Author Topic: My 17' Turbine so far  (Read 44330 times)

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nekit

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My 17' Turbine so far
« on: October 08, 2010, 05:20:27 PM »
Thought I would post some pictures of my 17' Axial Flux turbine








Adjustable tail angle


nekit

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Re: My 17' Turbine so far
« Reply #1 on: October 08, 2010, 05:26:29 PM »
More pictures


TomW

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Re: My 17' Turbine so far
« Reply #2 on: October 08, 2010, 05:57:37 PM »
Lookin good.

Thanks for the share.

Tom
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nekit

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Re: My 17' Turbine so far
« Reply #3 on: October 08, 2010, 05:59:08 PM »
Tower Bases for tilt up 100' guyed tower.  All pads are 4'x4'x4' concrete

Volvo farmer

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Re: My 17' Turbine so far
« Reply #4 on: October 08, 2010, 07:56:30 PM »
Wow! nice work there. By the looks of those pictures, you did a good job of building with a good deal of safety margin.

Please post construction details of your tower when you get a chance, there's not many 100-foot tilt up towers out there that I have seen.
Less bark, more wag.

willib

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Re: My 17' Turbine so far
« Reply #5 on: October 08, 2010, 10:16:53 PM »
Thats a nice turbine!
curious of the outer diameter of those rotors?
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freejuice

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Re: My 17' Turbine so far
« Reply #6 on: October 09, 2010, 03:17:13 AM »
Nice!
 I really like that setup!
 Wow 100 feet up? I was looking at mine the other day and thought of adding 20 more feet, its already at 65 feet and looks like its really up there!.....100 feet.... I'm green with envy!
I think I will stay below the clouds :D

Those anchor points should not give  you any trouble!....4x4, thats over a cubic yard of concrete per hole....you've got some weight there!

 More pics are required as you continue your fun! ;D

nekit

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Re: My 17' Turbine so far
« Reply #7 on: October 09, 2010, 06:59:52 AM »
Here's my specs.  Hopefully it will work out well.

It's a 17' dia  Grid Tied unit

Stator:
12 coils wound 118 turns, one in hand of 14 gage wire wound to the "Otherpower" design.  I used a high temp epoxy resin and it has cooling holes in the center of each coil.

Magnets:
32- Neo 3x1.5x.75" countersunk bolted down with cs stainless bolts and stainless band around the rotors.  Rotors are 1/2" thick 18" dia with cooling holes.

Yaw bearing:
4" tubing with bronze bushings and grease fittings.  I also used a thrust bearing on top of the Yaw shaft, that is a throw out bearing from a Ford mustang

Generator Mount:
12" forward an 10" offset

Wiring Yaw Head:
This is a used unit I removed from an old pivot irrigator.

Tail mount:
I made this adjustable with three sets of holes at 10, 14, & 18 degrees.  The tail pivot has bronze bushings and grease fitting.

I also add an adjustable shock that is a after market motorcycle steering staibilizer to cushion the tail movement.

The curved tube is for a cable that will pull the tail in by a small hand winch at the base of the tower.

Tail:
The tail is made of thin walled chromemoly tubing to keep it light.  It has bungs on the end that I can add weight as needed.

Blades:
G-222 profile carved by Royal Wind from Ash wood.

Tower:
I am currently building the tower .  It will be made of 8" x 1/8" wall tubing.  It has two 45' sections and one 10' top sections and a 43' gin pole.
It has a removable 10,000# truck winch that I can take in when I'm not using it
« Last Edit: October 09, 2010, 07:04:30 AM by nekit »

nekit

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Re: My 17' Turbine so far
« Reply #8 on: October 09, 2010, 07:23:34 AM »
Here are the controls specs:

Inverter:
Power- One Aurora PVI-6000 grid tied inverter

Control Box:

Omron k8ab-vs3 voltage adjustable relay that switches a Telemecanique LC1D258 contactor on and off.  This system switches on a 6000W dump load when the grid goes down and when the voltage goes over 450V. 

I also have a Telemecanique gv2me16 motor controller in the 3 phases from the alternator. If one of the phase get disconnected or shorts, it will disconnect the entire alternator.

At the tower I have a 3phase switch that will work as a shutdown switch by shorting the phases.

bj

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Re: My 17' Turbine so far
« Reply #9 on: October 09, 2010, 07:44:50 AM »
Nekit--Nice build.  Your attention to detail will motivate lots of us.

Welding is nice, Tig?
Thanks for sharing
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bj
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nekit

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Re: My 17' Turbine so far
« Reply #10 on: October 09, 2010, 08:19:53 AM »
Nekit--Nice build.  Your attention to detail will motivate lots of us.

Welding is nice, Tig?
Thanks for sharing
Yes all TIG welded.

I am a fabricator for a living, so a lot of the materials, equiptment and abilties I already had around.

Thanks for the compliments.

luv2weld

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Re: My 17' Turbine so far
« Reply #11 on: October 09, 2010, 09:56:23 AM »
Absolutely beautiful.
You do excellent work.
Thanks for sharing it with us.

Ralph
The best way to "kill time" is to work it to death!

jvnn

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Re: My 17' Turbine so far
« Reply #12 on: October 09, 2010, 10:05:10 AM »
I agree with the others, beautiful work.

