Reduction of Stator Flux Ripple and Current Harmonic Distortion using Constant Switching Flux Controller-based DTC of Five-Phase Induction Motor
Keywords:
Constant switching flux controller, Direct torque control, Flux ripple, Five-phase induction motor, Harmonic distortion, Hysteresis torque controllerAbstract
A five-phase induction motor's classical hysteresis-based DTC exhibits excellent dynamics and suffers from higher torque and flux ripple, higher current %THD, and variable switching frequencies that vary with speed. In this article, a triangular-based constant switching flux (CSF) controller is introduced in place of the standard hysteresis-based flux controller without altering the hysteresis-based torque controller for implementing the lookup table-based direct torque control of a five-phase induction motor. The proposed DTC scheme improves the average flux ripple and current harmonic distortion for all operating speeds without altering the superior speed and torque dynamic characteristics as that of the classical DTC scheme. The proposed carrier-based CSF controller smoothens the flux pattern and in turn, improves the current profile with suitable duty variations. The proposed DTC forces flux status change at regular intervals which eliminates the drooping of stator flux under very low speeds and light load cases. The hardware and simulation experimental results are analyzed to know the effectiveness of the proposed constant switching flux controller-hysteresis torque controller-based DTC (CSFHTC-DTC) control scheme over the classical hysteresis flux and hysteresis torque controller-based DTC (HFT-DTC) control scheme with the same lookup table.
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‘Multiphase induction motor drives – a technology status review’ E. Levi, R. Bojoi, F. Profumo, H.A. Toliyat and S. Williamson IET Electr. Power Appl., 2007, 1, (4), pp. 489–516
E. Levi, "Multiphase Electric Machines for Variable-Speed Applications," in IEEE Transactions on Industrial Electronics, vol. 55, no. 5, pp. 1893-1909, May 2008, doi: 10.1109/TIE.2008.918488.
N. Bianchi, S. Bolognani and M. Dai Pre, "Strategies for the Fault-Tolerant Current Control of a Five-Phase Permanent-Magnet Motor," in IEEE Transactions on Industry Applications, vol. 43, no. 4, pp. 960-970, July-aug. 2007, doi: 10.1109/TIA.2007.900445.
A. Tani, M. Mengoni, L. Zarri, G. Serra and D. Casadei, "Control of Multiphase Induction Motors With an Odd Number of Phases Under Open-Circuit Phase Faults," in IEEE Transactions on Power Electronics, vol. 27, no. 2, pp. 565-577, Feb. 2012, doi: 10.1109/TPEL.2011.2140334.
M. Mengoni, L. Zarri, A. Tani, L. Parsa, G. Serra, and D. Casadei, "High-Torque-Density Control of Multiphase Induction Motor Drives Operating Over a Wide Speed Range," in IEEE Transactions on Industrial Electronics, vol. 62, no. 2, pp. 814-825, Feb. 2015, doi: 10.1109/TIE.2014.2334662.
S. Williamson and S. Smith, "Pulsating torque and losses in multiphase induction machines," Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248), Chicago, IL, USA, 2001, pp. 1155-1162 vol.2, doi: 10.1109/IAS.2001.955635.
Wang, F.; Zhang, Z.; Mei, X.; Rodríguez, J.; Kennel, R. Advanced Control Strategies of Induction Machine: Field Oriented Control, Direct Torque Control and Model Predictive Control. Energies 2018, 11, 120. https://doi.org/10.3390/en11010120
A. Bhowate, M. V. Aware, and S. Sharma, "Predictive Torque Control Algorithm for a Five-Phase Induction Motor Drive for Reduced Torque Ripple With Switching Frequency Control," in IEEE Transactions on Power Electronics, vol. 35, no. 7, pp. 7282-7294, July 2020, doi: 10.1109/TPEL.2019.2954991.
F. Barrero and M. J. Duran, "Recent Advances in the Design, Modeling, and Control of Multiphase Machines—Part I," in IEEE Transactions on Industrial Electronics, vol. 63, no. 1, pp. 449-458, Jan. 2016, doi: 10.1109/TIE.2015.2447733.
M. J. Duran and F. Barrero, "Recent Advances in the Design, Modeling, and Control of Multiphase Machines—Part II," in IEEE Transactions on Industrial Electronics, vol. 63, no. 1, pp. 459-468, Jan. 2016, doi: 10.1109/TIE.2015.2448211.
A. Baltatanu and M. -L. Florea, "Multiphase machines used in electric vehicles propulsion," Proceedings of the International Conference on ELECTRONICS, COMPUTERS, and ARTIFICIAL INTELLIGENCE - ECAI-2013, 2013, pp. 1-6, doi: 10.1109/ECAI.2013.6636204.
R. Bojoi, M. G. Neacsu, and A. Tenconi, "Analysis and survey of multi-phase power electronic converter topologies for the more electric aircraft applications," International Symposium on Power Electronics, Electrical Drives, Automation and Motion, Sorrento, Italy, 2012, pp. 440-445, doi: 10.1109/SPEEDAM.2012.6264566.
