Predictive zero-sequence control of parallel three-phase active rectifiers

Model Predictive Control has been recently considered for many power electronics control applications. The reasons of such interest are the many benefits it can provide over classical control techniques. As for example of these advantages, Model Predictive Control avoid cascaded control loops, easily include non-linear constraints in the control algorithm and provides a fast dynamic. In particular, Finite Control Set Model Predictive Control directly considers the discrete power electronics converters state to perform the control action, thus simplifying the control derivation and implementation. This paper proposes an application of Finite Control Set Model Predictive Control to parallel three-phase active rectifiers control, where active and reactive power, DC voltage and zero sequence power are controlled within one single control loop. The proposed control approach is validated through simulation in several operating conditions.