rparigoris
Joined: 24 Nov 2009
Posts: 797
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 Posted: Sun Jan 10, 2021 3:15 pm Post subject: Two charging devices running in parallel? |
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Hi Bob You wrote in a post for RV10: "TWO alternators don't play well running
in tandem unless their regulators are specifically chosen for parallel operation."
My specific question is about my Rotax 914. I will be using a single Earth-X 680C LiFe battery. It has an internal generator and I am using a B&C AVC1 regulator with set-point at 14.5 volts. In addition on the vacuum pad I have a B&C SD20S alternator with B&C LR3D regulator with set-point at 14.6 volts. The vacuum pad doesn't spin very fast and at lower RPMs the alternator doesn't put out as much as the internal generator. That said the internal generator best be kept to 12 amps or less continuous amp draw to achieve long life from it. Idea is let the alternator put out it's best and do as much work as it can as it can do so without worry of over taxing it. Then if set-point of 14.6 volts can't be maintained the generator will take over and supplement. I have a shunt to read amp output on both chargers.
Would my plan satisfy "regulators specifically chosen for parallel operation."
Thx. Ron P.
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