Paper Info
Title
Optimization of Torque Tracking Performance for Direct-Torque-Controlled PMSM Drives With Composite Torque Regulator
Abstract
In this article, a composite torque regulator is proposed for optimizing the torque tracking performance in direct torque-controlled permanent-magnet synchronous motor drives. In the proposed composite torque regulator, two new variable hysteresis bands are designed and combined with two constant hysteresis bands. In the conventional direct torque control (DTC) scheme, the torque increasing rate and decreasing rate are changed with different speeds and loads. Thus, the average torque will deviate the reference torque seriously under some operation states. With torque deviation, the reference torque can hardly reflect the actual electromagnetic torque, and the torque tracking becomes more difficult and unsatisfactory in dynamic process. On the other hand, the time delay of one sampling period further deteriorates the precision of torque tracking. By introducing the proposed composite torque regulator, both torque deviation and the impact of time delay on the torque ripple can be eliminated. In addition, the advantages of the conventional DTC scheme, namely low switching frequency, fast dynamic response, simple structure, and independence of motor parameters, can be reserved in the proposed DTC scheme with a composite torque regulator. Experimental results are presented to verify the effectiveness of the proposed scheme and compare its performance with the conventional DTC scheme.
Year
DOI
Venue
2020
10.1109/TIE.2019.2962451
IEEE Transactions on Industrial Electronics
Keywords
DocType
Volume
Composite torque regulator,direct torque control (DTC),permanent-magnet synchronous motor (PMSM) drive,torque tracking,variable hysteresis bands
Journal
67
Issue
ISSN
Citations 
12
0278-0046
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Xueqing Wang11196.45
Zheng Wang265.24
Zhixian Xu300.34
Ming Cheng45918.72
Yihua Hu584.28