June, 2014 - Purpose of this Instructable
This Instructable explains the processes involved in designing, building and testing ideas for the creation of an effective VAWT,. It is intended to reflect the learning process that many will go through, and the trial and error necessary to achieve an optimum set up for the rotor and generator combination you have chosen.
In the early stages therefore it will NOT show a design which you can make yourself. Once the project is complete, I will create additional pages showing the completed project and you can then be confident that, if you follow the design and items used, IT WILL WORK. Please remember that you will still need to do similar testing of your set up to ensure the correct balance between YOUR rotor and generator combination.
I am not an expert on VAWT aerodynamics or electrics, but was fortunate enough to strike up a conversation, whilst buying a charge controller, from Dave Styles of Karasouli (Karasouli website) . Dave is an Electrical Engineer, and both he and his company have been involved with a number of Wind Turbine projects and have created effective controllers and other equipment that get the best out of any wind project.
Without Dave's help this project would have stalled before I even had an effective rotor, but with Dave and Karasouli's help, I will have a completed project that does everything I wanted and some..
Objectives of the Project.
I own a 600litre Reef tank system (see image above) that is a living Memorial to Nic, our daughter, that we lost a couple of years ago.
Over time, I have converted everything on the system to 12V to reduce the electricity consumption. I now have a system that draws less than 30A.when everything is on. The objective is to produce a Wind Turbine that is capable of producing a steady 3-4amps in prevailing average wind speeds, with a maximum output in the region of 10amps at a rotor speed of around 150rpm.
Essential elements in the design
To achieve the output figures listed above.
Living in a built up area the rotor had to be quiet, cope with turbulent winds, and produce current in the prevailing average wind speeds of 12-14mph.
The control system had to be capable of protecting the battery bank, converting back to 240V, and switching from turbine to mains electricity automatically.