Bug fix for default phase angles of quasi stationary multi phase sources

[modelica-trac-importer]

Reported by christiankral on 14 May 2013 13:19 UTC
The default phase angles of time transient multi phase voltage and currents sources

• Modelica.Electrical.MultiPhase.Sources.SineVoltage
• Modelica.Electrical.MultiPhase.Sources.CosineVoltage
• Modelica.Electrical.MultiPhase.Sources.SineCurrent
• Modelica.Electrical.MultiPhase.Sources.CosineCurrent

are determined by

phase=-Modelica.Electrical.MultiPhase.Functions.symmetricOrientation(m)

The default phase angles of the quasi stationary multi phase voltage and currents source

• Modelica.Electrical.QuasiStationary.MultiPhase.Sources.VoltageSource
• Modelica.Electrical.QuasiStationary.MultiPhase.Sources.CurrentSource

are currently determined by

phase={0 - (j - 1)*2*pi/m for j in 1:m}

The quasi stationary implementation is inconsistent. This is a bug and shall be fixed in MSL 3.2.1 and MSL 3.2.

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Migrated-From: https://trac.modelica.org/Modelica/ticket/1099

[modelica-trac-importer]

Comment by christiankral on 14 May 2013 13:51 UTC
Two comments:

1. The problem in particular affects even number of phases only. For odd number of phases the original implementation and function symmetricOrientation lead to equal results.
2. Bug fix will be applied to MSL 3.2.1 only, since multi phase systems with even number of phase became relevant with the multi phase machine models for m>3 -- which are introduced in MSL 3.2.1 (not 3.2)

[modelica-trac-importer]

Comment by christiankral on 14 May 2013 13:54 UTC
Fixed bug according to d41c9f4.