Performance Improvement of Servo Control System Driven by Novel PMSM-DTC Based On Fixed Sector Division Criterion

Dazhi Wang, Tianqing Yuan, Xingyu Wang, Xinghua Wang and Yongliang Ni
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Dazhi Wang: School of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Tianqing Yuan: School of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Xingyu Wang: School of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Xinghua Wang: School of Humanities and Law, Northeastern University, Shenyang 110819, China
Yongliang Ni: China North Vehicle Research Institute, Beijing 100072, China

Energies, 2019, vol. 12, issue 11, 1-16

Abstract: In order to improve the performance of the servo control system driven by a permanent magnet synchronous motor (PMSM) under novel direct torque control (NDTC), which, utilizing composite active vectors, fixed sector division criterion, is proposed in this paper. The precondition of the accurate compensations of torque and flux errors is that the sector where the stator flux linkage is located can be determined accurately. Consequently, the adaptive sector division criterion is adopted in NDTC. However, the computation burden is inevitably increased with the using of the adaptive part. On the other hand, the main errors can be compensated through SV-DTC (DTC-utilizing single active vector), while another active vector applied in NDTC can only supply the auxiliary error compensation. The relationships of the two active vectors’ characteristics in NDTC are analyzed in this paper based on the active factor. Furthermore, the fixed sector division criterion is proposed for NDTC (FS-NDTC), which can classify the complexity of the control system. Additionally, the switching table for the selections of the two active vectors is designed. The effectiveness of the proposed FS-NDTC is verified through the experimental results on a 100-W PMSM drive system.

Keywords: servo control system; direct torque control (DTC); permanent magnet synchronous motor (PMSM); fixed sector division criterion; active factors (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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