So I have a design for a wind turbine to use in my garden. It is a fairly average darrieus wind turbine design. The wind speed in my garden maxes at about 30mph and constantly changes direction.

My problem is that I have no clue how to model my wind turbine and get any sort of rough calculation for a power output. I have found a generator on eBay which I can only assume to be suitable although I have no clue how to calculate what RPM would be needed to produce 30w as the generator claims. The description says 900RPM but that seems a lot to me. Nonetheless, I don't have any experience and this is only intended as a pre-university project so it doesn't have to be incredible.

If anyone has any insight as to a good place to look for information on VAWT modelling then I would be very grateful. Any help is appreciated though.

Thanks, Alex.

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    I'm not sure I understand how people here could be expected to provide better data on your generator than the generator's own datasheet. If that datasheet says 900RPM, then that's your answer. – EnergyNumbers Aug 29 '17 at 13:14
  • There are many sites about making your own wind turbines available on the internet with examples of what materials to use and the theory involved. Here is just one : – Solar Mike Aug 29 '17 at 14:09
  • Thanks for the help, although it's more predicting the power output of the turbine than actually building it as ive struggled to understand any information about VAWTs and equations that go with them – Alex Banton Aug 30 '17 at 11:18

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