Model-Free Predictive Current Control of Five-Phase PMSM Drives

被引:3
|
作者
Huang, Wentao [1 ]
Huang, Yijia [1 ]
Xu, Dezhi [1 ]
机构
[1] Jiangnan Univ, Sch Internet Things Engn, Wuxi 214122, Peoples R China
关键词
multiphase permanent magnet synchronous motors; ultra-local model; model-free predictive control; space vector modulation;
D O I
10.3390/electronics12234848
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Model predictive control is highly dependent on accurate models and the parameters of electric motor drives. Multiphase permanent magnet synchronous motors (PMSMs) contain nonlinear parameters and mutual cross-coupling dynamics, resulting in challenges in modeling and parameter acquisition. To lessen the parameter dependence of current predictions, a model-free predictive current control (MFPCC) strategy based on an ultra-local model and motor outputs is proposed for five-phase PMSM drives. The ultra-local model is constructed according to the differential equation of current. The inherent relation between the parameters in the predictive current model and the ultra-local model is analyzed in detail. The unknowns of the ultra-local model are estimated using the motor current and voltage at different time instants without requiring motor parameters or observers. Moreover, space vector modulation technology is employed to minimize the voltage tracking error. Finally, simulations and experiments are conducted to verify the effectiveness of the MFPCC with space vector modulation. The results confirm that the proposed method can effectively eliminate the impact of motor parameters and improve steady-state performance. Moreover, this control strategy demonstrates good robustness against load variations.
引用
收藏
页数:16
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