Category Archives: construction

More free design documents from Adriaan Kragten

Adriaan writes Dear Hugh I am 71 years old now and in December 2017 I have ended the commercial activities for my engineering office Kragten Design. But I am still active and my website: www.kdwindturbines.nl will be maintained as long … Continue reading

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Open source design tool for alternators

I got this from Kostas today: OpenAFPM: An open source software tool for modelling and designing axial flux permanent magnet generators in wind electric systems Update THERE WILL BE A WEBINAR ON 19th April where you can learn how to … Continue reading

Posted in construction, Notices, People | 3 Comments

Handy Village Homebrew Workshop, with Dan Bartmann

The Handy Village Institute is preparing for their third Homebrew Wind Turbine Workshop, with Dan Bartmann as guest instructor, March 19-24, 2018, near Saxapahaw. Details and registration information: handyvillage.com. FlyerEddy2018Turbine

Posted in construction, courses, Notices | 4 Comments

Another design proposal from Adriaan Kragten

Adriaan tells me: “Recently I have written report KD 645 about the design of a new type 10-pole radial flux PM-generator with no iron in the coils and a simple 1-layer winding. This report can be copied for free from … Continue reading

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A new alternator for my little AWP windmill

I don’t usually write much at all about the stuff I get up to, but here is a story of my smaller wind turbine having an upgrade last month when I replaced the alternator.  I was helped by my friend … Continue reading

Posted in construction, ferrite magnets, my own projects, Scoraig | 6 Comments

16 foot homebrew in Wyoming

“Hello again. We are in wyoming, only 30 miles from proposed LARGEST wind farm in WORLD( cherry choke project ) best wind zone in USA here.  3000 new GIANT wind generators will be installed here in  next  year.  7200 ft … Continue reading

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Free workshop in Austria

It probably helps to speak some German.  free participation in a do-It-yourself Windmill Workshop! Take advantage of the special chance!   the workshop will be soon, from 7. To 11. August in the sun park st. Pölten in the framework of the eschmiede summer … Continue reading

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Axial flux alternators overheating

I got this question by email and I thought it worth answering it publicly. Hugh, It seems home made axial flux pma’s are prone to overheating at fairly low speeds compared to conventional gas powered generators that run at 1,800 … Continue reading

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Grid-tied 2F windmill self-construction project with Jonathan in Austria

Small wind turbine Do-It-Yourself Workshop incl. Installation Windmill type:  2F 16p piggott (2m rotor, grid feeding) Location:  FH Technikum / Energieforschungspark Lichtenegg Participants:  15 people Country:  Austria Date:  Spring 2017 The machine is currently under test alongside some larger ones and doing well. For an ebook with … Continue reading

Posted in construction, courses, ferrite magnets | 1 Comment

Arduino based PWM diversion control system

I am a bit fanatical about using surplus energy from wind and solar systems.  I just had an article published in Home Power magazine about this subject. I like using Tristar controllers in diversion mode and then triggering more usable … Continue reading

Posted in construction, Diversion load control | 4 Comments