 0.1 to 0.2 horsepower, which is about 73 to 150 watts of power. It cannot be sustained for a long time. Therefore, the power of a hand generator will not More than 100 watts.\x0d\Principle of hand-operated generator\x0d\Generators are usually composed of stator, rotor, end cover, base and bearings. \x0d\The stator consists of a machine base, a stator core, a wire wrap winding, and other structural parts that fix these parts. \x0d\The rotor consists of the rotor core, rotor magnetic poles (with magnetic yoke and magnetic pole windings), slip rings (also called copper rings and collector rings), fans and rotating shafts. \x0d\The stator and rotor of the generator are connected and assembled through the bearing, base and end cover, so that the rotor can rotate in the stator. A certain excitation current is passed through the slip ring to make the stator become a rotating magnetic field. The stator coil is made The movement of cutting magnetic lines of force generates an induced electric potential, which is drawn out through the terminals and connected in the loop to generate current.
Power generation process:
Fan blade---gearbox---DC motor---rectifier bridge (polarity protection)----battery
Principle:
The wind rotates the blades (similar to electric fan blades) to drive the gearbox to make the DC motor speed exceed the rated speed. At this time, the voltage generated on the motor will be equal to the motor working voltage, generally 12V or 24V, because batteries are generally at these voltages.
Difficulty:
To make a gearbox, you need to calculate the transmission ratio. For example: the rated speed of the motor is 3000, the fan blade rotates 10 times per minute, and the motor end reaches 3000 through the gearbox. rpm. At this time, the transmission ratio is 1:300.
The above data are obtained from the small-power hand-operated generator model I have made and are for reference only.