An Improved Model Predictive Voltage Control for PMSM Drives without Motor Parameters

Abstract

To address the performance degradation of permanent magnet synchronous motor (PMSM) drives caused by parameter mismatches between actual motor and ideal model in complex industrial environment, an improved model predictive voltage control (I-MPVC) approach without motor parameters is presented in this article. Unlike traditional MPVC where accurate motor parameters are heavily relied on, a motor parameter-independent (MPI) prediction model is constructed to eliminate parameter dependency. Firstly, an incremental voltage prediction model is developed where the influence of resistance and flux linkage mismatches is reduced. Then, an inductance parameter-independent (IPI) factor model, which solely relies on the current and voltage information, is further designed. Besides, the proposed approach takes lower computational complexity, as well as simpler parameter tuning steps, which offers significant benefits for real-time applications in industrial fields. Finally, experiments are conducted to validate the feasibility and superiority of the proposed approach.