Category Archives: Adriaan Kragten

more from Adriaan

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

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Bench testing of Kragten axial alternator

Adriaan Kragten has tested one of his small alternator designs and published results showing it is compatible with a 1.02m diameter rotor for a low power wind turbine. A new chapter 6, “Generator measurements”, has been added to public report … Continue reading

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Alternative winding for K645 stator

Adriaan writes: “I have added a new chapter 6 to report KD 645 in which a 10-pole PM-generator is described using the housing and shaft of an asynchronous motor frame size 80. This generator has a stator with no iron … Continue reading

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Another document by Adriaan Kragten

Adriaan continues to add to the impressive list of reports that are free to download from his web site. These provide a valuable resource to students or designers working on small wind projects. My newest report KD 672 can be … Continue reading

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Kragten 2-bladed 1.8W windmill with no iron in the coils

Here is another design document available free from Adriann Kragten.  He wrote to me: “Recently I have written report KD 664 which can be copied for free from my website: www.kdwindturbines.nl at the menu KD-reports. The title of this report … Continue reading

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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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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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More free designs at kdwindturbines.nl

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

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

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free KD-reports

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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