Quoting Lee Hart via EV <[email protected]>:
Having heard that the vintage Jacobs 1800 watt made more power than
the 2800 watt plant, I am considering putting up one of each. There is
a lot of 10 mph wind and I expect inertia might be a factor. I have
two 48 ft towers next to each other. I could see how each one did
charging the L16 battery. If I get it done I will try to share the
results. I am excited about possibly powering our Tesla with a
combination of PV and wind. Thanks to you all for your help...Ron
Mark Hanson via EV wrote:
Hi Ron Solberg etc
All small wind turbines like my Bergey XL-1 have boost converters
on them to change the varying voltage to a constant float voltage
for the L16 batteries you mentioned. 13.8v is maintained per 12v
increment or for your 48v system you would use a 55.2v boost
regulator for float and 60V to equalize monthly (with equalize
button). I used a Micrel (Google data sheet) MiC2171bu on a 24v
wind turbine I had that took 6-24v in and converted up to 30v out
with a bypass low drop Schottky diode when overspeeding. Look at
SMA Windy Boy controller or Berger.com.
Have a renewable energy day,
The modern wind generators I've seen used a PM motor. Some are DC
(with a commutator), but most are AC. These will generate a voltage
that varies with wind speed, so a controller of some kind is always
needed.
The old ones all used brushed DC wound-field generators. They worked
just like the old car generators; there was an armature and
commutator, and a wound field coil. The output was regulated by the
field current.
As speed increases, the field current was lowered to regulate the
output voltage (and current). They worked just like the "regulator"
in pre-1960's cars; a little box with two or three relays that would
select off/medium/high field current. The relays were carefully
adjusted to pull in at the desired voltage, and "chattered" on/off
as a crude switchmode regulator. The inductance of the field winding
served as the flywheel to even out the variations. This is exactly
the setup we use today in a series motor controller, but with
transistors doing the switching.
--
Fools ignore complexity. Pragmatists suffer it. The wise avoid it.
Geniuses remove it. -- Alan Perlis, "Epigrams on Programming"
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com[1]
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Links:
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[1] http://www.sunrise-ev.com
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