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Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation

Received: 10 September 2021    Accepted: 5 October 2021    Published: 15 October 2021
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Abstract

This paper presents an approach to minimize the electromagnetic torque ripple of a synchronous reluctance generator (SynRG) with a magnetic field created by externally excited rotor coils. The synchronous reluctance machine is widely used in low and medium power systems such as wind power generation and new electric vehicle technologies. This paper proposes a rotor topology with flux barriers and direct current excited coils that reduce the torque ripple and replace the permanent magnets used in other reluctance rotor topologies. First, the initial rotor design, without excitation coils, is optimized to obtain a new rotor structure that reduces the electromagnetic torque ripple. In this work, the optimization of the rotor geometry was achieved by using genetic algorithms and the finite element method to optimize and parameterize the main components of the machine. In the optimized rotor model, an external electronic converter is included to feed the coils positioned between the magnetic flux barriers and the segments formed by the ferromagnetic material of the rotor. Finally, the electrical and magnetic machine variables obtained from implementing the coils into the optimized rotor are compared to the initial rotor structure operating under nominal load conditions to demonstrate the advantage of this topology in minimizing the electromagnetic torque ripple.

Published in International Journal of Electrical Components and Energy Conversion (Volume 7, Issue 2)
DOI 10.11648/j.ijecec.20210702.12
Page(s) 42-47
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Externally Excited Coils, Optimized Rotor, Synchronous Reluctance Generator

References
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[2] Muteba, M., Twala, B., & Nicolae, D. V. (2016). Torque ripple minimization in synchronous reluctance motor using a sinusoidal rotor lamination shape, XXII IEEE International Conference on Electrical Machines (ICEM), 606-611.
[3] Okamoto, Y., Hoshino, R., Wakao, S., & Tsuburaya, T. (2018). Improvement of Torque Characteristics For a Synchronous Reluctance Motor Using MMA-based Topology Optimization Method, IEEE Transactions on Magnetics, 54 (3): 1–4.
[4] Raj, M. A., & Kavitha, A. (2017). Effect of Rotor Geometry on Peak and Average Torque of External-Rotor Synchronous Reluctance Motor in Comparison With Switched Reluctance Motor for Low- Speed Direct-Drive Domestic Application, IEEE Transactions on Magnetics, 53 (11): 1–8.
[5] Zhang, G., Yu, W., Hua, W., Cao, R., Qiu, H., & Guo, A. (2019). The Design and Optimization of an Interior, Permanent Magnet Synchronous Machine Applied in an Electric Traction Vehicle Requiring a Low Torque Ripple. Applied Sciences, 9, 3634.
[6] Hua, Y., Zhu, H., Gao, M., & Ji, Z. (2021). Design and Analysis of Two Permanent-Magnet-Assisted Bearingless Synchronous Reluctance Motors with Different Rotor Structure. Energies, 14, 879.
[7] You, Y., & Yoon, K. (2021). Multi-Objective Optimization of Permanent Magnet Synchronous Motor for Electric Vehicle Considering Demagnetization. Applied Sciences, 11, 2159.
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[9] Hu, W., Zhang, X., Yin, H., Geng, H., Zhang, Y., & Shi, L. (2020). Analysis of Magnetic Field and Electromagnetic Performance of a New Hybrid Excitation Synchronous Motor with dual-V type Magnets. Energies. 13, 1501.
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[12] Fernandez, S. A., Prieto, D., Vannier, J., Manfe, P., & Saint-Michel, J. (2015). Electromagnetic analysis of a wound-field generator with flux-barrier rotor for AC generator sets. IEEE International Electric Machines & Drives Conference (IEMDC). 273-279.
[13] Howard, E., & Kamper, M. J. (2017) Reluctance synchronous wind generator design optimisation in the megawatt, medium speed range. IEEE Energy Conversion Congress and Exposition (ECCE). 1864-1871.
[14] Zagirnyak, M. V., Maga, D., & Miljavec, D. (2011). Genetic algorithms in design of a synchronous reluctance motor. 14th International Conference Mechatronika. 25-30.
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[16] Moghaddam, R., & Gyllensten, F. (2014). Novel High-Performance SynRM Design Method: An Easy Approach for A Complicated Rotor Topology. IEEE Trans. Ind. Electron. 61 (9): 5058-5065.
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Cite This Article
  • APA Style

