Category Archives: ferrite magnets

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

My first ferrite magnet project

Back in the 1980s I had spent ten years building wind turbines that were based on dynamos (USA=’generators’) out of military jeeps.  They were cheap and well made, but they had serious drawbacks.  The magnetism required to make them work … Continue reading

Posted in construction, ferrite magnets, my own projects, wind systems tutorial | Leave a comment

“Yet another axial” down under

Another ferrite magnet alternator project.  This one is on the Backshed discussion board hosted by Glenn ‘Gizmo’. The stator is supported at the centre, which is a bit more compact but the supporting bolts between magnet rotors restrict the overall … Continue reading

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

Single phase, chain driven alternator project with ferrite magnets

Chris Olsen has been busy experimenting and reporting his findings on the Fieldlines board This single phase stator for a ten magnet dual-rotor turbine is his answer to the rising cost of neodymium magnets.  As always Chris is pushing against … Continue reading

Posted in construction, ferrite magnets, People | 4 Comments

Pedro’s microwave ferrite magnet turbine

Pedro Bernardo has been sending me photos of his latest project using ferrite magnets from a microwave oven.  Pedro lives in a village close to a small city called Marinha Grande, Portugal.  (Since I first posted this message he has … Continue reading

Posted in construction, ferrite magnets, People | 43 Comments