RE; voltage clamp [RE-wrenches]

[Darryl Thayer]

Thanks Hugh
I will contact the Holland group. 
However the PWM is not as elegent as the DC to DC
transformer in the MX60 as I get more power to the
battery this way.  ?Am I correct?

I also recived an off group note from Solar Converters
saying they can do it also, however there unit is
limited to about 12 amps.  I need a each unit to be
about 4000 watts or 33 amps, as I have a peak of
12,500 watts from all legs. I have used the MX up to
about 3600 watts and was thinking I could throw away
anything above 3600 watts per leg.

Your point about the MX not liking the single phase
ripple is a good note.  I have been told the MX does
not like being paralleled on the input.  

So it might be back to the drawing board.

Thanks again.
Daryl

--- Hugh Piggott <hugh at scoraigwind.co.uk> wrote:
> Daryl,
> >
> >it is a field type 3 phase AC, the field controller
> is
> >lost, It is set to operate off a resistor from the
> >armature to the field.
> >
> >The frequency output is from 10 to 40 Hz.  
> >
> >I was planning on using a full wave rectifier and
> >putting each leg into a DC to DC converter, ie the
> >MX60.  From there to a battery set and three
> GVFX3648
> >inverters.
> 
> My instinct is that the Mx60 would prefer a smoother
> DC as produced 
> by all three phases and would not like the single
> phase output from 
> one leg, but I could be wrong.  I would use a three
> phase rectifier 
> arrangement.  But maybe this would mean you have to
> parallel the 
> MX60s, and maybe that is not such a good idea?
> 
> >
> >The field control seems hard to do.
> 
> It would seem like an elegant solution if it can be
> done fast enough.
> 
> On the original subject, you can get a suitable
> voltage clamping PWM 
> controller from stroomwerk in holland. "dirk.elzinga
> / Stroomwerk" 
> <dirk.elzinga at stroomwerk.nl>
> 
> I am not sure how it would like the 48 volt battery
> in the dump circuit though.
> -- 
> Hugh
> 
> http://www.scoraigwind.co.uk/
> 
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