Improved Optimal Duty Model Predictive Current Control Strategy for PMSM

To further improve the steady-state performance of conventional dual vector model predictive current control (MPCC), an improved optimal duty MPCC strategy for permanent magnet synchronous motor (PMSM) is proposed. This realized by selecting voltage combination and its duration from five basic combinations, followed acting on inverter. The combinations are: at previous moment with angle difference 60°; −60°; aforementioned three vectors zero vector. Experimental results indicate that method effectively reduces stator ripple without increasing calculational burden. Furthermore, it improves system altering dynamic system.