[MRCG] Variable Frequency Motor Drive for 400Hz/800Hz Radio Power?

[Mark J. Blair]

> On Dec 18, 2019, at 2:46 PM, Jason W6IEE <w6iee.73 at gmail.com> wrote:
> 
> I've heard of hams modifying Uninterruptable Power supplies to output 400
> vs. 60hz, but never VFD's.

I've experimented with modifying a cheap imported solid state inverter to output 800 Hz power instead of 60 Hz, but haven't gotten usable results yet.


> Working around a lot of aviation electronics (not by choice! 🙄) There are
> many commercial, high-current  110V 60hz to 400hz converter's. Some
> judicious scrounging around anywhere that decommissions old test equipment
> may turn up one. Go with a strong back, these things are high in iron!

Proper aircraft bench test supply gear would be great! But I haven't found any at cheapskate ham pricing yet, which is why I'm considering wacky and probably ill-advised things like making my own inverter, or hacking something like a cheap VFD. I have a single-phase 600VA 60Hz to 400Hz motor-generator that Dennis gave me for the low, low price of "somebody pick it up fast, before the trash truck arrives" :) but nothing for a big 3-phase load like my 618T-2 yet.


-- 
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/