Cost function tuning methodology for FCS-MPC applied to PMSM drives

Abstract

This paper presents a discussion about cost function design procedure for finite control set model predictive control (FCS-MPC) applied to electrical permanent magnet synchronous motor (PMSM) drive. In such analysis, different cost function choices were evaluated, with different type of costs and weighting, in order to achieve the main control objective: minimum torque error, accomplishing the maximum torque per ampere condition. Moreover, this study is completed with discussion on the choice of weighted variables for each objective and its influence in some figures of merit, such as current THD and torque ripple.