Predictive current control for SynRM drives under low dc link voltage

Abstract

Although it has an excellent steady performance, traditional proportion integration (PI) current control still needs PI parameters tuning, which is a time-consuming. In addition, because there are no permanent magnets in synchronous reluctance motor (SynRM) drives, the large stator inductance will affect the stator current variation, which actually limits the response of the current controller. This problem gets worse if dc link of an inverter is low. To deal with these problems, other current control strategies for SynRM will be introduced, namely deadbeat predictive current control (DPCC) and model predictive current control (MPCC). In addition, this paper analyzes the advantages and drawback about the PI current control and predictive control in SynRM drives. Simulation results are demonstrated to verify the effectiveness of the four control strategies.