Tue, 19 Dec 2023 08:19:31 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289027#Comment_289027 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289027#Comment_289027 Thu, 22 Apr 2021 11:45:04 +0100 djh
It's exactly the dropouts caused by short-duration automatic network switchovers that are my problem here. We get far more of them than I've ever seen before and I find them a real nuisance.

I don't think the suggestions about the behaviour can be quite right. Whatever system already knows the phase of the mains at the time the power goes down. It has to for microgeneration to work. And it causes a lot more inrush current and weird power excursions to restart an induction motor than to keep one running. UPS systems manage to keep continuous power. I can understand there might be a phase matching problem when restoring power; I don't know anything about how that is handled.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289029#Comment_289029 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289029#Comment_289029 Thu, 22 Apr 2021 12:41:01 +0100 Ed Davies https://www.batterymegastore.co.uk/product/victron-energy-multiplus-ii-48-3000-35-32-pmp482305010/ can be used like a UPS. They take a mains input (e.g., from the “grid”, a generator or an RV or boat's shore-power connection) and pass it through while at the same time charging a battery and taking power from the battery to boost or, if it disappears, replace the mains input. They'll take over in 20 ms so basically only missing one mains half cycle which won't be noticed by any computer or similar power supply.

AIUI (from a video about them) they'll automatically resync with the mains when it comes back before using the mains input.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289034#Comment_289034 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289034#Comment_289034 Thu, 22 Apr 2021 16:19:52 +0100 WillInAberdeen "some stuff in G83 about it."

My bad, G83 is superseded by G98.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289040#Comment_289040 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289040#Comment_289040 Thu, 22 Apr 2021 18:37:15 +0100 djh Posted By: Ed DaviesThings like these inverter/chargers
Yes, thanks. I need an AC-coupled battery because I have a microinverter-based PV system. I believe the Tesla Powerwall can provide backup during grid outages but the economics don't yet make sense for me. But it does seem that such systems are possible and are not prohibited by regulation.

What I still don't know is whether there are any systems that do have a 30-second downtime, and what revor meant by his 30 second comment?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289041#Comment_289041 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289041#Comment_289041 Thu, 22 Apr 2021 19:01:12 +0100 revor
https://fullycharged.show/episodes/tesla-powerwall-2-update/

Robert Llewellyn has video of a Tessla gateway battery system installed and demonstrated at his house.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289047#Comment_289047 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289047#Comment_289047 Fri, 23 Apr 2021 10:10:38 +0100 revor
https://www.aceongroup.com/wp-content/uploads/2020/03/AceOn-BMZ-Energy-Storage-Systems-2.pdf]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289231#Comment_289231 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=289231#Comment_289231 Fri, 30 Apr 2021 18:54:49 +0100 revor http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293239#Comment_293239 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293239#Comment_293239 Sun, 21 Nov 2021 12:18:11 +0000 Brian Faux This is a better performing lead acid battery developed by CSIRO (so AFAIK not just a youtube speculation) announced afew years ago (and I thought`this would be good for my forklift/storage`) but when it came to replacing said forklift battery a few months ago any questions about Ultrabatteries were met with blank stares.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293243#Comment_293243 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293243#Comment_293243 Sun, 21 Nov 2021 15:30:13 +0000 djh Posted By: Brian Fauxdoes anyone have any news of the Ultrabattery?
I presume you've looked at their web site? It appears to be available but mainly in America and Japan and only by negotiation with the company. I suppose you could see if they have any interest in your project?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293381#Comment_293381 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293381#Comment_293381 Sat, 27 Nov 2021 10:26:13 +0000 Brian Faux http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293382#Comment_293382 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16775&Focus=293382#Comment_293382 Sat, 27 Nov 2021 12:38:14 +0000 djh Posted By: Brian Fauxit would have significantly replaced the standard LeadAcid battery by nowI expect that depends a lot on its price. And I expect it's significantly more expensive than regular lead-acid cells, both because of the cost of manufacture and a desire to extract a premium price. Hence their search for niche applications like hybrid EVs - not regular cars and not regular EVs, just hybrid EVs and only a subset of those.]]>