关键词: 内置式永磁同步电机, 开关次数控制, 模型预测电流控制, 实时性能

Abstract: In order to decrease the high calculation burden of model predictive current control ( MPCC) for interior permanent magnet synchronous motor ( IPMSM) ,simplified control sets are proposed in this paper to reduce traversal times while maintaining control performance. The MPCC model for IPMSM that considers switching times control is established. The effect of switching times control on the voltage vector selection principle is analyzed,and based on this principle,three simplified control sets are presented by eliminating voltage vectors with low utilization ratios. Three simplified control sets decares traversal times of conventional control set from 7 to 6, 3 and 2 at most, respectively. Simulation and real-time
experimental results show simplified control sets can decrease calculation burden and have little effort on control performance. Switching times control has little effect on voltage vector selection principle of current control. For the MPCC of IPMSM considering switching frequency control,it generally avoids selecting voltage vectors where the polarity of stator d-qaxis voltages ( ud,uq) is completely opposite to the required increase / decrease direction of stator d-q-axis currents adirection dictated by the currents ’ error polarity. Moreover, in most cases, it selects voltage vectors where their polarityexactly matches this required direction,plus the zero voltage vector.

Key words: interior permanent magnet synchronous motor, switching times control, model predictive current control, real-time performance