Author Topic: Active Pitchcontrol  (Read 331834 times)

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kitestrings

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Re: Active Pitchcontrol
« Reply #396 on: August 26, 2013, 12:26:14 PM »
Nice looking build form the BackShed site.

The manual furling is pretty much what we've had with our Sencenbaugh.  On ours it is a piece of amour-flex conduit that houses the cable.  The problem with this design is two parts: 1) the weight of the cable - not insignificant on a ~100' tower - will affect the operation of the furling, and 2) the cable has to either slide very freely thru the cable guide or it will loop if there is enough slack.  The latter should be easy, but think about an old brake cable on your truck.  The effects of lubrication/dirt, ice, corrosion can be a factor.

I'd wondered if the ratchet could just be operated from a pull on the SO cord?

Quote
The builders of the old wooden windmills spend also long hours around the table to solv and improve their systems centuries ago , and it is still working

Yes, and the table's expanded now thru internet.

~ks

midwoud1

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Re: Active Pitchcontrol
« Reply #397 on: August 28, 2013, 10:20:00 AM »
Kitestrings.
Is it for your new windturbine 15' and 100' tower ?
With new design stator.
Rgds. - Frans -

kitestrings

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Re: Active Pitchcontrol
« Reply #398 on: August 28, 2013, 12:31:06 PM »
Yes.  I probably should have taken this to a separate post.  My apologies, but I thought the overall themes that you are exploring were relevant - namely having control of the thing from the ground in some fashion.  ~ks

midwoud1

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Re: Active Pitchcontrol
« Reply #399 on: August 29, 2013, 05:47:19 PM »
KS.

Free furling tail and actuator parking system.

Rgds. F.

mbouwer

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Re: Active Pitchcontrol
« Reply #400 on: August 31, 2013, 05:26:59 AM »
Kitestrings,

We read about your nice new developments in the making of coils.
But we are wondering: why not thinking about active pitchcontrol?

Regards Rinus

SparWeb

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Re: Active Pitchcontrol
« Reply #401 on: September 03, 2013, 03:11:37 PM »
Frans,
It appears to be a rod sliding in a tube at the end of the piston's rod...
Very interesting idea:  the tail can be forced to furl when the rod extends, but when the rod is retracted, the tail can extend or furl depending on wind loads, so a gravity-furling design will function. 

Thanks!  I wonder if I can incorporate that into the unfinished WT chassis I have on my workbench.
No one believes the theory except the one who developed it. Everyone believes the experiment except the one who ran it.
System spec: 135w BP multicrystalline panels, Xantrex C40, DIY 10ft (3m) diameter wind turbine, Tri-Star TS60, 800AH x 24V AGM Battery, Xantrex SW4024
www.sparweb.ca

midwoud1

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Re: Active Pitchcontrol
« Reply #402 on: September 03, 2013, 05:02:28 PM »
SparWeb.

Detail of  the actuator with flatbar slider. Free furling

kitestrings

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Re: Active Pitchcontrol
« Reply #403 on: September 05, 2013, 09:49:51 PM »
midwoud1,

Interesting possibilities.  If an actuator is employed I'm still wondering if it would be better to have it simply push the tail off the lower stop - possibly mounted to, or near, the stop with the piston pushing thru the mount to the tail-boom.  When retracted it has no contact, or effect on furling.

A window or skylight type of chain drive operator is another thought, but to get enough force, length and durability in an exterior location all complicate a seemingly simple scheme.

In any event thanks for your input, drawings and ideas.

mbouwer,

Quote
But we are wondering: why not thinking about active pitchcontrol?

I admire the work you and Frans have put together on this strategy, but honestly I'm not sure as it is the most reliable or fail-safe of all options.  Or perhaps said another way, it both solves and at the same time creates challenges to be considered.

Many of the earlier units (like the Dunlite) that we worked on had blade failure or worse problems over time.  Admittedly that may have biased my thinking.

On my own unit I also had a fixed piece hub plate available, and overall good long-term experience with 'tail-waggers'.  I've departed from the norm quite a bit on the alternator design.  I fear if I change too many features at once I won't know what to fix (or point to when it fails).

Best, ~kitestrings

mbouwer

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Re: Active Pitchcontrol
« Reply #404 on: September 09, 2013, 03:37:32 PM »
Windmillfriends,

Around us we see all the professional turbines equipped with electric driven yaw and pitch control.
That's why we think more and more selfbuilders want it in their creations.
On Ecologieforum   http://www.ecologieforum.eu/viewtopic.php?f=23&t=2566&start=240 ::)   we show our progress.

