Category Archives: Adriaan Kragten

28-pole PM-generator design by Kragten (plus added rectifier papers)

Posted on 24/12/2021 by hugh

Adriaan Kragten writes: Report KD 730 can be copied for free from my website: www.kdwindturbines.nl at the menu KD reports. The title of this report is: “Ideas about a 28-pole, 3-phase permanent magnet generator using the housing and winding of … Continue reading →

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Kragten update again

Posted on 16/06/2021 by hugh

Dear Hugh I have written a new report KD 723 which can be copied for free from my website: www.kdwindturbines.nl at the menu KD reports. The title of this report is: “Ideas about an 18-pole, 2-phase permanent magnet generator using the housing … Continue reading →

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New Kragten paper on asynchronous motor conversion

Posted on 26/05/2021 by hugh

“Report KD 718 can be copied for free from my website: www.kdwindturbines.nl at the men KD-reports. The title of this report is: “Ideas about a 16-pole, 3-phase permanent magnet generator using the housing and winding of a 4-pole asynchronous motor frame … Continue reading →

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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 →

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Bench testing of Kragten axial alternator

Posted on 15/08/2019 by hugh

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

Posted on 16/06/2019 by hugh

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

Posted on 08/05/2019 by hugh

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

Posted on 08/11/2018 by hugh

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

Posted on 05/07/2018 by hugh

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

Posted on 25/11/2017 by hugh

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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