A Simplified Finite-State Predictive Direct Torque Control for Induction Motor Drive

被引:201
作者
Habibullah, Md. [1 ]
Lu, Dylan Dah-Chuan [1 ]
Xiao, Dan [2 ]
Rahman, Muhammed Fazlur [2 ]
机构
[1] Univ Sydney, Sch Elect & Informat Engn, Sydney, NSW 2006, Australia
[2] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
关键词
Average switching frequency; execution time; induction motor (IM); predictive torque control (PTC); simplified algorithm; torque and flux ripple;
D O I
10.1109/TIE.2016.2519327
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Finite-state predictive torque control (FS-PTC) is computationally expensive, since it uses all voltage vectors (VVs) available from a power converter for prediction and actuation. The computational burden is rapidly increased with the number of VVs and objectives to be controlled. Moreover, designing a cost function with more than two control objectives is a complex task. This paper proposes a simplified algorithm based on a new direct torque control (DTC) switching table to reduce the number of VVs to be predicted and objectives to be controlled. The new switching table also assists to reduce average switching frequency and its variation range. As a result, the cost function is simplified by not requiring to include the frequency term. Experimental results show that the average execution time and the average switching frequency for the proposed algorithm are greatly reduced without affecting the torque and flux performances achieved in the conventional FS-PTC.
引用
收藏
页码:3964 / 3975
页数:12
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