A parametric dynamic phasor model of line-commutated rectifier systems

Recently, the generalized averaging method (GAM) has received significant attention to effectively model and simulate dynamics of ac-dc power systems using dynamic phasors (DPs). The conventional analytical DP (ADP) models of line-commutated rectifiers (LCRs) have been derived based on switch functions, which are only valid for certain operating mode. In this paper, a new parametric DP (PDP) model of LCRs is presented, which relates the ac-dc subsystems through a set of parametric algebraic functions that account for various loading conditions. Simulation results validate the advantageous accuracy of the proposed PDP model of LCRs, and demonstrate its superior numerical efficiency over the time-domain detailed model and the prior ADP model.