    Jesus Gonzalez, Concepcion Hernandez, Marco Arjona. (2021). Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation. International Journal of Electrical Components and Energy Conversion, 7(2), 42-47. https://doi.org/10.11648/j.ijecec.20210702.12

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    ACS Style

    Jesus Gonzalez; Concepcion Hernandez; Marco Arjona. Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation. Int. J. Electr. Compon. Energy Convers. 2021, 7(2), 42-47. doi: 10.11648/j.ijecec.20210702.12

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    AMA Style

    Jesus Gonzalez, Concepcion Hernandez, Marco Arjona. Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation. Int J Electr Compon Energy Convers. 2021;7(2):42-47. doi: 10.11648/j.ijecec.20210702.12

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  • @article{10.11648/j.ijecec.20210702.12,
      author = {Jesus Gonzalez and Concepcion Hernandez and Marco Arjona},
      title = {Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation},
      journal = {International Journal of Electrical Components and Energy Conversion},
      volume = {7},
      number = {2},
      pages = {42-47},
      doi = {10.11648/j.ijecec.20210702.12},
      url = {https://doi.org/10.11648/j.ijecec.20210702.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijecec.20210702.12},
      abstract = {This paper presents an approach to minimize the electromagnetic torque ripple of a synchronous reluctance generator (SynRG) with a magnetic field created by externally excited rotor coils. The synchronous reluctance machine is widely used in low and medium power systems such as wind power generation and new electric vehicle technologies. This paper proposes a rotor topology with flux barriers and direct current excited coils that reduce the torque ripple and replace the permanent magnets used in other reluctance rotor topologies. First, the initial rotor design, without excitation coils, is optimized to obtain a new rotor structure that reduces the electromagnetic torque ripple. In this work, the optimization of the rotor geometry was achieved by using genetic algorithms and the finite element method to optimize and parameterize the main components of the machine. In the optimized rotor model, an external electronic converter is included to feed the coils positioned between the magnetic flux barriers and the segments formed by the ferromagnetic material of the rotor. Finally, the electrical and magnetic machine variables obtained from implementing the coils into the optimized rotor are compared to the initial rotor structure operating under nominal load conditions to demonstrate the advantage of this topology in minimizing the electromagnetic torque ripple.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Minimization of the Electromagnetic Torque Ripple of a Synchronous Reluctance Generator Using External Rotor Excitation
    AU  - Jesus Gonzalez
    AU  - Concepcion Hernandez
    AU  - Marco Arjona
    Y1  - 2021/10/15
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ijecec.20210702.12
    DO  - 10.11648/j.ijecec.20210702.12
    T2  - International Journal of Electrical Components and Energy Conversion
    JF  - International Journal of Electrical Components and Energy Conversion
    JO  - International Journal of Electrical Components and Energy Conversion
    SP  - 42
    EP  - 47
    PB  - Science Publishing Group
    SN  - 2469-8059
    UR  - https://doi.org/10.11648/j.ijecec.20210702.12
    AB  - This paper presents an approach to minimize the electromagnetic torque ripple of a synchronous reluctance generator (SynRG) with a magnetic field created by externally excited rotor coils. The synchronous reluctance machine is widely used in low and medium power systems such as wind power generation and new electric vehicle technologies. This paper proposes a rotor topology with flux barriers and direct current excited coils that reduce the torque ripple and replace the permanent magnets used in other reluctance rotor topologies. First, the initial rotor design, without excitation coils, is optimized to obtain a new rotor structure that reduces the electromagnetic torque ripple. In this work, the optimization of the rotor geometry was achieved by using genetic algorithms and the finite element method to optimize and parameterize the main components of the machine. In the optimized rotor model, an external electronic converter is included to feed the coils positioned between the magnetic flux barriers and the segments formed by the ferromagnetic material of the rotor. Finally, the electrical and magnetic machine variables obtained from implementing the coils into the optimized rotor are compared to the initial rotor structure operating under nominal load conditions to demonstrate the advantage of this topology in minimizing the electromagnetic torque ripple.
    VL  - 7
    IS  - 2
    ER  - 

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Author Information
  • Graduate and Research Center, National Technology Institute of Mexico Campus La Laguna, Torreon, Mexico

  • Graduate and Research Center, National Technology Institute of Mexico Campus La Laguna, Torreon, Mexico

  • Graduate and Research Center, National Technology Institute of Mexico Campus La Laguna, Torreon, Mexico

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