An improved finite-state predictive torque control for switched reluctance motor drive

作者：Li, Cunhe; Wang, Guofeng^*; Li, Yan; Xu, Aide

来源：IET Electric Power Applications, 2018, 12(1): 144-151.

DOI：10.1049/iet-epa.2017.0268

• reluctance motor drives
• predictive control
• torque control
• discrete time systems
• machine control
• improved finite-state predictive torque control
• switched reluctance motor drive
• FS-PTC method
• analytical method
• discrete time model
• torque ripple minimisation
• switching table
• sector partition technique
• copper losses
• average switching frequency
• multiobjective cost function
• three phase 12
• 8 poles SRM
• conventional direct instantaneous torque control algorithm

This study proposes an improved finite-state predictive torque control (FS-PTC) to minimise the torque ripples of switched reluctance motor (SRM) drive. Firstly, based on the accurate analytical method, a discrete time model is established for predicting the future states of SRM drive system. Secondly, to reduce the computational burden, a new switching table is constructed for the predictive controller by using the sector partition technique. Further, the torque ripple, copper losses, and average switching frequency are considered synchronously by using a multi-objective cost function. As a result, the proposed FS-PTC method not only can minimise the torque ripple but also can reduce effectively the copper losses and average switching frequency. Finally, the experimental results are carried out for a three phase 12/8 poles 1.5kW SRM with the proposed control algorithm and the results are compared with conventional direct instantaneous torque control algorithm. These results demonstrate the effectiveness of the proposed method.

• 出版日期2018-1
• 单位大连海事大学