Microinverters and power optimizers for Solar PV

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mike95490
mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
in Grid Tie and Grid Interactive Systems #1
http://www.edn.com/article/CA6709552.html

Solar Magic

Enphase (20 year design, 15 year warranty)

Well, they don't cover much in this article, that we've not discussed before.

yawn.

I'd hoped one of my trade mags would have had some more depth.
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 ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,

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  • RCinFLA
    RCinFLA Solar Expert Posts: 1,484 ✭✭✭✭
    #2
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    Re: Microinverters and power optimizers for Solar PV

    Solar Magic sounds like smoke and mirrors.

    " If one of the panel’s voltage drops due to, say, the presence of dirt, Solar Magic algorithms adjust the module’s current to arrive at the optimal power output."


    Did not know I need extra electronics to drop their current when panels get dirty. :)

    They are avoiding the toughest issue, providing the 120 Hz power profile filter. Sounds like a per-panel boost switcher with a maximum voltage cap of 350-400 vdc so you can put all the panels on a high voltage parallel feed line. Does have some merit if you have a shading problem but pretty expensive way to get shading loss reduction.
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