We think it's important to exchange designs and expieriences.

Regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #405 on: September 09, 2013, 05:13:37 PM »
Should be nice to make a replica of a professional windturbine
I have a pitchcontrolled windmill ,that gives every day energy, led lamps ,Coffee pot, Laptop, TV ,    fridge . The best people who understand it is on the forum.
Not yet a copy example,pitch and yaw control,maybe later. I'm sure there are mechanical technicians who can make it.
But the combination knowledge of , metal , woodcarving, electric ,electronics , software, polyester working  ,rigging  makes it a bit complex.
Never the less I see inovative ideas and projects on the forum. Very interesting.
And a place with a good average windspeed ,and permission for a tower.

 - Frans -

kitestrings

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Re: Active Pitchcontrol
« Reply #406 on: September 14, 2013, 05:07:45 PM »
Quote
On Ecologieforum

Rinus,

Thanks for sharing.  I love the tail vane on the photo at sunset (France).  Is there someway to translate?

I agree with Frans it is a wide mix of disciplines, talents and experiences that keep this interesting.

~ks

mbouwer

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Re: Active Pitchcontrol
« Reply #407 on: September 15, 2013, 03:17:22 PM »
Kitestrings,

Maybe you could use    http://www.vertalen.nu/zinnen/      to translate.

Regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #408 on: September 15, 2013, 04:31:01 PM »
Google translater .Some words are not correct , but good to read.
Tekst block translate by copy and paste .  Like Rinus his proposal.
-Frans -

kitestrings

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Re: Active Pitchcontrol
« Reply #409 on: September 15, 2013, 07:27:08 PM »
dank je vrienden

mbouwer

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Re: Active Pitchcontrol
« Reply #410 on: September 27, 2013, 04:39:31 PM »
Windmillfriends,

On the basis of Frans' design:
let's concentrate on improving hardware and software of the active pitch control.

Regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #411 on: October 01, 2013, 02:10:45 PM »
Electronic circuit for Active Pitchcontrol
High voltage input connected to one phase of the generator.
Polarity switch connected to the lineair actuator.
Propeller Rpm trigger , angle step time of feather and unfeather , Time between steps , can be adjusted by C - programmed software

- Frans -

mbouwer

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Re: Active Pitchcontrol
« Reply #412 on: October 02, 2013, 02:12:53 PM »
Frans,

Perhaps people with electronic expertise like to react.
But your scheme is hard to read.

regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #413 on: October 02, 2013, 05:07:56 PM »
Rinus right.
It is  composition of several images and it ended up at 302 Kb . To much so I minmized it .
I'll upload it in readable format.

  - Frans -

midwoud1

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Re: Active Pitchcontrol
« Reply #414 on: October 05, 2013, 10:01:48 AM »
Schematic circuit pitchcontrol actuator, detailled7661-1

mbouwer

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Re: Active Pitchcontrol
« Reply #415 on: October 10, 2013, 05:17:50 AM »
Frans,

Again a nice step in the development of small DIY mills.

Regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #416 on: October 10, 2013, 04:38:00 PM »
Rinus.

Can be an idea to make it in kit form.

  - Frans -

mbouwer

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Re: Active Pitchcontrol
« Reply #417 on: October 29, 2013, 03:56:19 PM »
Frans,

Is it possible to approximate give us an idea what all components in your scheme together cost?

Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #418 on: October 30, 2013, 03:00:23 PM »
 Electronic components , Trafo, Tacho chip , Arduino controller , Relays, Polarity switch, Resistors , Caps,
Estimate  Euro 50.     Know how to use the solder-iron. It's a perfect circuit for blade-pitch.

  - Frans -

mbouwer

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Re: Active Pitchcontrol
« Reply #419 on: December 28, 2013, 03:54:33 PM »
Frans,

We are now making a test setup so we can apply your electronic cicuit for Active Pitchcontrol.

midwoud1

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Re: Active Pitchcontrol
« Reply #420 on: December 30, 2013, 11:52:11 AM »
Test setup : Automatic Active blade pitchcontrol.
Constant speed system.
The electronic circuit is connected parallel with my consisting windgenerator.
The actuator is pulling back in decreasing windspeed.
In high wind above 330 propeller Rpm it's going the other way.
Controlled by an Aruino MC. And software programma.
- Frans -
http://www.youtube.com/watch?v=xGMj90mXcwI

fabricator

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Re: Active Pitchcontrol
« Reply #421 on: December 30, 2013, 04:07:43 PM »
Frans, you should seriously think about putting all that in one package and selling them or licensing somebody to build and sell them, maybe a complete package with the hub and blade grips and the whole ball of wax.
I'd but one to play with for someone like me that does not have a background in electronics it might as well all be in Latin. ;)
I aint skeerd of nuthin.......Holy Crap! What was that!!!!!
11 Miles east of Lake Michigan, Ottawa County, Robinson township, (home of the defacto residential wind ban) Michigan, USA.

