From: Alan Pearce <kiwiantipodean@googlemail.com>
To: "piclist@mit.edu" <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Sun, 1 Aug 2021 07:52:09 -0700
Subject: Re: [EE]: Solar Micro Inverters
Thread-Topic: [EE]: Solar Micro Inverters
Thread-Index: AdeG5hlY7Juou/D7SemKW6VKPUrIAg==
Message-ID: <20210801155209.1f594104@raspberry>
References:
 <CAH5-xwZrSN5GTQxjvtOHUntqOKbMXEYtjWwHyVoM5X7_tKFpKg@mail.gmail.com>
	<f908694c-5f4b-7fd6-6b25-88f05ccd6140@celestialaudio.com>
	<CAH5-xwbUViRsTZYbvBYWQkgMsBACoUK_wMM1ww-F6fNaQaNAsA@mail.gmail.com>
	<IQ-CnqZtUVPxyT62Si0Rjq65LF3ttG3otYJcvREKt_N2rMfsb5rRljf-Kc3DcP-1O_SxmO32HGEvClaNytAlupm6iTnhC4qLoklzCDMx8TE=@protonmail.com>
	<CAH5-xwapen6DHPyZ2EMCmkWXKoTFnc5XVVmBTTzRRrnrM-sjLA@mail.gmail.com>
In-Reply-To:
 <CAH5-xwapen6DHPyZ2EMCmkWXKoTFnc5XVVmBTTzRRrnrM-sjLA@mail.gmail.com>
Reply-To: Microcontroller discussion list - Public. <piclist@mit.edu>
Accept-Language: en-US
X-MS-Exchange-Organization-SenderIdResult: Pass
X-MS-Exchange-Organization-PRD: mit.edu
X-MS-TNEF-Correlator:
received-spf: Pass (protection.outlook.com: domain of googlemail.com
	designates 209.85.128.41 as permitted sender)
	receiver=protection.outlook.com; client-ip=209.85.128.41;
	helo=mail-wm1-f41.google.com;
dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed;	d=googlemail.com;
 s=20161025;
	h=from:date:to:subject:message-id:in-reply-to:references:organization
	:mime-version:content-transfer-encoding;
	bh=3TvFdCiohuO3xFVWAF2+dyqFRMJxgB2sIkWgTz1HBCE=;
	b=cyJT+fbPopWs2V99JUg95wJnwl5D5i51vH18GZtBK6EseWeHJHkweKHAARfNNbRlk9
	hDv7ny6EbgqtoMp6CLMmh3pb3R/Ml/GJEBTW2dTVISADPE6qZBDHI3MzkMglF5l8ZYMk
	kdgCZ61OS2jeUVj0gXZztJ9dTO+sQB7BetpoSBXIArxP5fDecD4pCfNYsdeB7IE/NWbI
	msJZwIGrfkK0GouoQHTtURKFNafY+xa77A2mnM9eN5pf492bwJMHHBAapu0jKN/3Hwzx
	hePnTa85lBzNsbE329XRJpU1NHJGfcN7h5RFCnCejwoG9SxK0S//LgHwRtlwz7E1tDno	N+hg==
authentication-results: spf=pass (sender IP is 209.85.128.41)
	smtp.mailfrom=googlemail.com; mit.edu;	dkim=pass (signature was verified)
	header.d=googlemail.com;mit.edu; dmarc=pass action=none
	header.from=googlemail.com;
errors-to: piclist-bounces@mit.edu
list-id: "Microcontroller discussion list - Public." <piclist.mit.edu>
list-post: <mailto:piclist@mit.edu>
x-beenthere: piclist@mit.edu
x-mailman-version: 2.1.6
x-received: by 2002:a05:600c:1993:: with SMTP id
	t19mr12441072wmq.62.1627829534463; 	Sun, 01 Aug 2021 07:52:14 -0700 (PDT)
x-topics: [EE]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0

On Sun, 1 Aug 2021 15:19:32 +0100
Luis Moreira <luis.moreira1575@googlemail.com> wrote:

> Hi,
> Sure I get that it will be doing something like that, but I wonder
> how fast does it do it and how much all the devices attached to it
> can take in terms of change. presumably the devices can take quite a
> bit of change and I'm overthinking this, but would be interesting to
> get some details. The descriptions I can find  when I search on the
> subject, talks of a PLL lock to the grid by using zero crossing
> detection, which makes sense.

Well, most 50Hz distribution systems talk in terms of 50Hz +/-5Hz, and
I imagine 60Hz systems have a similar tolerance. So on the basis that
the inverter can be pulled a similar amount I would expect phase lock
to be achieved within a second or so.

--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.