Lynx Vawt with Axial Flux Alternator

[dtvgmedia]

You do not want to use a voltage doubler because of the voltage drop across the doublers diodes * the amps running through them = wasted watts.

A big waste of energy comes from using cups or Savonius blades to catch the wind. Savonius blades also have a lower tip speed ratio then say a Giromill design. Giromill blades will spin faster then the wind giving you higher RPM's for the same wind.

[1819engel]

windkraftanlage-ersatzteile.be­epworld.de

[SentientAlgorithm]

Just a thought, have you considered using pulleys with a belt to increase the RPM on the magnets?

[charlie1957able]

hi I was wondering if you would be so kind to tell me if I can buy one of the axial flux alternators and is yes where?

[depravedpuma]

how does higher gauge wire and more turns help to get more voltage?

[billmalta1]

@depravedpuma

Yes... but less amps depending on the number of turns

14 gauges--- about 40 amps 18 gauges-------- about 20 amps

for the connection i think (star connection for vawt) and (delta connection for HAWT) works best...

Not so sure about these numbers but u can check it out on internet .

[depravedpuma]

Does the strength of the magnets creat more volts or watts or amp and if so what is the pull strength of your magnets?

[superbri007]

pretty cool, my first green energy project is converting a ceiling fan into a generator.

I have the alternator gutted, just need to purchase a bunch of neodymium magnets and the pieces to mount it to a tall poll of sorts.

[ELPISON1000]

WHAT WAS THE TOTAL VOLTAGE THIS UNIT PRODUCED? SEEMS TO ME IS TO BIG AND MAGNETS SEEM POWERFULL TO PRODUCE 6 OR 11 VOLT

I THOUGHT IT WAS GOING TO BE A 500 TO 1000 WATT MAKING GENERATO

WITH ALL THAT WORK BETTER TO USE AN ALREADY BUILT CAR ALTERNATOR BUT THANKS FOR THE VIDEO!!

[beulahlandsouthband]

nice job you should try the same setup also on the the bottom for 2 times the power same wind.

[wiboater4]

Are you on Windgen.orgs forum?

[LynxSteam]

@wiboater4

No, but I have used their products, great to deal with, fast and accurate order processing. I will check out the forum, thanks!

[wiboater4]

@LynxSteam They don't sell anything, They are just a group of people interested in Vertical axis turbines. I think your confusing them with another site. Magnets for less has the best prices on those magnets. and the wire.

[conspiracy777]

I would like to build one of these but the learning curve is really steep for me.

I have a lot of questions. Would you have time to walk me through some of the theory?

I'm trying to figure out the relationship between wire thickness, number of coil wraps, number of coils, number of magnets.

And then there is the whole 3 phase thing. How you go from 3 phase AC to charge a battery bank. (the whole rectifier thing).

I sort of understand it, but I'm still pretty much in the dark.

lol

[lorenzoquaresima]

Thake a view of my turbine, do you like?

[alex451361]

hi could you tell me what size magnets you used and shape please

[LynxSteam]

@alex451361

The magnets are wedge shaped 1/4" thick. 24 total magnets on 9" plates. 9 coils. These were purchased from windgen kits.

[imikewillrockyou]

Yes, we appear to be thinking alike. Very nice turbine and your home built alternator is awesome too. You know I just might build one of those just because it would be a fun project.

[565Customz]

good explanation with the turns/amps/volts. my new design will have about 30 (maybe more) coils, each coil however will be stand alone,and will be shaped like a tube, about 1.5 inch in diameter about 2 inches long. standalone for easy replacement if one burns up. going 2 be prototype model 4 production units. what do u think i should use 23 or 15 gauge wire? due to the high coil count i should think there will be ample voltage so maybe larger wire will be better for amps?....opinions?

[LynxSteam]

A 2" deep coil is extreme. The magnetic flux will be weak through anything past 1/2". The flux has to be at a 90 degree angle to the winds. Do some experimenting with one coil and the direction of the magnets passing with a volt meter. May not be what you expect. 23 gauge wire will afford you about 8 amps.

[565Customz]

it actaully will be do inches long, its a radial design though..think papertowel tube with the magnets traveling down the length of it

[LynxSteam]

Ok, not sure what you are doing, but if it is like a linear alternator with the magnets passing through the coils, think flux change. Each coil needs to see a flux flip rapidly. I have made these, you might want to run your idea by me so I can advise.

Each coil should be maybe 1/2" wide by 1/2" thick. The way magnets are arranged is a bit different. Every third coil is wired in series. So over a span of 2", you could have 4 separate coils.

[hearttobefelt]

what is the relationship between wire size and number of turns relative to voltage and current output ?

assuming you have ample wind

[LynxSteam]

Heavier gauge wire (in this case 15 awg) can conduct more amps than thinner wire. More turns equals more voltage. Each turn of wire generates a certain amount of a volt as the magnets pass. At 30 rpm about a 10th V. At 60 rpm 1/5 V. At 120 rpm 1/3 volt. In this alternator there are 65 winds.

The compromise you have to settle on is how many winds of what gauge wire. There is only so much space.

The solution for the VAWT is not the same as a HAWT.

[LynxSteam]

Variables that effect power output are magnetic flux strength, and flux change (rpm). Converting the ac to dc and then clamping the output to say a 12 volt battery causes the power output to take the form of amps. The battery wont accept higher than 14.5 volts. Watts equals volts times amps. So with 145 watt output the battery will be charged with 10 amps. If you have 4 batteries - each will receive 2.5 amps.

The power in the wind is a whole other story. But wind is free.

[TheGirishIyer]

@hearttobefelt

The relation between the wire size and the number of turns is more the number of turns u increase the coil resistance which will increase Copper Loss (I x I x R) where I=amps and R=Resistance.

But for increasing the voltage generated u have to increase the number of turns, but with increased number of turns you can reduce the Resistance value either choosing a Thicker Copper or using parallel strands of the same copper

[micsolaire]

good job

[bg0821]

looks good neat job.