midwoud1

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Re: Active Pitchcontrol
« Reply #422 on: December 30, 2013, 05:15:30 PM »
Hi Fabricator.  If there is a demand for it I can make it.I have the gear with UV light and acid bath.This circuit is made on Veroboard and that's not proffesional.Spaghetti wiring on the backside. Should make an etched PCB. Saves a lot of time. This circuit is for mbouwer. He is making  his own mechanical design based on the 3 meter prop diam Piggott.
Menelaos is also making one. For the time now it is experimental .

We wish you and all Fieldliners a Happy New Year.

 - Frans -


fabricator

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Re: Active Pitchcontrol
« Reply #423 on: December 30, 2013, 05:37:55 PM »
Cool, it will be good to have several working models to get all the bugs worked out. Happy New Years to all you fieldliners across the pond too. :D
I aint skeerd of nuthin.......Holy Crap! What was that!!!!!
11 Miles east of Lake Michigan, Ottawa County, Robinson township, (home of the defacto residential wind ban) Michigan, USA.

mbouwer

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Re: Active Pitchcontrol
« Reply #424 on: December 31, 2013, 03:01:08 PM »
Fabricator, you are right.
We're working on it.

fabricator

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Re: Active Pitchcontrol
« Reply #425 on: December 31, 2013, 04:02:16 PM »
Good luck and happy new year.
I aint skeerd of nuthin.......Holy Crap! What was that!!!!!
11 Miles east of Lake Michigan, Ottawa County, Robinson township, (home of the defacto residential wind ban) Michigan, USA.

midwoud1

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Re: Active Pitchcontrol
« Reply #426 on: January 01, 2014, 08:33:41 AM »
Control board functions

midwoud1

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Re: Active Pitchcontrol
« Reply #427 on: April 19, 2014, 03:59:01 PM »
Wincharger modified blade pitch DIY


 With implementation of the Rural Electrification Act in 1936, however, the wind-powered battery charger's days were numbered. Even the most remote farms had access to electricity by the mid-1950s, ending the need for the wind generator and a free energy source. Many utility companies refused to provide power to farms with working wind generators, and more than a few Winchargers were deliberately disabled by high-powered rifles.
  - F -

Read more: http://www.farmcollector.com/equipment/charged-by-the-wind.aspx#ixzz2zMcxQZ3O


   https://www.google.nl/search?q=wincharger&hl=en&qscrl=1&rlz=1T4MERD_enNL505NL505&tbm=isch&tbo=u&source=univ&sa=X&ei=KUZSU5HPLY6sOvzWgUA&sqi=2&ved=0CCgQsAQ&biw=1041&bih=489#facrc=_&imgdii=_&imgrc=1EXxr4ri1Uh7QM%253A%3Bxx6_jTySe9I-0M%3Bhttp%253A%252F%252Fwww.antiqueradio.com%252Fimages%252FMar02-Russell-Wind-Fig3.jpg%3Bhttp%253A%252F%252Fwww.antiqueradio.com%252FMar02_Russell_Windradio.html%3B400%3B530



ChrisOlson

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Re: Active Pitchcontrol
« Reply #428 on: April 19, 2014, 11:38:28 PM »
I got a 6V Wincharger Airline Deluxe but it needs a new blade.  Every farm back in the 1920's - 1930's had one of these too:



That one is a 32V Delco Light Plant.  But they also made them in 6V.  There was all sorts of 32VDC appliances back then, including light bulbs, clothes washing machines, sewing machines, clothes irons, and even shop tools like drills and saws.

The REA was basically a government subsidy for electric companies to build distribution lines to rural areas.

My dad was 16 years old when they came to my grandpa's farm to run the powerlines there.  My grandpa had bought the Wincharger in 1931 when my dad was 10, and he refused the new electric service.  That Wincharger ran on our home farm until 1968 when the blade broke on it.  I have the Wincharger and the Zenith tube radio that came with it, and the radio still works.  My grandpa paid $10 for it.