Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Artificial neural network controller for grid current quality improvement in solid-state transformers

  • Nassim Zemirline (Department of Electrical Engineering, Laboratory of Electrical Engineering and Automation, Yahia Fares University) ;
  • Nadir Kabeche (Department of Electrical Engineering, Laboratory of Electrical Engineering and Automation, Yahia Fares University) ;
  • Samir Moulahoum (Department of Electrical Engineering, Laboratory of Electrical Engineering and Automation, Yahia Fares University)
  • Received : 2023.07.09
  • Accepted : 2023.12.22
  • Published : 2024.05.20
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Abstract

In this paper, an improved modular multilevel converter (MMC) current controller is proposed for grid current harmonic mitigation in solid-state transformers (SSTs), regardless of the non-linear or unbalanced load positions at the SST stages. The proposed MMC current controller is achieved using three control strategies based on the harmonic order and the harmonic sequence: a low-order harmonic compensator, a negative-sequence harmonic compensator for unbalanced control, and a high-order harmonic compensator based on an artificial neural network (ANN) controller, trained offline using a fuzzy logic (FL) controller. The use of such non-linear controllers for both training and control ensures an active filtering feature for the MMC controller. This makes the proposed solution a good alternative to solutions based on extra filters or an increased switching frequency, which inevitably increases the system costs and losses. The proposed control strategy is implemented and evaluated in MATLAB/Simulink software under various load conditions and parameter changes, and results from multiple simulations are presented.

Keywords

References

  1. Madi, A.I., Hamad, M.S., Hamdy, R.A.R., El-Arabawy, I.F.: Hybrid active power filter with modular multilevel converter. Proc. 2017 Nineteenth International Middle East Power Systems Conference (MEPCON), 1100-1105 (2017) 
  2. Li, Y., Li, Y., Han, J., Tan, Y., Cai, Y., Jiang, Y.: A mmc-sst based power quality improvement method for the medium and high voltage distribution network. Proc. 2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), 1-5 (2016) 
  3. Gorla, N.B.Y., Kolluri, S., Chai, M., Panda, S.K.: A comprehensive harmonic analysis and control strategy for improved input power quality in a cascaded modular solid state transformer. IEEE Trans. Power Elec. 34(7), 6219-6232 (2019)  https://doi.org/10.1109/TPEL.2018.2873201
  4. Khan, S., Rahman, K., Tariq, M., Hameed, S., Alamri, B., Babu, T.S.: Solid-state transformers: fundamentals, topologies, applications, and future challenges. Sustainability. 14(1), 319 (2022) 
  5. Huang, M., Kang, Z., Li, W., Zou, J., Ma, X., Li, J.: Modified modular multilevel converter with third-order harmonic voltage injection to reduce submodule capacitor voltage ripples. IEEE Trans. Power Electron. 36(6), 7074-7086 (2021)  https://doi.org/10.1109/TPEL.2020.3035286
  6. Qu, Z., Yao, Y., Wang, Y., Zhang, C., Chong, Z., Abu-Siada, A.: A novel unbalance compensation method for distribution solid-state transformer based on reduced order generalized integrator. IEEE Access 7, 108593-108603 (2019)  https://doi.org/10.1109/ACCESS.2019.2933414
  7. Li, Y., Sun, Q., Qin, D., Cheng, K., Li, Z.: Power control of a modular three-port solid-state transformer with three-phase unbalance regulation capabilities. IEEE Access 8, 72859-72869 (2020)  https://doi.org/10.1109/ACCESS.2020.2987075
  8. Duan, Q., Zhao, C.: Improved vsg controlled sst in a low-voltage ac distribution network. Proc. 2021 IEEE Sustainable Power and Energy Conference (iSPEC), 428-435 (2021) 
  9. Khodaparast, A., Erfan, A., Azimi, A., Adabi, M.E., Adabi, J., Pouresmaeil, E.: A new modular multilevel inverter based on step-up switched-capacitor modules. Energies 12(3), 524 (2019) 
  10. Cheng, Q., Chenchen, W., Jian, W.: Analysis on displacement angle of phase-shifted carrier pwm for modular multilevel converter. Energies 13(24), 6743 (2020) 
  11. Li, B., Yang, R., Xu, D., Wang, G., Wang, W., Xu, D.: Analysis of the phase-shifted carrier modulation for modular multilevel converters. IEEE Trans. Power Electron. 30(1), 297-310 (2015)  https://doi.org/10.1109/TPEL.2014.2299802
  12. Cho, S., Kang, H.-S., Lee, K.-B., Yoo, J.-Y.: Performance improvement of a grid-connected inverter under distorted grid voltage using a harmonic extractor. Electronics 8(9), 1038 (2019) 
  13. Lai, N.B., Kim, K.-H.: An improved current control strategy for a grid-connected inverter under distorted grid conditions. Energies 9(3), 190 (2016) 
  14. Debnath, S., Qin, J., Bahrani, B., Saeedifard, M., Barbosa, P.: Operation, control, and applications of the modular multilevel converter: A review. IEEE Trans. on Power Electron. 30(1), 37-53 (2015)  https://doi.org/10.1109/TPEL.2014.2309937
  15. Kouro, S., Malinowski, M., Gopakumar, K., Pou, J., Franquelo, L.G., Wu, B., Rodriguez, J., Perez, M.A., Leon, J.I.: Recent advances and industrial applications of multilevel converters. IEEE Trans. Ind. Electron. 57(8), 2553-2580 (2010)  https://doi.org/10.1109/TIE.2010.2049719
  16. Wang, Y., Aksoz, A., Geury, T., Ozturk, S.B., Kivanc, O.C., Hegazy, O.: A review of modular multilevel converters for stationary applications. Appl. Sci. 10(21), 7719 (2020) 
  17. Qiming, C., Fengren, T., Jie, G., Yu, Z., Deqing, Y.: The separation of positive and negative sequence component based on sogi and cascade dsc and its application at unbalanced pwm rectifier. Proc. 2017 29th Chinese Control And Decision Conference (CCDC), 5804-5808 (2017) 
  18. Khan, H.S., Mohamed, I.S., Kauhaniemi, K., Liu, L.: Artificial neural network-based voltage control of dc/dc converter for dc microgrid applications. Proc. 2021 6th IEEE Workshop on the Electronic Grid (eGRID), 1-6 (2021) 
  19. Chen, J.H., Tan, K.H., Lee, Y.D.: Intelligent controlled dstatcom for power quality enhancement. Energies 15(11), 4017 (2022) 
  20. Agrawal, S., Palwalia, D.K., Kumar, M.: Performance analysis of ann based three-phase four-wire shunt active power filter for harmonic mitigation under distorted supply voltage conditions. IETE J. Res. 68(1), 566-574 (2022)  https://doi.org/10.1080/03772063.2019.1617198
  21. Bakeer, A., Alhasheem, M., Peyghami, S.: Efficient fixed-switching modulated finite control set-model predictive control based on artificial neural networks. Appl. Sci. 12(6), 3134 (2022) 
  22. Lee, H.-Y., Lee, J.-l., Kwon, S.-O., Lee, S.-W.: Performance estimation of induction motor using artificial neural network. Proc. 2018 25th International Conference on Systems, Signals and Image Processing (IWSSIP), 1-3 (2018)