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hilyfe

Just a thought

 

Windmill fan connected to an alternator

Alternator produced electricity

Itll recharged the car battery

 

Will it work?

Most alternators produced 12v i think?

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No. An alternator needs power for the field windings to generate electricity. You need a permanent magnet rotor to generate without external power. AC Delco units are often retro fitted but they need

I'm sorry to be the bearer of bad news, but a lot of people who appear to be at least as smart as you appear to be, and with certainly much more knowledge of the subject than you, have worked on this

I watched the video,  yes it looks as a solid product   He mentioned price range was not too high  but what is it   My link to CDR-King was just to show that something like it can already be boug

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Paul

Just a thought

 

Windmill fan connected to an alternator

Alternator produced electricity

Itll recharged the car battery

 

Will it work?

Most alternators produced 12v i think?

 

Some windmills are just that, a 12v alternator. Not sure of the quality, reliability, or longevity of the product. 

 

The problem with windmills is, there have been so many fly-by-night companies selling them, and promoting the wind mills as something they are not, many companies have gotten a bad reputation from that. 

 

Also, if you run a windmill, you need a diversion load, where the excess power will be directed to, once the batteries are full. 

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hilyfe

Huh? Im meant using car alternator

Use a windmill to turn it to produce electricity

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Huh? Im meant using car alternator

Use a windmill to turn it to produce electricity

how fast does it need to spin ?

 

my brother did this once,  used gears / chain to to make sure the alternator was spining fastenough,  not very successful,

he runs brought ones now.. works alot better

 

Nigel

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hilyfe

Im thinking the alternator have to spin fast

So youll need a big gear connected to the windmill

And a chain connected a smaller gear thats also connected to the alternator

 

Short spin of the windmill will be a big spin on the alternator?

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thebob

 

 

Will it work?

 

No. An alternator needs power for the field windings to generate electricity. You need a permanent magnet rotor to generate without external power. AC Delco units are often retro fitted but they need a lot of torque to start.

 

Search for "Axial Flux Alternators" for some good plans. If I could afford the magnets I'd build one.

 

Or take the gearhead off a wiper motor and that will do it. A wiper motor is a permeant magnet DC motor. Problem is it will generate more volts the faster you spin it.

 

If you have an old printer, the square 4 wire motors are stepper motors, make blades from an old PCV pipe, and away you go.

 

Old bicycle hub dynamos? Pre 60's automotive generators? Really old Hard Drive motors. Tread mill motors. All these are worth investigating.

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Oz Jon

You are wasting your time and energy trying to build one from bits and pieces - a wind generator is not as simple as you may think.

 

If you want one - just buy one! - eg one of the boat models.

 

(in a bought one, someone has already solved all the problems that you don't even know about)

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hilyfe

Hahahhaha ok so alternator will not work

 

Found something even better

 

Portable-ST-STC-Generator-Dynamo-MD-ST-S

Dynamo

Rated at 120v to 230v

Now just attached that windmill to crank it up hahahah

You are wasting your time and energy trying to build one from bits and pieces - a wind generator is not as simple as you may think.

 

If you want one - just buy one! - eg one of the boat models.

 

(in a bought one, someone has already solved all the problems that you don't even know about)

Lol thats not the point

Im trying to figure out how to make electricity hahahah

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Paul

 

 

Im trying to figure out how to make electricity hahahah

 

As cheap and reliable as solar is, why not consider that? And, are you talking about for Hawaii? Or, are you wanting to address an issue in the Philippines?


Solar is HUGE in Hawaii, if you didn't know that already.

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hilyfe

As cheap and reliable as solar is, why not consider that? And, are you talking about for Hawaii? Or, are you wanting to address an issue in the Philippines?

Solar is HUGE in Hawaii, if you didn't know that already.

Lol paul our house have solar panels

Im talking about Philippines

As we all know some parts of Philippines still doesnt have electricity

Or couldnt afford one

So im trying to come up with an idea with less money involved

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Paul

 

 

So im trying to come up with an idea with less money involved

 

You cannot use that sentence, in any way, when it concerns off-grid solar power. If you have access to a water source where a hydro powered generator could be set up, then you may save some cash. 

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thebob

Im trying to figure out how to make electricity hahahah

 

 

It's quite easy. Just move a coil of wire through a magnetic field.

 

 

As cheap and reliable as solar is, why not consider that?

 

 

Because the sun doesn't shine at night... but the wind blows.

 

Motor cycles use permanent magnet alternators. The rotor is a steel ring with lots of magnets in it and the stator (the bit that stays still) is a bunch of copper coils. 

 

So get a machine shop to adapt a multi cab wheel spindle. Bolt some blades on the rotor and put the lot on a pivot on the top of a pole, with a tail to keep it facing the wind.

 

The problem is that it will take a lot of wind to start it spinning, but it will be very easy to for it to spin the blades to pieces once it gets going.

 

Joining the wires together will stop it spinning, so a switch to do that will act as a brake. So what you need is a spring loaded switch activated by the rotation of the hub so that it joins the wires before the hub spins itself to pieces. Very old car distributors used a similar centrifugal switch to advance the ignition. You should be able to adapt one. Find a scrap distributor from a 1960's 4 banger, a VW one would do.

 

This will give you AC current at a frequency depending on the speed of the rotor. So you need to overpower the the blades, and set the cutoff switch just after it hits 60Hz. Then you get a wall wort transformer, that does 230V to 12V, chop the diodes out of it, and wire it in backwards. This will give you somewhere near 230V AC out, but it will fluctuate horribly with wind speed. It should be OK for light bulbs though!

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Paul

 

 

Because the sun doesn't shine at night... but the wind blows.

 

That's fine and good. But, it helps if you live in an area where the wind blows hard enough to cause a wind turbine to generate power. They don't pay for themselves by sitting pretty on a pole and looking like they are supposed to do something. 

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