From: Jesse Lackey <jsl-ml@celestialaudio.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Sat, 31 Jul 2021 22:33:01 -0700
Subject: Re: [EE]: Solar Micro Inverters
Thread-Topic: [EE]: Solar Micro Inverters
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Microchip appnote for the win:
<https://ww1.microchip.com/downloads/en/AppNotes/01444A.pdf>
"Grid-Connected Solar Microinverter Reference Design"

The TL;DR: it is complicated.
J


Luis Moreira wrote:
> Hi all,
> Long time since posting here.
>=20
> I started having a look at solar micro inverters and although I can
> understand the principle of them and why you would use them, I'm failing =
to
> find more detailed info..
>=20
> Do you guys have any links for detailed descriptions for them that you
> would like to share?
>=20
> My immediate questions are:
>=20
> - On the grid tied systems, are they all in effect connected in parallel
> and with the grid directly or is there some sort of "aggregator" in place=
?
> - do they have a short term storage device like a battery/capacitor
> internally for the intermediate DC/DC converter or does it have some sort
> of direct DC/DC/AC converter?
> -  how does the sync circuit work? it probably needs to be faster than a
> normal inverter circuit or the wasted energy while trying to lock would b=
e
> too high.
>=20
> Any diagrams and algorithms would be greatly appreciated.
>=20
> Thank you in advanced
> Best Regards
>                    Luis
>=20
--=20
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