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Forum Index : Windmills : 5 Phase pma project
| Author | Message | ||||
| faroun Regular Member  Joined: 18/09/2008 Location: Posts: 62 |
here is few links to my 5 phase pma project. youtube link 01 youtube link 02 regards sam Many Ideas One Brain. http://www.wrapwind.com |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
Thanks for posting Sam Interesting project, let us know how it performs. The workmanship is very good, I like the coil winder. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| faroun Regular Member Joined: 18/09/2008 Location: Posts: 62 |
here is the results, i compared 3 phase to the 5 phase: 3 phase: 1disc 10" 24magnets, n48, 1x.5x.5 18 coils, 18gauge, 100 turns, star connection, ladder rectifier (the one i built). no load @ 165rpm =>13.5vdc loaded using bulb, @ 235rpm =>13.5vdc in total the tape drive consumed 42 watt produced 12 watt included in this figure is 3.2watt for tape drive. 70rpm diffrence from loaded to unloaded due to resistance. losses 30 watt. 5 Phase: 1disc 10" 24magnets, n48, 1x.5x.5 20 coils, 18gauge, 100 turns, star connection, ladder rectifier (the one i built). no load @ 200rpm =>13.5vdc loaded using bulb, @ 255rpm =>13.5vdc in total the tape drive consumed 35 watt produced 11.2 watt included in this figure is 3.2watt for tape drive. 55rpm diffrence from loaded to unloaded due to resistance. losses 23.8 watt. on another forum we came to the conclution that the resistance is 6.18ohms and that is why the volts VS rpm changes. do you feel that is correct? thanks sam Many Ideas One Brain. http://www.wrapwind.com |
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GWatPE Senior Member  Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Sam, I think that some more electrical data would be of use. To be of use, the loads should be varied and the power for the same rpm of each test would be a better comparison. The higher cutin rpm alternator gives a higher efficiency. This will be clear considering the fewer total turns per phase, and effectively more in parallel, giving a lower resistance. The losses still seem quite high, but I am unclear as to the total power output for the losses you have quoted.. Gordon. become more energy aware |
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| faroun Regular Member Joined: 18/09/2008 Location: Posts: 62 |
3 phase VS 5 phase conclusion ------------------------------------------------------------ -------------------- bellow is an update to where i am at. it havs been terrible with snow storms. things are a bit slow. but moving ahead. 3phase: 1 disc, 24magnets, 10.25" 18coils, 125turns, 18awg, star config free spinn= 100rpm=>13.5vdc under 24vdc light bulb load=> 130rpm=13.5vdc under 36vdc light bulb load=> 122rpm=13.5vdc under 48vdc light bulb load=> 115rpm=13.5vdc @45rpm=1.25amp shorted 5phase: 1 disc, 24magnets, 10.25" 20coils, 100turns, 18awg, 5neutral config free spinn= 155rpm=>13.5vdc under 24vdc light bulb load=> 187rpm=13.5vdc under 36vdc light bulb load=> 182rpm=13.5vdc under 48vdc light bulb load=> 176rpm=13.5vdc @85rpm=1.85amp shorted regards sam Many Ideas One Brain. http://www.wrapwind.com |
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Downwind Guru  Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
More so you have less turns per phase and extra diode loss (1.2v) for the 5 phase compared to the 3 phase. Pete. Sometimes it just works |
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| faroun Regular Member Joined: 18/09/2008 Location: Posts: 62 |
Pete, i was hoping for better result on the 5phase  , well all my projects are on youtube for others to see and learn from.
i cant wait to get the 3 phase hooked up on my vawt. regards sam Many Ideas One Brain. http://www.wrapwind.com |
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