The QuasiStatic Vf Controller component is a simple voltage-frequency controller. The amplitude of the voltage is linearly dependent ($\frac{V_{\mathrm{nom}}}{f_{\mathrm{nom}}}$) on the frequency (input signal $u$), but limited by $V_{\mathrm{nom}}$ (nominal RMS voltage per phase). An $m$ quasistatic phasor signal is provided as output signal $y$, representing complex voltages. The output voltages may serve as inputs for complex voltage sources with phase input. Symmetrical voltages are assumed.

$y\=\mathrm{Modelica.ComplexMath.fromPolar}\left(\mathrm{fill}\left(\mathrm{amplitude}\,m\right)\,\mathrm{orientation}\+\mathrm{fill}\left(\mathrm{BasePhase}-\frac{\mathrm{\pi }}{2}\,m\right)\right)$

$\mathrm{amplitude}\&equals;V_{\mathrm{nom}}\{\begin{array}{cc}\frac{\left|u\right|}{f_{\mathrm{nom}}}& \left|u\right|<f_{\mathrm{nom}}\\ 1& \mathrm{otherwise}\end{array}$

[1] $-\mathrm{Modelica}\cdot \mathrm{Electrical}\cdot \mathrm{MultiPhase}\cdot \mathrm{Functions}\cdot \mathrm{symmetricOrientation}\left(m\right)$

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.