Finite Control Set-Model Predictive Control for the Dual Fed Common dc-link Open-End Winding PMSM Drive

This paper proposes a Finite Control Set-Model Predictive Control (FCS-MPC) for a dual-fed common dc-link Open-End Winding Permanent Magnet Synchronous Motor (OEW-PMSM). The common dc-link configuration significantly simplifies and reduces the costs of the topology but allows the Zero-Sequence Current (ZSC) to flow freely in the system. The Zero-Sequence Voltage (ZSV) produced by the two two level Voltage Source Converters (VSCs) and the non-sinusoidal machine back-electro magnetic force (back-EMF) are responsible for the flow of additional current and the reduction of the overall system efficiency. The FCS-MPC is considered for the first time in this application as a simple solution to achieve both machine control and the ZSC suppression simultaneously. The main drawback of the FCS-MPC is the high amount of calculation necessary, here a different formulation of the FCS-MPC is proposed to significantly reduce the computational effort required.