Abstract
In this paper, the reluctance torque is utilized for improving the starting and average torques of a conventional brushless wound field synchronous machine (BL-WFSM). The conventional BL-WFSMs have an inherent issue of zero-starting torque. The existing BL topologies use expensive rare-earth permanent magnets (RE-PMs) to improve the starting torque; however, the marker price of RE-PMs fluctuates. Therefore, this paper proposes the use of the reluctance torque for improving the starting and average torques of BL-WFSMs. The winding topology and machine layout are adopted, from recently published work. The suggested approach increases the reluctance effect in BL-WFSM by optimizing the rotor shape. The reluctance effect is optimized, to improve the starting and average torques. The Kriging method and a genetic algorithm are used for the rotor optimization. A two-dimensional finite element analysis confirms the improved starting and average torques based on the increase in the reluctance torque.
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References
Amara YC, Vido L, Gabsiet M et al (2009) Hybrid excitation synchronous machines: energy-efficient solution for vehicle propulsion. IEEE Trans Veh Technol 58(5):2137–2149
Chu KH, Pou J, Ramakrishna S, Gupta AK (2017) 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), Singapore, pp. 1–6
Legranger J, Friedrich G, Vivier S, Mipo JC (2010) Combination of finite-element and analytical models in the optimal multi domain design of machines: application to an interior permanent-magnet starter generator. IEEE Trans Ind Appl 46(1):232–239
Duan Y, Ionel DM (2013) A review of recent developments in electrical machine design optimization methods with a permanent-magnet synchronous motor benchmark study. IEEE Trans Ind Appl 49(3):1268–1275
Alotto P, Barcaro M, Bianchi N, Guarnieri M (2011) Optimization of interior PM motors with mechanic rotor flux barriers. IEEE Trans Magn 47(5):958–961
Hur J, Reu JW, Kim BW, Kang GH (2011) Vibration reduction of IPM-type BLDC motor using negative 3rd harmonic limitation method of air-gap flux density. IEEE Trans Ind Appl 47(3):1300–1309
Wang Y, Luo R, Zheng Y (1978) The analysis of harmonic excitation on turbo generator. J Zhejiang Univ 1:91–114
Jawad G, Ali Q, Lipo TA, Kwon BI (2016) Novel brushless wound rotor synchronous machine with zero-sequence third-harmonic field excitation. IEEE Trans Magn 52(7):1–4
Yao F, An Q, Gao X, Sun L, Lipo TA (2015) Principle of operation and performance of a synchronous machine employing a new harmonic excitation scheme. IEEE Trans Ind Appl 51(5):3890–3898
Ayub M, Atiq S, Sirewal GJ, Kwon B (2019) Fault-tolerant operation of wound field synchronous machine using coil switching. IEEE Access 7:67130–67138. https://doi.org/10.1109/ACCESS.2019.2918504
Ayub M, Hussain A, Jawad G, Kwon B (2019) Brushless operation of a wound-field synchronous machine using a novel winding scheme. IEEE Transactions on Magnetics. https://doi.org/10.1109/TMAG.2019.2893883
Ali Q, Atiq S, Lipo TA, Kwon BI (2016) PM assisted, brushless wound rotor synchronous machine. J Magn 21(3):399–404
Ayub M, Jawad G, Kwon B (2019) Consequent-pole hybrid excitation brushless wound field synchronous machine with fractional slot concentrated winding. IEEE Trans Magn 55(7):1–5. https://doi.org/10.1109/TMAG.2018.2890509
Hwang S, Sim J, Hong J, Lee J, Kim J (2016) Torque improvement of wound field synchronous motor for electric vehicle by PM-assist. In: 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, pp. 1–6
Fukami T, Matsui Y, Hayamizu T, Shima K, Hanaoka R, Takata S (2008) Steady-state analysis of a permanent-magnet-assisted salient-pole synchronous generator. In: 2008 18th International Conference on Electrical Machines, Vilamoura, pp. 1–6
Liu W, Lipo TA (2016) On saliency enhancement of salient pole wound field synchronous machines. In: 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, pp. 1–8
Chai W, Zhao W, Kwon B (2017) Optimal Design of Wound Field Synchronous Reluctance Machines to Improve Torque by Increasing the Saliency Ratio. IEEE Trans Magn 53(11):1–4. https://doi.org/10.1109/TMAG.2017.2707459
PIAnO outline [Online]. http://www.pidotech.com/en/product/PIAnO.aspx. Accessed August 2019
Acknowledgement
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20174030201780), and in part by the BK21PLUS Program through the National Research Foundation of Korea within the Ministry of Education.
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Ayub, M., Bukhari, S.S.H., Jawad, G. et al. Utilization of reluctance torque for improvement of the starting and average torques of a brushless wound field synchronous machine. Electr Eng 103, 2327–2333 (2021). https://doi.org/10.1007/s00202-020-01174-5
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DOI: https://doi.org/10.1007/s00202-020-01174-5