(may be broke/outdated!)
i’m building a electric wind turbine for a school project, and i have everything but the generator/alternator. does anyone know exactly what i need to generate electricity from a source that spins at various speeds, and where i can get those supplies? all i need is the electric stuff, i have everything else figured out. and don’t tell me its not possible, i’m basically done
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3 Responses
How about a gearbox to step up the speed and a 12 volt generator for a car ? Try that first. With more voltage you will need a bigger wind turbine. start out small and work your way up Good luck!
When a voltage is applied to a DC electric motor, it rotates, the motor converts electricity to mechanical torque (force x distance).
If you do the opposite, you rotate that motor (let’s say with crank, or with a turbine), the motor will generate a DC voltage at its electrical terminals. This is true only if the DC motor is one with a permanent magnet. An alternator is that, that generates AC voltage as the ones used in cars, then converted to DC to charge the battery. You could buy a small DC motor at Hobby Stores.
The voltage will be variable and proportional to rotational speed. To complete the project, connect a bulb at the motor terminals, so you’ll see it light-up. Be sure the bulb is rated at the highest voltage that the motor will apply to it.
An automobile alternator is capable of producing a constant voltage (varying current).
so set up the wind turbine with an alternator (that has a rectifier and regulator) the output will be ~13.5 volts and the current will vary dependin on speed.
find one from a small engine, the load will be less for small propellers (turbine) and the corresponing current will be less though.
wer