Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Improved duty cycle modulation direct torque control for dual three-phase PMSM with voltage vector online optimization

  • Zhang, Kai (School of Electrical Information Engineering, Jiangsu University) ;
  • Quan, Li (School of Electrical Information Engineering, Jiangsu University) ;
  • Liu, Gai (School of Electrical Information Engineering, Jiangsu University)
  • Received : 2021.07.15
  • Accepted : 2021.11.17
  • Published : 2022.02.20
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Abstract

In this paper, an improved duty cycle modulation direct torque control is proposed for dual three-phase permanent-magnet synchronous machine, which aims to restrain current harmonics and reduce the ripples of torque and flux linkage. First, to restrain the current harmonics, 12 virtual voltage vectors (VVs) are employed as candidate vectors. Then, according to the deviations of torque and flux, the potential voltage vector set can be selected from the 12 virtual VVs. A cost function is employed to determine the optimal VV from the potential vector set. Next, the concept of torque deadbeat is applied to determine the duty cycle of VV and achieve the accurate adjustment of torque and flux linkage. This proposed method effectively reduces the torque and flux ripples and current harmonic. The simple structure of the conventional DTC is retained. The simulation and experimental results verify the effectiveness of the proposed method.

Keywords

References

  1. Li, G., Hu, J., Li, Y., Zhu, J.: An improved model predictive direct torque control strategy for reducing harmonic currents and torque ripples of five-phase permanent magnet synchronous motors. IEEE Trans. Ind. Electron. 66(8), 5820-5829 (2019) https://doi.org/10.1109/tie.2018.2870359
  2. Liu, Z., Zheng, Z., Li, Y.: Enhancing fault-tolerant ability of a nine-phase induction motor drive system using fuzzy logic current controllers. IEEE Trans. Energy Convers. 32(2), 759-769 (2017) https://doi.org/10.1109/TEC.2017.2692528
  3. Goncalves, P.F.C., Cruz, S.M.A., Mendes, A.M.S.: Multistage predictive current control based on virtual vectors for the reduction of current harmonics in six-phase PMSMs. IEEE Trans. Energy Convers. 36(2), 1368-1377 (2021) https://doi.org/10.1109/TEC.2021.3055340
  4. Liu, S., Liu, C.: Virtual-vector-based robust predictive current control for dual three-phase PMSM. IEEE Trans. Ind. Electron. 68(3), 2048-2058 (2021) https://doi.org/10.1109/TIE.2020.2973905
  5. Li, W., Feng, G., Li, Z., Tjong, J., Kar, N.C.: Multireference frame based open-phase fault modeling and control for asymmetrical six-phase interior permanent magnet motors. IEEE Trans. Power Electron. 36(10), 11712-11725 (2021) https://doi.org/10.1109/TPEL.2021.3072947
  6. Zhou, C., Yang, G., Su, J.: PWM strategy with minimum harmonic distortion for dual three-phase permanent-magnet synchronous motor drives operating in the overmodulation region. IEEE Trans. Power Electron. 31(2), 1367-1380 (2016) https://doi.org/10.1109/TPEL.2015.2414437
  7. Foo, G.H.B., Zhang, X.: Constant switching frequency based direct torque control of interior permanent magnet synchronous motors with reduced ripples and fast torque dynamics. IEEE Trans. Power Electron. 31(9), 6485-6493 (2016) https://doi.org/10.1109/TPEL.2015.2503292
  8. Zhang, Y., Zhu, J.: Direct torque control of permanent magnet synchronous motor with reduced torque ripple and commutation frequency. IEEE Trans. Power Electron. 26(1), 235-248 (2011) https://doi.org/10.1109/TPEL.2010.2059047
  9. Xia, C., Wang, S., Wang, Z., Shi, T.: Direct torque control for VSI- PMSMs using four-dimensional switching-sable. IEEE Trans. Power Electron. 31(8), 5774-5785 (2016) https://doi.org/10.1109/TPEL.2015.2498207
  10. Hoang, K.D., Ren, Y., Zhu, Z.Q., Foster, M.: Modifed switching-table strategy for reduction of current harmonics in direct torque controlled dual-three-phase permanent magnet synchronous machine drives. IET Electr. Power Appl. 9(1), 10-19 (2015) https://doi.org/10.1049/iet-epa.2013.0388
  11. Xu, J., Odavic, M., Zhu, Z.Q., Wu, Z.Y., Freire, N.: Switching-table-based direct torque control of dual three-phase PMSMs with closed-loop current harmonics compensation. IEEE Trans. Power Electron. 36(9), 10645-10659 (2021) https://doi.org/10.1109/TPEL.2021.3059973
