Wind Turbine Concept - HMS Windy One

cults3d

Hi, This is my concept for a wind turbine that I've been inspired by a link to create on my own. My original plan was to publish this design when I finished it almost but there's a challenge now, so I'm adding the design to Cults. My basic ideas were: 1. Build all parts on a 200x200x180mm frame. 2. Use a Nema 17 Motor (spare of my printer) as Generator. Another motor should be possible. 3. Storm safety. 4. Basic design should have gearing. 5. Not too many different bolt sizes. 6. Less overall / single print times. 7. Adjustable on different locations -> wind speed. 8. Strong enough design. 9. Load a 12V battery. I tried the turbine from the link above but it didn't work for me well. My problem was that I have less wind speed, and I think not more than 3m/s (I can't say how much clearly, I haven't an anemometer...). So I decided to generate my own propeller by 2 arguments: too less wind speed and the print time for 1 propeller blade (12h+). You can see the version of this on the last picture. (3 blades with the green generator house). But in the end, it still doesn't generate enough to load a 12V battery. I made a voltage doubler after the stepper motor: http://www.reuk.co.uk/Stepper-Motor-Voltage-Doubler-Circuit.htm At this point, I said: I create my own complete design. (this was approx. before 1 month). My basic design is almost finished now, and I need to do some details. Now, I need to print and test. But this will take time - about 2 weeks up to now. I tried to make it so much expandable and adjustable as possible. To my design now: 1. 4 blades – can be extended up to 12 (like western mill) or maybe 2 bigger ones but this is not considered by me. Angle of attack can be adjusted. 2. Adjustable gear: standard gear ratio of 1:1,7 up to 3 times. I will try with 3 times of this (I'm not an expert with gears, so please correct me when I write something wrong). 3. Main blade is stronger now. 4. Support for the main blade is included. 5. Propeller and cone for it are also included. The propeller is designed to mount on a M8 threaded rod. I hope I can finish it in time because my printer is broken over the weekend. Basic instructions added – 14.07.2015 Video added. Printing is ongoing, hopefully in time: https://youtu.be/Uc-YiuEondI End – 30.07.2015 Update: It was a good and bad day today. Good: I have assembled a lot. Bad: no wind for test. Some improvements discovered. Hopefully, I can print it tomorrow. New picture uploaded with the most stuff assembled. I will try to finish the storm regulation tomorrow. End – 31.07.2015 Update 1: STL files uploaded in the zip file (includes file structure for better understanding). The STL files which I have uploaded till now, are the same as in the zip file. New set of PDF drawings uploaded with the latest model. DWG file of my gearing. Ende – 02.08.2015 Update 2: Video uploaded, Instructions uploaded Description modifications End – 02.08.2015