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 1000 watt output
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nice email received:
From: Mike Allen
Subject: Re: A Wind Turbine Recipe Book
Date: 12 April 2013 10:53:18 BST
To: jytteI recieved the book yesterday and when it arrived I thought 'this isn't worth £12'.
But how wrong I was once I'd opened the envelope and settled down to read the contents with a cup of coffee. 3 hours later the coffee was stone cold and I was still reading the book.
Loads of info to be getting on with.
I'll email Hugh when my terbine is up and running with some pics.
Thanks a lot.
Michael.
Buna ziua.Sunt intersat de constructia unei eoliane cu diametrul eliciei de 3m cu 8 lame cu magneti de ferita .Puterea generatorului sa fie de maxim 1,5 kw ,eventual cu bobinele cu miez de fier. Problema cea mai mare este ca nu o pot ridica mai mult de 8 m iar condiitiile de vint si obstacolele din jur nu imi asigura decit o turatie in cea mai mare parte a timpuli decit 20 de ture /minut. Ma intrseaza cam cit trebue sa fie diametrul generatorului ,numarul de magneti si cam ce dimensiuni. Va multumesc
hi Viorel, You will not get 1.5kW if the wind is so weak. If the wind is strong enough to produce useful power then it is also strong enough to spin the blades faster than that. Iron cores are not a good idea if the wind is very light because they will take some of the power. Try to reduce the friction and other losses. Building a good alternator cannot give you more power than the wind can produce though. In the end it’s frustrating to try to generate wind energy on short towers among trees and buildings.
Would like to know where in South Africa this turbine will be sited. Also what timber he used for the blades. Thanks.
Considering that his using ferrite magnets (I know how expensive Neo magnets are) can his stator and blade diameter specifications be able to produce 1kW ? Am also interested to know where exactly in south Africa he is building it.