Timeline for Making a DIY wind generator for kid's project. How can we improve it?
Current License: CC BY-SA 4.0
22 events
| when toggle format | what | by | license | comment | |
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| Nov 29, 2022 at 20:38 | answer | added | pete jones | timeline score: 0 | |
| Jul 11, 2022 at 22:35 | comment | added | PStechPaul | I found a wind power calculator that might help determine how close your design is to the theoretical maximum. The main considerations are wind speed and fan area. Power is proportional to cube of wind speed, and is in the order of 100 W/m^2 at 10 MPH. windpower.generatorguide.net/wind-speed-power.html | |
| Jul 11, 2022 at 21:24 | comment | added | Craig | I have just ordered a mppt. I tried using 12 magnets today but get nothing so design must be cancelling flux they cost me £50 this is adding up fast for a little project | |
| Jul 11, 2022 at 21:20 | comment | added | Craig | But that’s only 3.24 watts isn’t it? Our aim was 50w-100w | |
| Jul 11, 2022 at 13:33 | comment | added | DKNguyen | "We get 12 volts but only 270mA." I think that's pretty good from the results I've seen from other home setups. | |
| Jul 11, 2022 at 13:29 | answer | added | Alphy13 | timeline score: 2 | |
| Jul 11, 2022 at 11:50 | history | edited | JRE | CC BY-SA 4.0 |
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| Jul 11, 2022 at 11:43 | history | edited | Craig | CC BY-SA 4.0 |
add photo
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| Jul 10, 2022 at 10:27 | review | Close votes | |||
| Jul 16, 2022 at 3:02 | |||||
| Jul 10, 2022 at 9:19 | comment | added | Solar Mike | May get some ideas : thumbwind.com/2020/07/21/diy-renewable-energy-projects | |
| Jul 10, 2022 at 3:07 | comment | added | Kyle B | The easiest way to demonstrate a wind generator is to get a window fan (nothing fancy with digital LED's... cheapest one you can find). Install it, wait for the wind to start blowing and causing it to turn, you'll be able to measure an AC voltage across the power cord blades. | |
| Jul 10, 2022 at 2:44 | comment | added | PStechPaul | Here is a better explanation for wind power, and a project you can build: instructables.com/… | |
| Jul 10, 2022 at 2:41 | comment | added | PStechPaul | To get maximum power from a wind generator or photovoltaic array, you need to use a converter that adjusts its impedance for optimum voltage and current. This is known as MPPT. You can get an idea of the principle by reading the open circuit voltage and the short circuit current (or where the windmill generates maximum current). Somewhere between these extremes will be the maximum power point. It's also where source and load impedance are matched. renewablewise.com/mppt-charge-controller | |
| Jul 10, 2022 at 0:45 | comment | added | StainlessSteelRat | Quality of magnets. Coil size relative to magnets. More turns. Finer wire. So many things can be poorly done. Bigger wind mill. Put your boy on the roof (maybe not the best idea). Pictures with dimensions will help. | |
| Jul 10, 2022 at 0:42 | comment | added | Jens | Can you show the magnetic flux path? Most improvements are hidden there | |
| Jul 9, 2022 at 23:50 | comment | added | jonk | Craig, when worried about not getting a lot from your efforts, the very first thing I'd do is work through the required theories involved in making predictions. (Or buy a professional product I could use to calibrate results.) Only then can you know if you are getting close, or not, to what can be done. Otherwise, you just can't know. Ungeared, when you are getting 300 RPM what is the wind speed at that time? What's the blade diameter into the wind? Do you have a specific pitch? Or is it variable? Have you looked at the old NACA (pre-NASA) tables for wind blades? | |
| Jul 9, 2022 at 23:31 | history | edited | JRE | CC BY-SA 4.0 |
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| Jul 9, 2022 at 23:17 | comment | added | TimWescott | Without being able to see what you're doing it's hard to say. Can you edit your question with some pictures (you can drag & drop pictures into the question), and be sure to include dimensions. | |
| Jul 9, 2022 at 22:56 | history | edited | Craig | CC BY-SA 4.0 |
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| Jul 9, 2022 at 22:51 | history | edited | Craig | CC BY-SA 4.0 |
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| S Jul 9, 2022 at 22:43 | review | First questions | |||
| Jul 10, 2022 at 0:42 | |||||
| S Jul 9, 2022 at 22:43 | history | asked | Craig | CC BY-SA 4.0 |