I. Takahashi and T. Noguchi, "A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor," in IEEE Transactions on Industry Applications, vol. IA-22, no. 5, pp. 820-827, Sept. 1986, doi 10.1109/TIA.1986.4504799.
M. Bertoluzzo, G. Buja and R. Menis, "Analytical formulation of the direct control of induction motor drives," ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465), 1999, pp. PS14-PS20 vol.1, doi: 10.1109/ISIE.1999.801745.
V. Ambrozic, G. S. Buja and R. Menis, "Band-constrained technique for direct torque control of induction motor," in IEEE Transactions on Industrial Electronics, vol. 51, no. 4, pp. 776-784, Aug. 2004, doi:10.1109/TIE.2004.831722
A. Iqbal and E. Levi, "Space vector modulation schemes for a five-phase voltage source inverter," 2005 European Conference on Power Electronics and Applications, Dresden, Germany, 2005, pp. 12 pp.-P.12, doi: 10.1109/EPE.2005.219194.
L. Parsa and H. A. Toliyat, "Sensorless Direct Torque Control of Five-Phase Interior Permanent-Magnet Motor Drives," in IEEE Transactions on Industry Applications, vol. 43, no. 4, pp. 952-959, July-aug. 2007, doi: 10.1109/TIA.2007.900444
L. Zheng, J. E. Fletcher, B. W. Williams, and X. He, "A Novel Direct Torque Control Scheme for a Sensorless Five-Phase Induction Motor Drive," in IEEE Transactions on Industrial Electronics, vol. 58, no. 2, pp. 503-513, Feb. 2011, doi: 10.1109/TIE.2010.2047830.
L. Gao, J. E. Fletcher, and L. Zheng, "Low-Speed Control Improvements for a Two-Level Five-Phase Inverter-Fed Induction Machine Using Classic Direct Torque Control," in IEEE Transactions on Industrial Electronics, vol. 58, no. 7, pp. 2744-2754, July 2011, doi: 10.1109/TIE.2010.2070775.
J. A. Riveros, M. J. Durán, F. Barrero and S. Toral, "Direct torque control for five-phase induction motor drives with reduced common-mode voltage," IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, Montreal, QC, Canada, 2012, pp. 3616-3621, doi: 10.1109/IECON.2012.6389317.
S. Payami and R. K. Behera, "An Improved DTC Technique for Low-Speed Operation of a Five-Phase Induction Motor," in IEEE Transactions on Industrial Electronics, vol. 64, no. 5, pp. 3513-3523, May 2017, doi: 10.1109/TIE.2017.2652397.
Y. N. Tatte and M. V. Aware, "Torque Ripple and Harmonic Current Reduction in a Three-Level Inverter-Fed Direct-Torque-Controlled Five-Phase Induction Motor," in IEEE Transactions on Industrial Electronics, vol. 64, no. 7, pp. 5265-5275, July 2017, doi: 10.1109/TIE.2017.2677346.
Yen-Shin Lai and Jian-Ho Chen, "A new approach to direct torque control of induction motor drives for constant inverter switching frequency and torque ripple reduction," in IEEE Transactions on Energy Conversion, vol. 16, no. 3, pp. 220-227, Sept. 2001, doi: 10.1109/60.937200.
Atif Iqbal & Emil Levi (2006) Space Vector PWM Techniques for Sinusoidal Output Voltage Generation with a Five-Phase Voltage Source Inverter, Electric Power Components, and Systems, 34:2, 119-140, DOI: 10.1080/15325000500244427.
N. R. N. Idris and A. H. M. Yatim, "Direct torque control of induction machines with constant switching frequency and reduced torque ripple," in IEEE Transactions on Industrial Electronics, vol. 51, no. 4, pp. 758-767, Aug. 2004, doi: 10.1109/TIE.2004.831718.
G. H. B. Foo and X. Zhang, "Constant Switching Frequency Based Direct Torque Control of Interior Permanent Magnet Synchronous Motors With Reduced Ripples and Fast Torque Dynamics," in IEEE Transactions on Power Electronics, vol. 31, no. 9, pp. 6485-6493, Sept. 2016, doi: 10.1109/TPEL.2015.2503292.
V. S. Reddy and S. Devabhaktuni, "Enhanced Low-Speed characteristics with Constant Switching Torque Controller-based DTC Technique of Five-Phase Induction Motor Drive with FOPI Control," in IEEE Transactions on Industrial Electronics, doi: 10.1109/TIE.2022.3227275.
V. S. R. C and S. Devabhaktuni, "Low-speed Performance improvement of Constant Switching Frequency DTC of Five-Phase Induction Motor," 2021 National Power Electronics Conference (NPEC), Bhubaneswar, India, 2021, pp. 01-06, doi: 10.1109/NPEC52100.2021.9672519.
