An Effective Model-Free Predictive Current Control for Synchronous Reluctance Motor Drives

被引:132
作者
Carlet, Paolo Gherardo [1 ]
Tinazzi, Fabio [2 ]
Bolognani, Silverio [1 ]
Zigliotto, Mauro [2 ]
机构
[1] Univ Padua, Dept Ind Engn, I-35131 Padua, Italy
[2] Univ Padua, Dept Management & Engn, I-36100 Vicenza, Italy
关键词
Model-free; model predictive control (MPC); synchronous reluctance motor (SynRM); variable speed drives; STANDSTILL;
D O I
10.1109/TIA.2019.2910494
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The performances of a model predictive control algorithm largely depend on the knowledge of the system model. A model-free predictive control approach skips all the effects of parameters variations or mismatches, as well as of model nonlinearity and uncertainties. A finite-set model-free current predictive control is proposed in this paper. The current variations predictions induced by the eight base inverter voltage vectors are estimated by means of the previous measurements stored into lookup tables. To keep the current variations information up to date, the three current measurements due to the three most recent feeding voltages are combined together to reconstruct all the others. The reconstruction is performed by taking advantage of the relationships between the three different base voltage vectors involved in the process. In particular, 210 possible combinations of three-state voltage vectors can be found, but they can be gathered together in six different groups. A light and computationally fast algorithm for the group identification is proposed in this paper. Finally, the current reconstruction for the prediction of future steps is thoroughly analyzed. A compensation of the motor rotation effect on the input voltages is proposed, too. The control scheme is evaluated by means of both simulation and experimental evidences on two different synchronous reluctance motors.
引用
收藏
页码:3781 / 3790
页数:10
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