RE: Saturable Reactors (yes, again :)) (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sat, 18 Feb 2006 05:57:43 -0800
From: Jim Mora <jmora@xxxxxxxxxxx>
To: 'High Voltage list' <hvlist@xxxxxxxxxx>
Subject: RE: Saturable Reactors (yes, again :)) (fwd)

Hello,

I fail to see why a three phase reactor or transformer (cheap to scale up)
could not be utilized with this scheme. I am thinking the center phase is
the controlled AC winding and the outer legs are DC reversed phased? 

Thanks,
Jim Mora

-----Original Message-----
From: High Voltage list [mailto:hvlist@xxxxxxxxxx] 
Sent: Friday, February 17, 2006 7:00 AM
To: hvlist
Subject: RE: Saturable Reactors (yes, again :)) (fwd)

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 15 Feb 2006 10:22:39
From: David Dameron <ddameron@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: RE: Saturable Reactors (yes, again :)) (fwd)

Hi Carl and all,
Modifying a center tap transformer as you suggest won't work. The 2 fluxes
would just cancel and you would have nothing except something like a
non-inductive winding. You need 2 or more magnetic paths. 2 separate single
phase transformers would work with the outputs bucking, they can be
toroids, EI construction, etc. I used to have a sheet with several unusual
configuration drawings, am looking for it. I have tried the 2 transformer
approach with small transformers.
The number of turns on the control windings doesn't need to be larger than
the AC series (power) one, a certain amp-turns is required to saturate, and
the number of turns gives what control amperage is required.
-Dave D.

At 08:23 AM 2/14/06 -0700, you wrote:
 
>
>Since either the control or the power may apparently consist of 2
>windings as long a there is no net voltage induced into the control, I
>wondered if the transformer removed from a small pole pig might also
>work well.  Isn't the low voltage side provided with a center tap?  If
>so, it would seem that this might be split into 2 at that point and the
>same wired in series opposing so that the net fluxes cancel and the HV
>side used as the control.
>
>Any thoughts on this?
>
>Carl Litton