AC Motor to Wind turbine?

Ok Yes I know that It has to be DC for it to work as a generator. But I found a fan from Dads greenhouse and its rather larged, used for air circulation. Is there any AC to DC fix? Any rewiring or turning the coil around? Any help or suggestions would be of great help.

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Actually, in a limited wind range, it is perfectly possible to extract power FROM a fan motor. What comes out needs to be rectified to put it into batteries. The kicker is that the fan MUST be spinning at close to the orginal specification speed to be effective. You will find plenty of resources to doing this with a Google search. AC machines are more efficient than DC ones, so real wind turbines do the same thing, but their construction is different from a fan.
Without complicated self-exciting coils, spinning an AC motor will generate zero power.

DC motors work by energizing a coil in a magnetic field - provided by a magnet - the coil gets its own magnetic field and these fields go UFC on each other, causing the motor to spin.
Generators work by moving a coil through a magnetic field (what you are referring to steve), and output AC current.
AC motors work somewhat like dc motors, but they generate THEIR OWN magnetic field using another coil. No power in the coil means no magnetic field, means no power is generated in the moving coil.

Unless you provide power to the ac motor's coils, there will be no output.
That's not entirely true, a DC motor can use "magnets" or coils - most traditional traction drives are/were separately excited, so there is a "field winding" and an armature winding. Depending on whether you wire them in series or parallel, you can get different benefits. Modern materials means that PM motors can usually beat them I think, except at very high loads.

more info - it *can* be done by energizing the coils temporarily, and having large capacitors hooked up to feedback some of the current being generated into making a new magnetic field for the next section on the motor.
This what I was alluding to. The residual magnetism in the motor is often enough to self excite the machine. The kicker is as I said, you have to be near that motor's synchronous speed.
this is true :) hardly a wind-turbine-friendly project :(
stephenm2792 months ago

how to build wind turbine with 120v motor and diagram

i have an ac motor i was hoping to make some power from off a washing machine i have a sneaky suspicion it may self excite? what could i look for ? its very high rpm tho but couldnt this be sorted threw gearing, is there any triangles or mathematics that will tell me if i can produce smaller amounts of power at a lower rpm as i do not really want 650w at 220v ac at sumthing ridiculous like 18000 rpm seconrdy was 140w at around 600 rpm thats a big fly wheel away surely? if it doesnt self excite what sort of caps would be needed 220v ? or does it take less energy to excite the coils ? also could their electro magnets be replaced with some permanernt neodyniums and be any good ? ps stator has 2 coils and the rotor has 18 pickups

Cybermurf5 years ago
there is an episode of a program called "stuck with Hackett" called "magic TV" where he removes an AC motor from a table saw and attaches it to a Volkswagen air cooled engine to power a house he took off of the grid. However, (and this is my question as well) he removed the capacitor/s from a microwave/s oven and somehow hooked them up to the output of the motor to create the electricity he needed to power the house.
here is the video:

i cant figure out how he wired the capacitors or find any wiring diagram to show me how. it can be done and this proves it, can anyone give me or find a simple wiring diagram?