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stop dc storage in wind turbine
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| hi,
I am designing a portable wind turbine. Right now I have the rotor at
~40 rpm. I want to store the energy generated in a battery. Once the
battery is charged, the storage needs to be stopped (while the rotor is
running). I am wondering: how can i check whether the battery is
charged or not, some kind of feedback loop but I cannot figure out what
to use. Also, what how can I dispose off the power being generated once
the battery is charged completely. I would appreciate any help.
Thanks.
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| Does turbine generate ac or dc? Seems like a microprocessor could PWM
the output into the battery to do 2 things... not load the generator so
much the blade stops, and not overcharge the battery.
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| BobG wrote:
> Does turbine generate ac or dc? Seems like a microprocessor could PWM
> the output into the battery to do 2 things... not load the generator so
> much the blade stops, and not overcharge the battery.
>
okay, i am a little stuck here. I cannot figure out how to design a
generator (either ac or dc). My rotor has a torque of 300 Nm at 2.5
rad/sec angular velocity (24 rpm). I have read about various generators
(permanent magnet, wire wound, brushless) but how do I go about
determining the electrical output of my rotor. I may also need a gearbox
to convert rotor torque to rpm. I will appreciate any help.
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| Kiwi John 2005-08-23, 8:21 am |
| if you are clever and need a gear box try a 10 speed or a 21 speed bycle
the gearing is all there
hint blades go on where the pedals where "wink wink"
"aguy" <nospamab@nospam.hotmail.com> wrote in message
news:5YzOe.9409$A33.6969@lakeread06...
> BobG wrote:
>
> okay, i am a little stuck here. I cannot figure out how to design a
> generator (either ac or dc). My rotor has a torque of 300 Nm at 2.5
> rad/sec angular velocity (24 rpm). I have read about various generators
> (permanent magnet, wire wound, brushless) but how do I go about
> determining the electrical output of my rotor. I may also need a gearbox
> to convert rotor torque to rpm. I will appreciate any help.
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| There are articles about building permanent magnet alternators for win
turbines using volvo diskbrakes and other stuff... they seem to work
well at low rpm. power is torque x omega... looks like you have about
750 watts (one HP).
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| Anthony Matonak 2005-08-23, 1:21 pm |
| BobG wrote:
> There are articles about building permanent magnet alternators for win
> turbines using volvo diskbrakes and other stuff... they seem to work
> well at low rpm. power is torque x omega... looks like you have about
> 750 watts (one HP).
Could try this website.
http://www.scoraigwind.com/axialplans/index.htm
Anthony
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