Converter parameters

General parameters

• Vd Base: Base for direct voltage (kV);
• Id Base: Base for direct current (kA);
• Vac Base (Ph-Ph): Rated AC voltage on the transformer primary (kV rms);
• Synchro Bus: Name of the bus whose voltages are used to synchronize the firing system;
• Line Bus (Vd Measure): Name of the bus connecting the converter and the DC line; the direct voltage measurement is taken on this bus;

Converter transformer

• Transfo name: Transformer label;
• Leakage: Leakage inductance of converter transformer for star or delta winding on valve side (henry);
• Note: Used to determine the commutation resistance to calculate the γ and µ angles. It is assumed that the leakage on the primary side is null and that no series inductance is connected between the switching bus and the transformer. Otherwise, the primary leakages and/or series inductance will be brought back on the secondary side and included in the leakage L.
• Y (lagging = 0, leading = 1): Indicates the relative phase between secondary windings of the transformer. If “0”, the delta winding lags the wye winding; if “1”, the delta winding leads the wye winding.