Search Results for: kragten

6 watt turbine design from Adriaan Kragten

Posted on 02/06/2013 by hugh

Kragten Design VIRYA-1.04   Diameter                                                                           D = 1.04 m Number of blades                                                             B = 3 Design tip speed ratio                                                      ld = 3.5 Mass                                                                                 including 1 m tower pipe  m = 4.85 kg Starting wind speed                                                          Vstart = 2.6 m/s Survival … Continue reading →

Posted in Adriaan Kragten, Books, construction, People | 1 Comment

Free Document downloads from Kragten Design

Posted on 12/11/2012 by hugh

Adriann Kragten has made available a number of his reports on small wind turbines for free download Here at www.bidnetwork.org/en/member/adriaankragten Adriaan writes very thorough reports with plenty of equations and clear drawings.  The reports cover both, electricity producing wind generators … Continue reading →

Posted in Adriaan Kragten, Books, construction, developing world, People, wind systems tutorial | 1 Comment

more from Adriaan

Posted on 14/10/2019 by hugh

Dear Hugh Recently I have written two new reports about small PM-generators which make use of the housing of an asynchronous motor frame size 80 and four neodymium magnets size 80 * 20 * 10 mm. Report KD 681 describes … Continue reading →

Posted in Adriaan Kragten, construction | 1 Comment

More free designs at kdwindturbines.nl

Posted on 03/05/2017 by hugh

Adriaan Kragten writes: Dear Hugh Recently I have developed two new small VIRYA wind turbines with axial flux generators, the VIRYA-1.25AF and the VIRYA-1.81. The design reports and the drawings can be copied for free from my website: www.kdwindturbines.nl.  A folder … Continue reading →

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Possible student research project

Posted on 18/01/2016 by hugh

Adriaan Kragten has been kind enough to notify me of his latest design work which is documented in his free pdf reports available for download here.  Most of his wind turbines have been based on converting induction motors to pm alternators … Continue reading →

Posted in Adriaan Kragten, construction, People, products/technical | 1 Comment

free KD-reports

Posted on 18/11/2015 by hugh

Adriaan Kragten writes: As I am retired for some years now, I no longer need income from selling my KD-reports about small wind turbines. So I have decided that from now on all my public KD-reports can be copied for … Continue reading →

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3 new KD-reports

Posted on 21/12/2014 by hugh

[note: I have edited my remarks in response to some corrections sent by email] Adriaan has notified me of the following free reports that he has published (see below the diagram).  The axial flux design has a single magnet disk, … Continue reading →

Posted in Adriaan Kragten, Books, construction, People | 1 Comment

Ideas for a 34 pole alternator design by Adriaan

Posted on 14/06/2014 by hugh

“Dear Hugh and others During the last weeks I have designed a new water pumping windmill, the VIRYA-3S. This windmill makes use of a direct drive 34-pole PM-generator and is primary meant to be coupled to the 3-phase asynchronous motor … Continue reading →

Posted in construction, People | 3 Comments