The Voltage Frequency Controller (or 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 frequency (input signal $u$), but limited by $V_{\mathrm{nom}}$ (nominal RMS voltage per phase). The output consists of $m$ sine waves with amplitudes as described above, They are intended to feed an m-phase Signal Voltage block. Phase shifts between sine-waves may be chosen by the user; the default values are $\frac{k-1}{m}\mathrm{\pi }$ for $k$ from 1 to $m$.

$y_k\=A\sin \left(x\+{\mathrm{\Phi }}_k\+{\mathrm{\phi }}_{\mathrm{comm}}\right)$

$A\&equals;\sqrt{2}{V}_{\mathrm{nom}}\{\begin{array}{cc}\frac{\left|u\right|}{f_{\mathrm{nom}}}& \left|u\right|<f_{\mathrm{nom}}\\ 1& \mathrm{otherwise}\end{array}$

$\stackrel{\&period;}{x}\&equals;2\mathrm{\pi }u$

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

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.