Re: Solid State Egg of Columbus Driver - Circuit Review Requested (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sun, 29 Oct 2006 00:27:40 EDT
From: FIFTYGUY@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: Solid State Egg of Columbus Driver - Circuit Review Requested (fwd)

 
In a message dated 10/28/06 7:33:12 P.M. Eastern Daylight Time,  
tesla@xxxxxxxxxx writes:
 
>   Phase conversion with a Scott T or similar transformer  configuration 
requires polyphase >power to start with and if he had that he  would be home free!


    
    I've seen Scott T configurations used to supply  polyphase power to 
synchronous motors from a single phase source. I suspect the  Scott T was used more 
like a heavily reactive component to provide a phase lag,  so the resulting 
two phases were probably 90 degrees apart. This particular  setup also used 
relatively large capacitors as well.
    Overall a somewhat bulky way of running small,  permanent-magnet rotor 
synchronous motors.
 
-Phil LaBudde