AC coupling with Sunny Island or XW6048

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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #32
    Re: AC coupling with Sunny Island or XW6048
    RK_Solar_Hopeful wrote: »
    ... If the voltage drop across the diode doesn't affect operation of the attached Islanding inverter.

    May have to find a used inverter (cheap!!) for testing.

    The inverter won't care much about a 2v drop (if it's a 48V inverter) Any switching glitches may trip it off-line. And you can't really put diodes in parallel, they don't share current well, unless you use ballast resistors (more voltage drop & heat)

    Maybe there are some hhigh power/voltage FET's that you can bias as diodes?
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
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  • RK_Solar_Hopeful
    RK_Solar_Hopeful Solar Expert Posts: 69 ✭✭✭✭
    #33
    Re: AC coupling with Sunny Island or XW6048
    mike90045 wrote: »
    ... Maybe there are some high power/voltage FET's that you can bias as diodes?

    Thank you for the pointer. Some quick research shows this is a better idea.
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