Steady-state and dynamic performance of front-end diode rectifier loads as predicted by dynamic average-value models

Dynamic Average Modelling of Rectifier Loads and AC‐DC Converters for Power System Applications

“…The bridge currents are then expected to be very similar in the presence and absence of the shunt filters. This is indeed observed in the top plots in With series choke inductor (CCM): Figure 10.5 Three-phase AC currents of the system at the input source terminals in the presence of shunt filters for DCM and CCM operations (© 2013 IEEE) [35].…”

“…Finally, generalization of the analyses is considered for high-pulse-count converters using an example six-phase (12-pulse) topology. The studies demonstrate that all critical characteristics and impedances are accurately predicted by the considered dynamic average models [35]. This is an extremely desirable property of AVMs making them suitable for investigating a wide range of steady-state and transient conditions caused by balanced or unbalanced faults.…”

“…2 The AC side in a typical three-phase front-end rectifier load system represented in PSCAD: (a) equivalent series impedance (b) general network with shunt filters (© 2013 IEEE) [35].…”

“…The zero sequence is again omitted as dictated by the system topology. The final impedance four-by-four transfer matrix is defined as [27] [35].…”

“…series choke inductor (DCM): With series choke inductor (CCM): Typical three-phase currents at the rectifier bridge terminals without and with series choke inductor (DCM and CCM): (a) without shunt filters, (b) with shunt filters (© 2013 IEEE)[35] [17]…”