The Thyristor component uses a simple model to model a thyristor. There are three operating modes: conducting, blocking, and reverse-breakthrough.

In the blocking mode, the anode-cathode path behaves like a constant resistance,

$R_{\mathrm{off}}\=\frac{V_{\mathrm{DRM}}^2}{V_{\mathrm{TH}}{I}_H}$

If the anode-cathode voltage exceeds $V_{\mathrm{DRM}}$, or a positive current of sufficient magnitude and duration flows into the gate, the device enters the conducting mode. It remains in the conducting mode until the anode current falls below the holding current, ${\mathrm{I}}_H$. In the conducting mode the anode-cathode path generally behaves like a constant resistance,

$R_{\mathrm{on}}\=\frac{V_{\mathrm{TM}}-0.7}{I_{\mathrm{TM}}}$

If the anode-cathode voltage is negative, the model behaves as a diode with reverse breakthrough voltage $V_{\mathrm{RRM}}$.

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.