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Old 12-28-2010, 06:29 PM   #1
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Regulating output current of an alternator


I live off grid and use solar to charge a large 24v battery bank for my electricity.
I have tried using 24v automotive alternators but cannot figure out how to limit the current of the alternator.
The battery bank is large so when the alternator kicks in there is a huge draw and it puts too much pressure on the belts. In the past this has resulted in the belts being thrown from the pulleys.
Is there a way to limit the current that the batteries will pull from the alternator?
Thanks for any help,
Bernn

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Old 12-28-2010, 07:17 PM   #2
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Regulating output current of an alternator


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The battery bank is large so when the alternator kicks in there is a huge draw and it puts too much pressure on the belts.
Ayuh,... It sounds to me like the Battery Bank is in failure, or is discharged to a near Dead state...

Have the individual cells been Tested,..??

Alternators are design to maximum output, if, 'n when required...

If it's throwing it's belts, the belts, 'n pulleys are the suspects...


Last edited by Bondo; 12-28-2010 at 07:19 PM.
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Old 12-31-2010, 06:29 AM   #3
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Regulating output current of an alternator


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Ayuh,... It sounds to me like the Battery Bank is in failure, or is discharged to a near Dead state..
hey man, what must I do if that happens? I am currently with that situation.
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Old 12-31-2010, 10:18 AM   #4
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Regulating output current of an alternator


Well,... Test the cells in the bank with a hygrometer, 'n load tester, replace any Bad cells, then charge per the cell's manufacturer's spec's...
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Old 12-31-2010, 10:30 AM   #5
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Regulating output current of an alternator


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Originally Posted by intropiles View Post
hey man, what must I do if that happens? I am currently with that situation.
Replace the batteries. If one is bad and they were all bought at the same time, likely they are all close to the same state. 5 years is about the life of batteries we use in our UPSs.
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Old 12-31-2010, 07:50 PM   #6
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Regulating output current of an alternator


Inverter to transformer to rectifier then to batteries.

DC to AC to Transformer of desired voltage then back to DC to batteries.

DC cannot be transformed.

But i'd go and test all the batteries first like said above. Yeh, typical lifespan of UPS batteries are 5 years or so.
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Old 01-23-2011, 04:07 PM   #7
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Regulating output current of an alternator


Could one of you guys post a block diagram of your system?

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