For the unsymmetrical load (resistor, capacitor and inductor) the parameters inductance L and capacitance C are chosen such way that the magnitudes of the three-phase currents (see currentSensor12, currentSensor23, currentSensor31) are equal.
P.Vaske, Berechnung von Drehstromschaltungen (German, Calculation of polyphase circuits), Teubner 1973, page 43, example 23