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VAWT new proto-type
Bruce S:
--- Quote from: GoVertical on September 09, 2010, 09:05:32 AM ---Greetings, I completed fabrication of vertically stacked PMA's. The magnets are mounted on non-magnetic rotors. One is a 6 inch diameter with 3 stators and 4 rotors for a total of 24 coils that are wired in series. The other is a 8 inch diameter with 2 stators and 3 rotors that has 18 coils wired as a 3 phase with 6 coils per phase.
Stacking the stators vertically allows for a increase coil count while reducing the number of required magnets and does increase output at a lower RPM. So far I am very pleased with the results. I am still waiting for camera to be repaired and will post some pic's as soon as it is returned. Cheers
--- End quote ---
Looking forward to the pics :)
have you done any load or wind tests with it yet OR are you paying the Murphy's wind law at this time ;D
Bruce S
GoVertical:
Greetings, I constructed a simple frame that will attach to the trailer hatch receiver I installed on my car to test the turbine on the road at different MPH. I used a truck in the past to test turbines on the road and the technique does work. I hope to be testing within the week.
So far the only test on the PMA's has been a small 12 volt light and spinning the shaft with a wrench that has produced about 0.6 Amps at approximately 12 volts DC for the 3 phase. Coil alignment on the stators of both PMA's is critical and I have to add some holes and pins on both units to prevent the stators from spinning out of place before the road test. Thanks for inquiring. Best regards
GoVertical:
Greetings, still waiting for camera to be repaired. A friend was able to take some photos of the assembled 8 inch diameter 3 phase. The unit is 25 pounds and has 3 rotors and 2 stacked stators, 6 coils per phase. The photos show method that can be use to mount to a mast using 4 inch PVC pipe. I should be testing within the week. Cheers
GoVertical:
Greetings, working on 6 inch version of Vertically stacked stator PMA. Fuzzy photo's show progression of assembly. I hope to testing Sunday.
Plastic rotors allow for stacking of rotors and stators taking advance of the lines of flux that extend from both ends of the magnets. The advantage of stacking allow for increased coil configuration with less magnets required; which should provide higher output at lower RPM.
SparWeb:
This is a neat way of packing it all in, I will admit that. I often find myself wrapped up in the fun of building things, too. It's only later when I try to use them that the reality sinks in. Have you given that genny a spin up to 1000 RPM? Why not try to run it and get some juice flowing? I'm not looking for proof of anything - your goals are your own. But at some point all your effort and craftsmanship should to add up to producing electricity. I'm just surprised that after finishing one you are going on to build another, without testing the first to see if your effort was worthwhile.
What happens when it gets wet?
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