Discussion on Control Methods with Finite-Control-Set Concept for PMSM Drives

This work closely investigates the generalized relationship among the four popular control methods using Finite-Control-Set Model Predictive Control (FCS-MPC)concept for voltage source power converter fed PMSM drivers. The as-investigated control methods include: direct model predictive torque control (DMPTC)in $dq$ frame, direct model predictive current control (DMPCC)in $dq$ frame, direct model predictive current control (DMPCC)in $\alpha\beta$ frame and direct model predictive flux control (DMPFC)in $\alpha\beta$ frame. Our conclusion is that, for nonsaliency based PMSM, DMPTC, DMPCC (both in $\alpha\beta$ and $dq$ frames), DMPFC are theoretically equivalent in achieving the control targets. However, realization effort and computational demands, i.e., the amount calculation required, are different.