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Robert Swinney
 
Posts: n/a
Default Flywheel on a rotary phase convertor

Hey, Don, it sounds like you are beginning to go off half cocked, sort of
"Iggy style".

Do this: Visualize 2 deltas connected in "parallel" if you will..
Obviously the current paths through the branches, where the lines are
connected, are in parallel. Now look at the common point where the other 2
legs of both deltas connect together. Those points are no more in parallel
than they would be if they were between two wyes.

It may be helpful to look at the configuration in its wye equivalent. Same
thing. All this speaks to the very complex current flow in an idler and
load connected as a RPC. Two 3-phase induction motors running on the same
3-phase line do not constitute a RPC. A RPC is two 3-phase induction motors
running on single-phase current. Capacitor augmentation assists in tuning
the network such that it appears to be operating from a 3-phase line.

Bob Swinney



"Don Foreman" wrote in message
...
On Wed, 4 Jan 2006 00:12:38 -0600, "Robert Swinney"
wrote:

Don Young sez:

"Since the running idler and load motors are directly connected in
parallel
. . ."

You are right about there being "many ways to understand and describe how
things work" but the concept of an idler and load motor's respective
windings being in parallel is not one of them.

Bob Swinney


Hey, Bob, what about delta-wound motors? Sure looks parallel to me!