Re: dc-ac inverter

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 

Most inverters have fairly simple internal designs, so modifying them to
slave to a common reference frequency probably isn't that tough. If you have
the tools and skills to contemplate this in the first place, then doing a
bit of reverse engineering won't be that tough.
I'd look into the inverters and such aimed at the home power market, since
they'll have the capacities and sine wave output.
You could also use a 20 kW 240V inverter and run it into a 240:480V dry
transformer.

As far as a roll your own design, it really depends on how good you want the
waveform.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, April 03, 2004 1:19 PM
Subject: dc-ac inverter


 > Original poster: "Virtualgod" <mike.marcum-at-zoomtown-dot-com>
 >
 > Anyone got any links to schematics that convert some dc voltage (prob120+)
 > to 60-400hz ac 480V hopefully reasonably close to an actual sine wave? I
 > was thinking of getting 4 120v 5kw ones and series them together. Then i
 > realized if only it were that simple (internal switching frequencies of
 > each will probably not be exact, and cause all sorts of problems). All I
 > find on a google search that comes close to what I'm looking for (I think)
 > is this
 >
<http://www.electronics.50g-dot-com/cdcac.htm>http://www.electronics.50g-dot-com/cdc
ac.htm
 > , but only rated at 110 watts. Any ideas on modding this for 480v ~210A?
 > I'm thinking I'll need at least double that kVA rating in the core since
dc
 > is in it to purposely saturate it till the transistors switch. Finding
 > single transistors that can handle that kind of power is another story, so
 > might use mutliple smaller ones in parallel. I know, why don't I just get
a
 > 100kW generator? Well, sticking that in the basement (or even outside,
 > because of some stupid ordinance) is out of the question.
 >
 >