Author Archives: hugh

About hugh

I live off-grid in NW Scotland and have spent my life playing with wind turbines. I also love small hydros. Hands on renewable energy is my thing and I like to learn and to share my experiences.

F series wind turbine designs

My wind turbine designs in recent years have used ferrite magnets and the naming system is based on “F” for ferrite (or ceramic) magnets, preceded by number denoting the diameter in metres. Hence the 2F is my 2012 design ferrite … Continue reading

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Jon Leary’s performance study of Scoraig wind turbines published

The long awaited final version of Jon’s study based on data he collected here in 2012-2014 has finally been published and is free to read or download here courtesy of Wind Engineering. An important conclusion is the the table in … Continue reading

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PowerSpout price increase

PowerSpout plan to increase prices of their hydro turbines and associated gear by approximately 15% on 1st April. This will be the first rise in several years. At present exchange rates, a turbine costs approximately £1190 with an additional £150 … Continue reading

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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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Greg Gibbes hydro turbines using axial flux alternators

Greg sent me some photos of the hydros he is building using axial flux alternators to provide direct single-phase AC for sites in Papua, Indonesia. Here is some information. Greg’s email is greg.gibbes@gmail.com These are single phase units, 240VAC, 50Hz. … 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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Arduino-based controller project for the recipe 1800 turbine

Philippe wrote to me with this link: Hi, I have my own Piggott wind turbine for 2 years, a 180cm 350W. I had some trouble about the way a regulator adapts energy to a battery charger or a injector. So … Continue reading

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Workshop in Enniskeen Co Cork

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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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Wind turbine building in the UK in October

Jonathan Schreiber is coming to the UK in October to teach a workshop based on my 2F design.

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