Clarified PolyPhasePolygon

[AHaumer]

I implemented a clarification about the polyphase polygon connection.
For m>3 phases there exist alternatives for the polygon,
e.g. compare m=3, m=6=2x3, m=5 and m=7:

[beutlich]

CI fails due to invalid package.order: https://travis-ci.org/modelica/ModelicaStandardLibrary/builds/616352164#L212-L215

[AHaumer]

@beutlich:
Is "CI fai"l related to the fact that OM doesn't propagate the parameters of the diodes correctly?
An array of mSystems multiphase diodes, each containing mBasic singlephase diodes.

[AHaumer]

Finally resolved the type "PolyPhaseRectifier" vs. "PolyphaseRectifier".

[dietmarw]

@AHaumer One thing I wondered is the naming of MultiDelta. Didn't we agree that the term "poly" is the correct one. Should then the term also be PolyDelta? Just wondering.

[AHaumer]

@dietmarw regarding "delta" vs. "polygon": You're right, polygon is the more general term, although people working on 3 phase systems are used to delta.
If we change "delta" to "polygon" in general, we have to take care of the conversion scipt, since "delta" (maybe not "multiDelta") is widely used.
Should we really make the change? @christiankral what's your opinion?
If we make the change, shouldn't we do that in a separate PR?

[dietmarw]

@AHaumer You misunderstood. I did not mean the "Delta" but the "Multi". So to be consistent it should probably be "PolyDelta"?

[AHaumer]

@dietmarw
Ok I see, but the "multi" doesn't refer to the number of phases (polyphase), but to the number of (multiple) basic subsystems. Sorry to open the discussion about "delta" and "polygon" ... stop.
Just kidding: Will we end up with PolyPolgon?

[dietmarw]

It's fine by me but just wanted to make sure we overlooking this and then can not change the name until the next conversion script which might or might not be a while away. You could argue that we are also talking about "multiple" phase system. Still the correct term (as we found out) is poly-phase. So just wanted to make sure that MultiDelta is the correct term.

should be fixed

[AHaumer]

@dietmarw : done (...)

[christiankral]

I tested the examples with a different number of phases and everything seems to work