Modelica.Electrical.MultiPhase.Functions

Information

Package Content

Name	Description
quasiRMS	Calculate continuous quasi RMS value of input
activePower	Calculate active power of voltage and current input
symmetricOrientation	Orientations of the resulting fundamental wave field phasors

Modelica.Electrical.MultiPhase.Functions.quasiRMS

Information

This function determines the continuous quasi RMS value of a multi phase system, representiong an equivalent RMS vector or phasor. If the waveform of the input deviates from a sine curve, the output of the sensor will not be exactly the average RMS value.

 y = sqrt(sum(u[k]^2 for k in 1:m)/m)

Inputs

Name	Description
x[:]

Outputs

Name	Description
y

Modelica.Electrical.MultiPhase.Functions.activePower

Information

Calculates instantaneous power from multiphase voltages and currents. In quasistaionary operation, instantaneous power equals active power;

Inputs

Name	Description
v[:]	phase voltages [V]
i[size(v, 1)]	phase currents [A]

Outputs

Name	Description
p	Active power [W]

Modelica.Electrical.MultiPhase.Functions.symmetricOrientation

Information

This function determines the orientation of the symmetrical winding with phases. For an odd number of phases the difference of the windings angles of two adjacent phases is . In case of an even number of phases the aligned orientation of winding is not modeled since they do not add any information. Instead the windings are divided into two different groups. The first group refers to the indices . The second group covers the indices . The difference of the windings angles of two adjacent phases - of both the first and the second group, respectively - is . The phase shift of the two groups is .

See also

User's guide on multi phase winding,

Inputs

Name	Description
m	Number of phases

Outputs

Name	Description
orientation[m]	Orientation of the resulting fundamental wave field phasors [rad]