Re: [a-w-h] AIRX 4 wire system?
- I thought I remember hearing/reading that the AIRX disconnected the
generator from the battery bank (very quickly) in order to read the
battery voltage so that the wire size didn't matter so much.
I'm not sure if this is true though - I've seen that there are 3 MOSFETS
inside an AIRX and if they blow (and go closed circuit) it seems to
short the coils - so I guessed the 3 MOSFETs are there to allow the AIRX
to short the three phases for braking. But I'm not sure if this could
allow the generator to be disconnected from the battery source for
voltage measurement and there is no zero crossover with three phase so I
suppose the battery voltage can't be measured like that either.
> Brand new to the group.--
> Why doesn't the AIR-X come with a 4 wire system so that the wires do
> not have to be so big. By using 2 wires for remote sensing the
> battery voltage (with no voltage drop), then the other two current
> carrying conductors can have a little more loss without impacting the
> internal voltage regulation.
> Has this topic been discussed? Is there a user-mod to accomplish this?
> Bob, WB4APR
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- I installed an AIR X, 12V and I made the following
1) after connecting the negative wire to my battery
bank, as I did the
same with the positive, the wire was becoming very
hot. I disconnected it.
2) Later I verified the whole installation and found
no bad wiring. I
connected again the positive wire and it worked well.
3) The system spent a week without any trouble.
4) Suddenly the positive wire went again very hot.
Before we noticed it,
it damaged the turbine. On the circuit board, the
servo chip was damaged
although the other parts were still good.
5) The battery bank was old. Can the battery state be
the cause of this
6) We had similar old battery bank with the AIR403 and
experienced such problem
7) Is this problem related to the method the AIR X
circuit monitors the
8) We also notice that three wire are coming from the
instead of four like in the AIR 403
I would appreciate your comments.
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> From: email@example.comAs a newbee to this group, I am considering the purcahse of the
> I installed an AIR X, 12V and... the wire was becoming very
> hot. I disconnected it. Suddenly the positive wire went
> again very hot. Before we noticed it, it damaged the turbine.
24 volt AIR-X. I have seen Paul Gipe's comments on the failure
of the turbine To meet advertised power above about 150 watts,
Average wind is less than that, so that is not an issue.
But if it works as advertised below that level and DOES actually
Begin to turn at 7 MPH as advertised, then it is appropriate for
So I guess that is my question, (1) is it reliable?
(2) And how well does it work at the low-wind end of its
performance. I live
in a low wind area and will have to get
To over 100 feet to hopefully get some wind. Using HAM radio
The APRS system, you can see the wind profile of the nearest ham
WX station to me which is about a mile away. His annemometer is
Feet over his house and relatively in the clear.
Here is his APRS location:
And here is his WX profile:
From this data, it appears I will not be getting any power the
majority of the time.
But that is OK, since I mostly want just some GREEN backup
charging power when the
Power goes out in the middle of storms (plenty of wind then)..
I'm chosing to go with 24V so I can use smaller wire for the
200' run to
my power system, but maybe 24v is harder to get in low wind?
The 12 volt system would begin to generate charging current
(though tiny) at
A lower wind speed than the 24 volt system?
Come to think about it, would the smart charging in the 24v
system prevent it
From producing any current into a 12 volt battery in light winds
if I temporarily
Connected it that way to get something into a battery?