Hello,
I have been lurking here for a while and have picked up lots of useful information. I have ordered an Ametek 30 off of eBay and it will be my first wind turbine. I was really interested in building a Hugh Pigget version. Then I got the books whewwww not for the first one, it's been awhile since I have felt that overwhelmed.
I am new to wind but not solar, I already have a grid tied PV-solar system up and running. I really do not have the space or need to mount any kind of large turbine. Three-foot close to the house is all I can manage. The Ametek 30 will become part of a "weather station", and also charge a 12v battery as a load.
For the most part my questions have been answered with the search function but now I have a question. Taking into consideration what said above I now have a long term project when I was wandering around one of my local electronics surplus houses and I came across a motor, a PMDC .75hp, 30.7amp, 24vdc, 1800rpm, 560watts. I made the leap of faith with low rpm, high current and lower voltage it should work.
Here is a link to the company that made it; http://www.pacsci.com/products/pmdc/index.html Model number; BAF3644-5737-56BC. It has an external fan in the bell at the rear; I have had a brush cover off. The brush covers need a gasket and I did not see any holes under the fan. I did not take the fan off but by adding gaskets to the brush cover the motor looks splash tight. From the labels it looks like the motor was custom made for; http://www.spectrawatermakers.com/ that leads me to think with the addition of brush cover gasket this thing should be watertight. Quality looks excellent.
It looks a lot like this one white instead of black; http://www.windstreampower.com/443905_PMDCG.php They do not give the motor voltage, just the generator. Body style is the same could be the same vendor no way of telling. From the resistance reading given I think this would be a higher voltage model.
Right now I have no way of testing anything this size. One of the really impressive tests was to connect a 1.2v NiMH AA cell and the shaft was hard to stop, on 3.7v LiIon I was unable to stop the shaft. Twisting the shaft by hand I was able to generate 1.2-2vdc open circuit. Short circuit current up to 2 amps this is just with hand twisting the armature. Resistance measured at 0.11 ohm.
It will be awhile before I can find some one who has enough equipment to test with.
Now for some questions, I know that the real answers will come when I can actually test this thing. In the mean time has anyone here had experience with motors like this? Any thoughts? I know it can generate but any opinions, on how good of a generator it might be? Was this a good find? I'm sure it will work for 12v, 24v, but will it work for a 48v pack which needs nearly 60 volts or above? This is along term project, as I do not have a place to fly it. What I was hoping for was approx 60vdc output under load to charge a 48v battery bank, connected to an Outback grid-tied inverter. So the system would be a hybrid solar/wind system.
Almost forgot $95.00 plus tax.
-- thank you
-- Brandy
