A new design of a double excitation synchronous machine with L-shaped end-shields
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https://doi.org/10.15625/2525-2518/21391Keywords:
double excitation, flux control, L-shaped coreAbstract
This article proposes a new design for a double excitation synchronous machine. The end-shields with an L-shaped core are introduced to lower the magnetic resistance. The analyses are accomplished by using a three-dimensional finite element method, required by the truly three-dimensional flux paths of the machine. The length of the end shield was varied from 1 mm to 23 mm, and the resulting flux control curves were compared to those of the base model. The design with an end-shield length of 17 mm was chosen as the best compromise. Compared to the base model, this design widens the flux control range from 3.569 mWb to 3.883 mWb (+8.8 %) and increases the slope of the curve in the linear region from 0.367 mWb/A to 0.565 mWb/A (+53.9 %), at the cost of a mass increase from 17.36 kg to 18.16 kg (+4.6 %). The minimum flux achieved was 0.65 mWb at a field current of 4.3 A, instead of 7 A, indicating a significant 62% reduction in field winding copper losses.
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1. Qiao T., Li W., Li Y., Liu W., Zhang J., Chen F. – Design and analysis of series dual-excited synchronous machine for power flow control. In: 2024 7th Asia Conference on Energy and Electrical Engineering (ACEEE). IEEE, (2024) 97–101. https://doi.org/10.1109/aceee62329.2024.10652157.
2. Mörée G., Leijon M. – Overview of hybrid excitation in electrical machines. Energies, 15 (2022) 7254. https://doi.org/10.3390/en15197254.
3. Hou J., Geng W., Zhu T., Zhang Y., Li Q., Zhang Z. – A new hybrid excitation machine with dual-stator single-rotor axial-flux topology for electric vehicle traction application. In: 2021 24th International Conference on Electrical Machines and Systems (ICEMS). IEEE, (2021) 1342–1347. https://doi.org/10.23919/icems52562.2021.9634587.
4. Xu G., Li Q., Wang H., Zhang J., Sun F., Lin J. – A new power flow controller based on dual-excited synchronous machine. IEEE Trans. Ind. Appl., 61 (2025) 5880–5890. https://doi.org/10.1109/tia.2025.3550150.
5. Chu J., Cheng H., Sun J., Peng C., Hu Y. – Multi-objective optimization design of hybrid excitation double stator permanent magnet synchronous machine. IEEE Trans. Energy Convers., 38 (2023) 2364–2375. https://doi.org/10.1109/tec.2023.3279934.
6. Tapia J. A., Leonardi F., Lipo T. A. – Consequent-pole permanent-magnet machine with extended field-weakening capability. IEEE Trans. Ind. Appl., 39 (2003) 1704–1709. https://doi.org/10.1109/tia.2003.818993.
7. Vido L., Gabsi M., Lecrivain M., Amara Y., Chabot F. – Homopolar and bipolar hybrid excitation synchronous machines. In: IEEE International Conference on Electric Machines and Drives, 2005. IEEE, (2005) 1212–1218. https://doi.org/10.1109/iemdc.2005.195876.
8. Nedjar B., Hlioui S., Amara Y., Vido L., Gabsi M., Lecrivain M. – A new parallel double excitation synchronous machine. IEEE Trans. Magn., 47 (2011) 2252–2260. https://doi.org/10.1109/tmag.2011.2134864.
9. Chae Y. S., Jung H., Han J. H., Lee S. H., Quach H. L., Yoon Y. S., Kim H. C., Kim J. H., Kim H. M. – Influence of d-q current on no-insulated high-temperature superconducting magnets for wound-rotor synchronous motors. IEEE Trans. Appl. Supercond., 34 (2024) 1–7. https://doi.org/10.1109/tasc.2024.3353697.
10. Liang K., Chen L., Wang W., Peng T., Chu H., Wu C. – Flux-weakening control strategy for permanent magnet synchronous motor based on maximum torque per ampere using current decomposition method. In: 2025 10th Asia Conference on Power and Electrical Engineering (ACPEE). IEEE, (2025) 1333–1340. https://doi.org/10.1109/acpee64358.2025.11041457.
11. Klink D., Bagnara M. J., Heins G., Bahrani B. – Permanent magnet rotor flux linkage control through direct axis field amplification. IEEE Open J. Ind. Appl., 5 (2024) 369–380. https://doi.org/10.1109/ojia.2024.3430047.
12. Hou J., Geng W., Li Q., Zhang Z. – 3-D equivalent magnetic network modeling and FEA verification of a novel axial-flux hybrid-excitation in-wheel motor. IEEE Trans. Magn., 57 (2021) 1–12. https://doi.org/10.1109/tmag.2021.3081830.
13. Hoang T.-K., Vido L., Gillon F., Gabsi M. – Structural optimization to maximize the flux control range of a double excitation synchronous machine. Math. Comput. Simul., 158 (2019) 235–247. https://doi.org/10.1016/j.matcom.2018.08.013.
14. Hoang K., Vido L., Gabsi M., Gillon F. – Flux control range broadening and torque ripple minimization of a double excitation synchronous motor. IEEE Trans. Magn., 53 (2017) 1–10. https://doi.org/10.1109/tmag.2016.2616330.
15. Dai Y., Zheng Y., Yuan C., Zhang Y., Qiu H. – Influence of dual air gaps on flux–torque regulation hybrid excitation machine with axial–radial magnetic circuit. World Electr. Veh. J., 15 (2024) 430. https://doi.org/10.3390/wevj15090430.
16. Guo M., Xia J., Wu Q., Gao W., Qiu H. – Study on length–diameter ratio of axial–radial flux hybrid excitation machine. Processes, 12 (2024) 2942. https://doi.org/10.3390/pr12122942.
17. Chu K. H., Pou J., Ramakrishna S., Gupta A. K. – Performance of series hybrid excitation synchronous machine in comparison with wound field synchronous machine. In: 2017 Asian Conference on Energy, Power and Transportation Electrification (ACEPT). IEEE, (2017) 1–6. https://doi.org/10.1109/acept.2017.8168616.
18. Wang L., Xing L., Cao Q., Song Y. – Structure principle and classification of hybrid excitation motor. J. Phys. Conf. Ser., 2044 (2021) 012143. https://doi.org/10.1088/1742-6596/2044/1/012143.
19. Hu W., Zhang X., Lei Y., Du Q., Shi L., Liu G. – Analytical model of air-gap field in hybrid excitation and interior permanent magnet machine for electric logistics vehicles. IEEE Access, 8 (2020) 148237–148249. https://doi.org/10.1109/access.2020.3015601.
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