Comparative Analysis of Conventional (CDTC) and Torque Controller Output Manipulated Stator Flux Angle Based Direct Torque Control (TCSF-DTC) of Permanent Magnet Synchronous Motor (PMSM)

Berhanu Deggefa Lemma; Srinivasan Pradabane

doi:10.17485/IJST/v15i2.2276

Article

Comparative Analysis of Conventional (CDTC) and Torque Controller Output Manipulated Stator Flux Angle Based Direct Torque Control (TCSF-DTC) of Permanent Magnet Synchronous Motor (PMSM)

VIEWS 1691
PDF 873

Indian Journal of Science and Technology

DOI: 10.17485/IJST/v15i2.2276

Year: 2021, Volume: 15, Issue: 2, Pages: 54-61

Original Article

Comparative Analysis of Conventional (CDTC) and Torque Controller Output Manipulated Stator Flux Angle Based Direct Torque Control (TCSF-DTC) of Permanent Magnet Synchronous Motor (PMSM)

Berhanu Deggefa Lemma^1*, Srinivasan Pradabane¹

¹Department of Electrical Engineering, National Institute of Technology Warangal, India

*Corresponding Author
Email: [email protected]

Received Date:10 December 2021, Accepted Date:26 December 2021, Published Date:23 January 2021

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objective: It is recommended to use DTC when a quick response time is required. However, the ripple in torque, as well as flux, is the biggest drawback of DTC. This study presents a comparative analysis of two direct torque control methods CDTC and TCSF-DTC for PMSM’s that operate at a constant speed. Method: Matlab 2021b is used to model both CDTC and TCSF-DTC including all switching signals generation. During the simulation, the switching state is chosen to achieve a fast torque and flux response. Finding: A comparison of the two methods was made based on the results of the simulation. In comparison to CDTC, TCSF-DTC uses double-tracking control to manipulate flux values, which minimizes flux ripples. Although the torque performance is similar in both cases, TCSF-DTC has better flux ripple minimization. In both cases, the torque ripple is 2.857%, whereas the flux ripple is 1.879% and 0.1% for CDTC and TCSF-DTC respectively Furthermore, the simulation result for the supply voltage of the motor illustrates improvements in the harmonic distortion and fundamental component magnitudes. Novelty: Flux and torque are controlled independently in DTC, but a PI controller is added for TCSF-DTC. This study compares the performance of CDTC and TCSF-DTC for flux and torque ripple at a constant speed to recommend the control scheme that is suitable for fine torque and flux ripple control. It has been raised in several works that DTC ripples can be reduced, and researchers have recommended several DTC algorithms, including model-predictive DTC, space vector pulse width modulated DTC, and duty ratio optimization. As a result of adding this feature, computational complexity increases. In particular, duty ratio optimization increases computation complexity for slope estimation. The main advantage of this scheme is that it does not increase the complexity of signal processing but it is effective in minimizing flux ripple.

Keywords: Direct torque; flux angle; flux ripple; permanent magnet synchronous motor; torque ripple

References

Bida VM, Samokhvalov DV, Al-Mahturi FS. PMSM vector control techniques — A survey. 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). 2018;p. 577–581. doi: 10.1109/EIConRus.2018.8317164
Xia C, Liu N, Zhou Z, Yan Y, Shi T. Steady-State Performance Improvement for LQR-Based PMSM Drives. IEEE Transactions on Power Electronics. 2018;33(12):10622–10632. doi: 10.1109/tpel.2018.2803760
Li K, Wang Y. Maximum Torque per Ampere (MTPA) Control for IPMSM Drives Using Signal Injection and an MTPA Control Law. IEEE Transactions on Industrial Informatics. 2019;15(10):5588–5598. doi: 10.1109/tii.2019.2905929
Jiang W, Feng S, Zhang Z, Zhang J, Zhang Z. Study of Efficiency Characteristics of Interior Permanent Magnet Synchronous Motors. IEEE Transactions on Magnetics. 2018;54(11):1–5. doi: 10.1109/tmag.2018.2847328
Wang Q, Yu H, Wang M, Qi X. An Improved Sliding Mode Control Using Disturbance Torque Observer for Permanent Magnet Synchronous Motor. IEEE Access. 2019;7:36691–36701. doi: 10.1109/access.2019.2903439
Wu X, Huang W, Lin X, Jiang W, Zhao Y, Zhu S. Direct Torque Control for Induction Motors Based on Minimum Voltage Vector Error. IEEE Transactions on Industrial Electronics. 2021;68(5):3794–3804. doi: 10.1109/tie.2020.2987283
Xue Y, Yu H, Liu X. Improved Fuzzy Backstepping Position Tracking Control for Manipulator Driven by PMSM. 2018 Chinese Automation Congress (CAC). 2018;p. 3561–3565.
Lemma BD, Pradabane S. Control of Permanent-Magnet Synchronous Motors Using Fuzzy Logic Considering Parameter Variation and Diagnostic Capability For Hostile Environment Applications. 2020 IEEE First International Conference on Smart Technologies for Power, Energy and Control (STPEC). 2020;p. 1–4.
Nasr A, Gu C, Wang X, Buticchi G, Bozhko S, Gerada C. Torque-Performance Improvement for Direct Torque-Controlled PMSM Drives Based on Duty-Ratio Regulation. IEEE Transactions on Power Electronics. 2022;37(1):749–760. doi: 10.1109/tpel.2021.3093344
Lemma BD, Pradabane S. Ripple torque lessening in space vector pulse width modulation based direct torque control of permanent magnet synchronous motor drive. Journal of Physics: Conference Series. 2021;1817(1):012027. doi: 10.1088/1742-6596/1817/1/012027

Copyright

© 2022 Lemma & Pradabane. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Published By Indian Society for Education and Environment (iSee)