I've had some experience with VFDs to power pumps and they work great to
convert single phase to three phase. You do not need a three phase input.
With pumps we always upsized by 1 to ensure enough power for start-up which
is where you'll probably pull the highest load.
HTH
Gordie
----- Original Message -----
From: "Randall" <tr3driver@ca.rr.com>
To: "'Shop Talk List'" <shop-talk@autox.team.net>
Sent: Saturday, June 06, 2009 3:36 PM
Subject: Re: [Shop-talk] VFDs
>> Anyone got any experience with these thing or would otherwise
>> like to wade in?
>
> I don't have any experience; but have done pretty much the same research
> as
> you, with pretty much the same conclusion. Note that the homebrew
> converters, both static and "rotary" flavors also result in derating the
> load motor, and may cause it to overheat if worked close to original
> capacity.
>
> Also, eBay 230347132386 might be worth a look. For $300, it claims to
> support single phase input and 13 amps.
>
> Randall
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