  12. Shao, B., Zhu, Z.Q., Feng, J.H., Guo, S.Y., Li, Y.F., Feng, L., Shuang, B.: Improved direct torque control method for dual-three-phase permanent-magnet synchronous machines with back EMF harmonics. IEEE Trans. Ind. Electron. 68(10), 9319-9333 (2021) https://doi.org/10.1109/TIE.2020.3026282
  13. Ren, Y., Zhu, Z.Q.: Reduction of both harmonic current and torque ripple for dual three-phase permanent-magnet synchronous machine using modifed switching-table-based direct torque control. IEEE Trans. Ind. Electron. 62(11), 6671-6683 (2015) https://doi.org/10.1109/TIE.2015.2448511
  14. Payami, S., Behera, R.K.: An improved DTC technique for low-speed operation of a five-phase induction motor. IEEE Trans. Ind. Electron. 64(5), 3513-3523 (2017) https://doi.org/10.1109/TIE.2017.2652397
  15. Wang, S., Li, C., Che, C., Xu, D.: Direct torque control for 2L-VSI PMSM using switching instant table. IEEE Trans. Ind. Electron. 65(12), 9410-9420 (2018) https://doi.org/10.1109/tie.2018.2815995
  16. Buja, G.S., Kazmierkowski, M.P.: Direct torque control of PWM inverter-fed AC motors-a survey. IEEE Trans. Ind. Electron. 51(4), 744-757 (2004) https://doi.org/10.1109/TIE.2004.831717
  17. Zhang, Z., Tang, R., Bai, B., Xie, D.: Novel direct torque control based on space vector modulation with adaptive stator flux observer for induction motors. IEEE Trans. Magn. 46(8), 3133-3136 (2010) https://doi.org/10.1109/TMAG.2010.2051142
  18. Zhang, Z., Zhao, Y., Qiao, W., Qu, L.: A space-vector-modulated sensorless direct-torque control for direct-drive PMSG wind turbines. IEEE Trans. Ind. Appl. 50(4), 2331-2341 (2014) https://doi.org/10.1109/TIA.2013.2296618
  19. Zhang, Z., Zhao, Y., Qiao, W., Qu, L.: A discrete-time direct torque control for direct-drive PMSG-based wind energy conversion systems. IEEE Trans. Ind. Appl. 51(4), 3504-3514 (2015) https://doi.org/10.1109/TIA.2015.2413760
  20. Abosh, A.H., Zhu, Z.Q., Ren, Y.: Reduction of torque and flux ripples in space vector modulation-based direct torque control of asymmetric permanent magnet synchronous machine. IEEE Trans. Power Electron. 32(4), 2976-2986 (2017) https://doi.org/10.1109/TPEL.2016.2581026
  21. Niu, F., Li, K., Wang, Y.: Direct torque control for permanent-magnet synchronous machines based on duty ratio modulation. IEEE Trans. Ind. Electron. 62(10), 6160-6170 (2015) https://doi.org/10.1109/TIE.2015.2426678
  22. Niu, F., Huang, X., Ge, L., Zhang, J., Wu, L., Wang, Y., Li, K., Fang, Y.: A simple and practical duty cycle modulated direct torque control for permanent magnet synchronous motors. IEEE Trans. Power Electron. 34(2), 1572-1579 (2019) https://doi.org/10.1109/tpel.2018.2833488
  23. Lin, X., Huang, W., Jiang, W., Zhao, Y., Zhu, S.: Deadbeat direct torque and flux control for permanent magnet synchronous motor based on stator flux oriented. IEEE Trans. Power Electron. 35(5), 5078-5092 (2020) https://doi.org/10.1109/tpel.2019.2946738
  24. Ren, Y., Zhu, Z.Q., Liu, J.: Direct torque control of permanent-magnet synchronous machine drives with a simple duty ratio regulator. IEEE Trans. Ind. Electron. 61(10), 5249-5258 (2014) https://doi.org/10.1109/TIE.2014.2300070
  25. Zhang, Y., Yang, H.: Model predictive torque control of induction motor drives with optimal duty cycle control. IEEE Trans. Power Electron. 29(12), 6593-6603 (2014) https://doi.org/10.1109/TPEL.2014.2302838
  26. Li, X., Xue, Z., Yan, X., Zhang, L., Ma, W., Hua, W.: Low-complexity multivector-based model predictive torque control for PMSM with voltage preselection. IEEE Trans. Power Electron. 36(10), 11726-11738 (2021) https://doi.org/10.1109/TPEL.2021.3073137
  27. Cao, B., Grainger, B.M., Wang, X., Zou, Y., Reed, G.F., Mao, Z.-H.: Direct torque model predictive control of a five-phase permanent magnet synchronous motor. IEEE Trans. Power Electron. 36(2), 2346-2360 (2021) https://doi.org/10.1109/tpel.2020.3011312
  28. Wang, W., Liu, C., Liu, S., Zhao, H.: Model predictive torque control for dual three-phase PMSMs with simplified deadbeat solution and discrete space-vector modulation. IEEE Trans. Energy Convers. 36(2), 1491-1499 (2021) https://doi.org/10.1109/TEC.2021.3052132