Is that slip rings I see on top?  more info about those if you would be so kind...
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-Joel

nekit

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Re: My 17' Turbine so far
« Reply #13 on: October 09, 2010, 12:30:36 PM »
I agree with the others, beautiful work.

Is that slip rings I see on top?  more info about those if you would be so kind...
I think your referring to the yaw terminals, or whatever they are officially called.  They let the unit spin around without twisting the wires.

That is off of a pivot irrigator that they use in farm fields.
It came off and old unit that was being removed. It 8 terminals, but you can remove as many as you want. I'm only using 4.

TomW

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Re: My 17' Turbine so far
« Reply #14 on: October 09, 2010, 12:35:29 PM »

I think your referring to the yaw terminals, or whatever they are officially called.  They let the unit spin around without twisting the wires.

That is off of a pivot irrigator that they use in farm fields.
It came off and old unit that was being removed. It 8 terminals, but you can remove as many as you want. I'm only using 4.

What you call "Yaw Terminals" are generally referred to as Slip Rings here.

Most home built units simply use a pendant cable down the tower center and occasionally untwist it. Often there is a plug and socket at the tower base to allow this.

Just to clear it up.

Tom
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nekit

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Re: My 17' Turbine so far
« Reply #15 on: October 10, 2010, 10:28:15 AM »
Here's some more info I have gathered on my setup.

-I ran my Axial flux in my Bridgeport Mill and got the following voltages out of the rectifier with no load.

RPM                    DC Volts
80                       96
135                    168
200                    277
325                    423


-Also the tail is 10' long

-When I stated the offset of the generator to the yaw bearing that figure is centerline to centerline.  The amount forward is yaw centerline to the center of the blades.

Hope this info helps others.

snake21

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Re: My 17' Turbine so far
« Reply #16 on: October 10, 2010, 01:05:08 PM »
hi,just a curious question if you dont mind.how much did all these things cost you?i mean the whole system

nekit

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Re: My 17' Turbine so far
« Reply #17 on: October 10, 2010, 03:28:57 PM »
I had a lot of the materials on hand from other projects, so it's hard to say exactly.  Turbine, tower, inverter, controls and all the misc. I have probably about $6,000 in it.  $3,600 of which is the inverter.  I'm a fabricator for a living, so I get some pretty good deals on most of the materials and had all the equipment.  If some one went out and bought all the parts I would guess it would be close to $10,000.

I'm doing it for fun and as long as I don't go broke I don't mind spending some money.

SparWeb

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Re: My 17' Turbine so far
« Reply #18 on: October 14, 2010, 10:04:08 PM »
Here's some more info I have gathered on my setup.

-I ran my Axial flux in my Bridgeport Mill and got the following voltages out of the rectifier with no load.
RPM                    DC Volts
80                       96
135                    168
200                    277
325                    423
-Also the tail is 10' long
-When I stated the offset of the generator to the yaw bearing that figure is centerline to centerline.  The amount forward is yaw centerline to the center of the blades.
Hope this info helps others.

You bet it is helpful, Nekit.  Thanks a lot for all the information.  Especially the tower construction and performance info.  That is a lot of turns in the stator wire.  Designing for grid-tie may sound complicated at first, but I'm getting the impression that the programmable Aurora makes a lot of hit-and-miss go away.
I really look forward to seeing it in the air and pumping out the watts!
No one believes the theory except the one who developed it.  Everyone believes the experiment except the one who ran it.

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itsandbits

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Re: My 17' Turbine so far
« Reply #19 on: November 05, 2010, 07:12:58 PM »
great looking rig so far. I bet it will light a good string of leds when its up and flying
;<)

nekit

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Re: My 17' Turbine so far
« Reply #20 on: November 29, 2010, 01:55:52 PM »
Here's some pictures of my tower tubing.  Each section is 44' long and the top section is 10' long for a total of 98'.  The tubing is 8" Diameter with .109 /12 gauge wall.  The tubing is recycled from a pivot irrigator. It's guyed in four locations, at the center of each main tube and at the mating flanges.  Top guy wires will be 3/8" and the rest are 1/4".


Boondocker

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Re: My 17' Turbine so far
« Reply #21 on: November 29, 2010, 06:48:37 PM »
Just impressive! Wow!  Looking forward hearing about the 1st power the system generates.

freejuice

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Re: My 17' Turbine so far
« Reply #22 on: November 29, 2010, 06:51:45 PM »
looking good!

jlt

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Re: My 17' Turbine so far
« Reply #23 on: December 05, 2010, 06:41:36 AM »
Excellent job . But don't forget the lock nuts on every thing. Because bits  tend to fall off wind turbines. 

nekit

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Re: My 17' Turbine so far
« Reply #24 on: June 12, 2011, 08:46:59 AM »
Finally got my tower up.  Went up smoothly. Now I just need to get the gen installed.
3327-4

Boss

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Re: My 17' Turbine so far
« Reply #25 on: June 12, 2011, 11:58:52 AM »
Beautiful fabrication
Brian Rodgers
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jaysicle

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Re: My 17' Turbine so far
« Reply #26 on: June 12, 2011, 12:47:14 PM »
That is gorgeous. Attention to detail at every step.

Seems you have put a good deal of pre- thought into this and when it was time to commit, - it would be built only once, and as solid as the pyramids.

Can't wait to see what it can produce.
Marble cake is hard on the teeth.