discussion: The best way to obtain electricity of a rotating shaft.

[bugler]

(not sure if the word is rod or shaft. Are they the same?)

Let's say I have some way to produce mechanical energy in the form of a rotating shfat. What would be the best way to obtain electricity?
The electricity is not meant to charge batteries but to run a load.

Would it be DC with an inverter?
Would it be directly AC?

I think we need to have a clear idea of the best way to do things for each step of the process of getting energy.

thanks.

[Joit]

Hi,
Shaft is ok, rod is more like a stick, like a welding Rod.

I think i would prefer to get AC from it, but with a Disc Coils and Magnets
like here Windmill Plan - DIY Turbine Generator Wind Power DIY Do-It-Yourself Plan Guide

Unfortunatly when i look for diy windmill generator i only get this Scamsites
but nothing with free Plans anymore,
thats something i only can blame this Scammers,
they try to take over anything where the word Free is involved in
and produce a Step back into the Direction what it should be.

It must be redirected then, but its maybe a Way with the best Gain.
Beside i do think more about it to generate it from interrupted Coils,
but its more Work to control the Circuit and it may dont have the same Gain
as the continuing generating.
Right now i would like to build the Adams Motor, but have not the Time to assemble it in the Way i want to do it.

I build a Waterwheel lately with something like the Newman motor was made,
but i cant place enough Coils there, and dont get that much gains, when
the Magents are not very strong and the Wires to thick.

[nilrehob]

I'd like to use one of my toroids in a generator setup similar to:
Generators and transformers with ... - Google Patent Search
BEST AVAILABLE COP - Google Patent Search

Still lacking the time for it though

http://www.energeticforum.com/renewa...al-stator.html

Other than that i believe in shortcuts,
skipping as many conversions as possible,
so AC or DC depends on the load I guess

/Hob

[everyidea]

Permanent Magnet Alternators

You can connect these alternators up to just about anything.

Regarding AC or DC, it all depends how far your generator is from your work device. If it's a foot or two away then go direct DC. If it's farther than 10 feet or so then go AC and convert it to DC at your work device.

rw

[bugler]

If it's a foot or two away then go direct DC. If it's farther than 10 feet or so then go AC and convert it to DC at your work device.

rw

But converting from DC to AC is expensive. Isn't it?

Would be cheaper to obtain directly AC and make 50/60Hz?

[FRC]

Jolt

Hi,
Shaft is ok, rod is more like a stick, like a welding Rod.

I think i would prefer to get AC from it, but with a Disc Coils and Magnets
like here Windmill Plan - DIY Turbine Generator Wind Power DIY Do-It-Yourself Plan Guide

Unfortunatly when i look for diy windmill generator i only get this Scamsites
but nothing with free Plans anymore,
thats something i only can blame this Scammers,
they try to take over anything where the word Free is involved in
and produce a Step back into the Direction what it should be.

It must be redirected then, but its maybe a Way with the best Gain.
Beside i do think more about it to generate it from interrupted Coils,
but its more Work to control the Circuit and it may dont have the same Gain
as the continuing generating.
Right now i would like to build the Adams Motor, but have not the Time to assemble it in the Way i want to do it.

I build a Waterwheel lately with something like the Newman motor was made,
but i cant place enough Coils there, and dont get that much gains, when
the Magents are not very strong and the Wires to thick.

Jolt check this out. YouTube - PART 1 HOW TO CEILING FAN WIND TURBINE

These can also be adapted to be straight generators, not just wind powered.

FRC

[Joit]

TY for that Link FRC
A friend told me about these Motors, and that you can easy rebuild them to Generators, when you place some Magnets on them.
I even got one, what has a (bit weak) Ring Magnet outside around,
the Stators inside are shifted cascaded.
But the Motor is rated for 220v 0,3Ah. So i guess, it wont be very much more, what it does generate.
I like the Idea, it is close ready assembled, and someone only need to put the Parts together.
And another big Problem is, that i like to tinker around, and allways try to get some more out.
The cascaded Arrangement is no bad Idea, and it may even work better, when you put more Magnets there like the Flynn Motor has.

[Aaron]

thread titles

Please start the tread topics in different ways so
prevent confusion between the thread titles as only
part of the thread title shows in the list of threads.

[kcarring]

Let's talk about what DOESN'T WORK for a second, better yet, read this:

https://docs.google.com/viewer?a=v&p...ZDgyNjM3&hl=en

Let's have a look at the work of a man who TRULY knows what the f%$! he is talking about when it comes to wind, and permanent magnet alternator design:

Hugh Piggott's home page

and his blog:

Hugh Piggott's blog | Scoraig Wind Electric News

Download his free (but outdated) plans AND DO YOUSELF A FAVOR READ THIS BEFORE YOU ATTEMPT TO BUILD ANYTHING.

Download pdf documents (Scoraigwind)

Permanent magnet alternators MUST be designed for their EXACT environment or as close to, or they FAIL MISERABLE. A turbine for one speed will shutdown at the speed a second one was design to start.

READ HUGH's books if you are at all thinking about building this.

Rooftop Turbines SUCK, I have wasted too much money in that direction, and a bitter taste remains. I only have one left and it has a 4 km/h startup and 20 km/h shutdown. The only way to go, for MY AREA. Not a big producer.

For lowspeed application, very lowspeed applications you might want to consider building a NO IRON permanent magnet alternator. This will have no cogging. Cogging is a real problem is low wind startup scenarios, or light duty force applications.

In extremely low power situations you may want to experiment with Bedini circuits that use every possible volt to do something.

[kcarring]

WindBlue Power - The best wind generator parts and PMA Permanent Magnet Alternators on the web and other AC delco alternator mods work but they SUCK because they are a big chunk of cog-inducing iron that fights your every attempt to make power.

That's why you graduate to Hugh Piggot design mentality!

Solid knotless birch plywood Grade A is very strong and sturdy stuff. It is not a mod method, it's a "from scratch" method.

Another interesting article/site on cogging is here:
TheBackShed.com - Decogging the alternator

Another less talked about method I am trying to research (but not finding a lot of information) goes along these lines:

A motor stator rotor combination cogs... because of what? The fact that the magnet is stationary. What if that magnet were allowed to spin? If the cogging effect slows the alternator due to magnetic repulsion .. why not let the magnet just spin under this force instead of slowing the machine down? A spinning magnet whose field is all the same on one face ought to still induce a current whether it is stationary, or not... then it's a matter of having them lock into place, somehow.. to start producing the real current... after startup...

[kcarring]

Another excellent page:
Alternator and Generator Comparison for Wind Power

[bugler]

Another excellent page:
Alternator and Generator Comparison for Wind Power

Hi.

Thanks for the info.

I wonder if the information about windgenerators is readily applicable to non-wind systems.

It would be interesting to know how to make a generator to obtain a certain poewr knowing the torque and the rotating speed.

[kcarring]

I wonder if the information about windgenerators is readily applicable to non-wind systems.

I think so, definitely. You'll have to take your rotation and produce power somehow. You'll have a certain amount of speed, and torque, anyway you produce it... and an optimize permanent magnet alternator will give you the flexibility to design it however you wish. One needs to be specific about the source energy to answer that properly. If you have rotation, PMA is an option. If the force is very very weak, go with DC dynamo, or DC generation.