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.