Author Topic: Active Pitchcontrol  (Read 162617 times)

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midwoud1

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Re: Active Pitchcontrol
« Reply #432 on: August 03, 2014, 04:42:53 AM »
Active pitchcontrolled blades
https://www.youtube.com/watch?v=fI5-DxQx7x8&feature=youtu.be

Works like the big windmills .  Reliable 3 years now.

richp0169

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Re: Active Pitchcontrol
« Reply #433 on: August 26, 2014, 01:18:51 PM »
This is a fantastic design, the options for control are endless with the right circuitry. 

Kudos.

mbouwer

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Re: Active Pitchcontrol
« Reply #434 on: August 28, 2014, 02:04:38 PM »
Can we say active pitchcontrol is booming?

midwoud1

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Re: Active Pitchcontrol
« Reply #435 on: August 29, 2014, 12:58:52 AM »
A lot of progress in the development of active pitchcontrol.
Variable pitch propellers and micro-controllers.
You can create an invasion with a 1000 drone squadron.
The technical application we use to control our windmills is simple.
Can be booming.
   https://www.youtube.com/watch?v=NRL_1ozDQCA&feature=youtu.be

mbouwer

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Re: Active Pitchcontrol
« Reply #436 on: September 01, 2014, 01:50:53 PM »
We would like to find out if implementing the drone pitchcontrol on our windmills is possible.

Regards Rinus

midwoud1

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Re: Active Pitchcontrol
« Reply #437 on: September 02, 2014, 12:20:20 PM »
There are RC servos that can do the job.
Torque : 12,8 kg / cm  6volt . metal gear and ballbearings, compact dims.

lancewlksn343

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Re: Active Pitchcontrol
« Reply #438 on: September 26, 2014, 06:26:01 AM »
Hi All.
I am living in Northwest Holland . Average wind 5-5.5 m/sec . Building windgenerators several years .
Have some experience with making blades ( fixed- and passive pitch and active pitchcontrol )
I see that some of you ( Menelaos ) and other friends on Fieldlines are thinking about pitchcontrolled blades .
For the time of 3 months I have running a DIY active pitch controlled windgenerator.
Must say I am very content about it .
It is controlled by an actuator wich can be switched automatic and manual.
Blade angle from zero to 90 degrees in 8 seconds.
Propeller diam. 290 cm .
Controllable max speed 330 rpm . (adjustable)
Feathering and electrical brake in case of storm.
Generator disc type ( Hugh Piggott design ) 9 coils and 2x 12 neo magnets. 24 volt.

I see some advantages : Never overspeed , No overheat stator, No dumpload , No overload of batteries , controllable voltage and amps for inverters for batteries and grid tied ones. No material stress. With extra sensors No voltage controller.

http://www.youtube.com/user/midwoud1?gl=NL&hl=nl#p/a/u/1/csr2BLBQ6rc

and other uploads Midwoud1 on YouTube

Regards Frans.

(Attachment Link)
(Attachment Link)
  Wow! this truly is a labor of love.  Midwoud1, what can you not do?  and to the people pitching in, you guys are awesome.  Thank you for sharing this thread.  This is an inspiration to me.  Will be looking forward to following this thread.

mbouwer

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Re: Active Pitchcontrol
« Reply #439 on: September 26, 2014, 02:47:32 PM »
and we are sure the best is yet to come

Lancewlksn343,
What are your plans to go build?

Regards Rinus


midwoud1

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Re: Active Pitchcontrol
« Reply #440 on: September 26, 2014, 03:13:17 PM »
Hi Lance.
Welcome to the forum.
Please some info about what you intend to do .
Battery charging or grid tie ?
Start with a basic design , or active bladepitch ?

Regards  Frans   ( midwoud1 )

midwoud1

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Re: Active Pitchcontrol
« Reply #441 on: December 24, 2014, 02:03:07 PM »
Merry Christmas to all people on the forum.
          Frans & Teresa

kitestrings

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Re: Active Pitchcontrol
« Reply #442 on: December 24, 2014, 03:36:35 PM »
Happy Holidays Frans & family.  ~ks

mbouwer

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Re: Active Pitchcontrol
« Reply #443 on: May 06, 2015, 11:04:39 AM »
Windmillfriends,

Trying to make an elektically driven yaw bearing.

Regards Rinus

mbouwer

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Re: Active Pitchcontrol
« Reply #444 on: May 06, 2015, 02:26:50 PM »
Just found a discarded bearing of which we can use the balls

mbouwer

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Re: Active Pitchcontrol
« Reply #445 on: May 07, 2015, 03:09:10 AM »
We want to use a simple worm gear drive.
Here is the welded wormweel.

kitestrings

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Re: Active Pitchcontrol
« Reply #446 on: May 07, 2015, 07:00:27 AM »
Rinus,

Is the goal to optimize tracking of the wind, or to provide a means of turning the turbine out of the wind for regulation?  And, if the latter, are you thinking this would be in lieu of variable pitch blades, or in addition to it?  ~ks

mbouwer

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Re: Active Pitchcontrol
« Reply #447 on: May 07, 2015, 07:51:33 AM »
Kitestrings,

We are searching for a simple implementation of a low weight, steered yaw bearing.
And we always want to be able to master the turbine so we think we need pitch control.

Regards Rinus



mbouwer

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Re: Active Pitchcontrol
« Reply #448 on: May 08, 2015, 06:33:28 AM »
After this ballbearing we would also like to make a slide bearing implementation.

mbouwer

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Re: Active Pitchcontrol
« Reply #449 on: May 09, 2015, 06:43:37 AM »
We have made the base ring for the slide yawbearing. Worm wheel is part of the construction now.

mbouwer

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Re: Active Pitchcontrol
« Reply #450 on: May 11, 2015, 02:55:57 PM »
The slide ring we again made in lattice to reduce the weight and have a good stiffness.


mbouwer

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Re: Active Pitchcontrol
« Reply #451 on: May 13, 2015, 06:38:47 AM »
The slide yaw bearing completed with locking ring.

mbouwer

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Re: Active Pitchcontrol
« Reply #452 on: May 15, 2015, 03:15:15 AM »
A new setup.

mbouwer

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Re: Active Pitchcontrol
« Reply #453 on: May 19, 2015, 05:00:28 AM »
The corresponding pivot.

mbouwer

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Re: Active Pitchcontrol
« Reply #454 on: May 20, 2015, 03:16:14 PM »
On the mast it looks like this.

SparWeb

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Re: Active Pitchcontrol
« Reply #455 on: May 21, 2015, 11:35:01 AM »
Rinus,
That is some impressive heavy metal.
I am looking forward to the result.
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, regulated by Xantrex C40, DIY 8ft diameter wind turbine, regulated by Tri-Star TS60, 800AH x 24V AGM Battery, Xantrex SW4024

midwoud1

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Re: Active Pitchcontrol
« Reply #456 on: May 21, 2015, 12:11:55 PM »
Windvane yaw control.
Reed contacts , Polarity forward - Reverse relay , Windshield wiper motor.

Rgds  Fbm.


kitestrings

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Re: Active Pitchcontrol
« Reply #457 on: May 23, 2015, 09:55:37 AM »
Very cool.  What is a the size of this?  It's hard to tell from the pictures.  Regards, ~ks

mbouwer

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Re: Active Pitchcontrol
« Reply #458 on: May 24, 2015, 01:10:56 AM »
The diameter of the top of the mast is about 100 mm ( 4 inches )