[permaculture] Inverter in a battery-less system?
John Fritz
johnfritz77 at yahoo.com
Thu May 14 11:18:43 EDT 2009
I don't understand why one would need an inverter in a grid tie battery-less system? If I am getting my juice from the grid, it is already AC. Why would I need to invert it to anything else.
John Fritz, NW Arkansas.
Message: 3
Date: Tue, 12 May 2009 11:51:07 -0600
From: Stephen Sherman <spsherm at msn.com>
Subject: Re: [permaculture] batteries vs grid-tie
To: permaculture <permaculture at lists.ibiblio.org>
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I can't seem to find the original post, but here are a few thoughts...
Batteries add to the cost of a system, but they provide power when the
grid is down. Not only from the power they store, but also because many
(perhaps most) grid connect/battery-less inverters won't invert if the
grid is down, even if your PVs/wind are making electricity. So it really
depends on what you want out of your system. Do you need electricity
when the grid is down? Do you need your AE system to act as a UPS for
some critical equipment? If so, you probably will need some batteries on
the system and an inverter designed to use them.
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