| T O P I C R E V I E W |
| mechamz |
Posted - 29/06/2008 : 10:57:04
can anyone suggest an alternator which is able to generate power under low rpm, around 160 something.
what I found is these 2,http://www.futurenergy.co.uk/turbine.html
and http://www.windbluepower.com/Permanent_Magnet_Alternator_Wind_Blue_Low_Wind_p/dc-540.htm
but for DC-540, how much Wh can it generate at 150rpm, since the graph is not very detailed. anyone know?
Thanks
looking for low rpm alternator |
| 2 L A T E S T R E P L I E S (Newest First) |
| mechamz |
Posted - 29/06/2008 : 15:35:25
quote:
Originally posted by optixelectrics
Hi Mechamz,
Are you in a low wind site? one of the problems you will have is for example, that you can make 12V at low revs using a 48V futurenergy, or a SC120 at very low revs, but the problem is that you will need significantly bigger blades than normal to overcome the stall that will occur when the turbine hits 12V. The other problem is current. The higher voltage turbines are designed to make 1KW in a 28mph at 48V (at roughly 20 amps). If you have the blades to push the alternator round, and overcome the stall, then you will very quickly exceed the maximum rated current of the alternator coils, which will melt it!! (and render it useless).
Myk
ya, a relatively low wind site. It's around 3-4m/s
any idea?
looking for low rpm alternator |
| optixelectrics |
Posted - 29/06/2008 : 12:29:23
Hi Mechamz,
Are you in a low wind site? one of the problems you will have is for example, that you can make 12V at low revs using a 48V futurenergy, or a SC120 at very low revs, but the problem is that you will need significantly bigger blades than normal to overcome the stall that will occur when the turbine hits 12V. The other problem is current. The higher voltage turbines are designed to make 1KW in a 28mph at 48V (at roughly 20 amps). If you have the blades to push the alternator round, and overcome the stall, then you will very quickly exceed the maximum rated current of the alternator coils, which will melt it!! (and render it useless).
Myk |
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