Category Archives: ferrite magnets

photos of workshop course in Denmark May 2013

Date: 20-24th May 2013 Organised by and located at the  Nordic Folkecenter for Renewable Energy, Kammersgaardsvej 16,  Sdr. Ydby, DK-7760 Hurup Thy, Denmark Participants: 15  people Project: 3 metre 48-V machine with ferrite magnets (3F design)

Posted in construction, courses, ferrite magnets | 2 Comments

photos of workshop course Scoraig April 2013

date: 20-27 APRIL Location: Scoraig 4 participants built a 2 metre ferrite turbine (2F) for 24-v battery charging.  Also balanced and fitted some 3 metre blades to last year’s 3 metre ferrite turbine. Photo sequence is a bit random sorry. … Continue reading

Posted in construction, courses, ferrite magnets, Scoraig | 5 Comments

Video of Scoraig Workshop 2012

Jonathan Schreiber sent me this video he made about when he came to my workshop last year.  Somehow he also manages to be in the video too 🙂 Jonathan also has a blog here. I will be teaching at more … Continue reading

Posted in construction, courses, ferrite magnets, People, Video links | 6 Comments

Workshop in Leitrim with Eirbyte

Here are some photos and a video of the workshop.  We built a 4200 recipe machine with 48-V battery charging output and a new design of 2 metre, 24-V turbine with ferrite magnets.  

Posted in construction, courses, ferrite magnets, Video links | 9 Comments

Willie Schmidt

Willie Schmidt is building a 3 metre ferrite turbine in South Africa 12 ferrite magnets 75 x 50 mm (3 x 2 inches) 440 mm rotor diameter disk 250 turns (2 x 0.8mm dia wire) for a 36 volt battery … Continue reading

Posted in construction, ferrite magnets, People | 6 Comments

Clearer drawing of the 10-pole 12 coil design

Coils wound in pairs using 2-in-hand 1.6mm diameter wire.  Each coil has 37 turns in the one we did for the workshop. Coils in each pair are roughly ‘in phase’ if one is flipped over as shown.  (Actually there is … Continue reading

Posted in construction, ferrite magnets, my own projects | 163 Comments

Photos of the Scoraig wind turbine building workshop

Participants: 6 (Robert, Jonathan, Kostas, Benji, Yanti and Kern) Dates: 5-12 May 2012  Location: Scoraig. Project: 3 metre machine using ferrite/ceramic magnets at 24VDC Poles: 10, (3 magnet blocks 50 x 50 x 20 per pole) Coils: 12 (37 turns … Continue reading

Posted in construction, courses, ferrite magnets, my own projects, Scoraig | 17 Comments

Chain driven turbine with Classic controller

Chris Olsen’s latest project involves a Classic 150 controller connected to an alternator that is gear driven from 3.2m diameter blades.  The gear ratio is 1:2.5 up ratio. It’s a single-stator with 3-phase star connected windings this time.  The ferrite … Continue reading

Posted in construction, ferrite magnets | 5 Comments

Bruno’s blades

I got this email from Bruno with some lovely photos of his blades made from birch plywood.  I am not sure that plywood is the best thing to use for blades (where the stresses are longitudinal) but it seems to … Continue reading

Posted in construction, ferrite magnets, People | Leave a comment

Price of Neodymium finally levels off

There’s an interesting article here about the situation with global supply of neodymium magnets.  Price of Neodymium (Nd) has increased roughly tenfold in two years, but shows signs of leveling in recent weeks. Thanks to Markus Hugentobler for sending me … Continue reading

Posted in construction, developing world, ferrite magnets | 3 Comments