Model Predictive Current Control of Double Permanent Magnet Vernier Motor for New Energy Agricultural Machinery
Modular dual permanent magnet vernier machine incorporate the merits of high torque density and low iron loss,suitable for low-speed high-torque applications.Due to high torque ripples,high current harmonics and high speed fluctuations in control system of modular dual permanent magnet machine for new energy tractor,an improved model predictive current control strategy is proposed.Compared with con-ventional model predictive current control,mode predictive current control based on dual vector is adopted in proposed strategy,double arbi-trary voltage vector can be selected to operate simultaneously in each control cycle that extends selection range of voltage vector and adjustment range of amplitude,which can realize more accurate current control.Meanwhile,considering system delay,current delay compensation is add-ed to predictive control.The simulation results showed that proposed control strategy can effectively reduce torque ripples,current harmonics and speed fluctuations,thus improving control performance of the system.
万方数据
维普
