Abstract
In order to effectively solve the current problems of magnetic couplers such as large area and complex internal coil, the Halbach array magnetic coupler was proposed. According to the specific characteristics of the hybrid magnetic coupler structure, the mathematical model of air gap magnetic flux density is established by using the combination of electric circuit and electromagnetic field solution. Based on the current superposition, the current is converted to the surface of the copper conductor, and the electromagnetic torque model of the space magnetic field is established by integrating the induced electromotive force along the circumferential direction. In order to verify the correctness of theoretical analysis, the 1:4 prototype was designed and manufactured. Then simulation verification and experiment measurement on its mechanical behaviour are performed. The results show that the maximum error of theoretical value, simulation value and test value is 9.3%. Under the same volume size, the output torque of Halbach array magnetic coupler is increased by 16.1% compared with the ordinary disk magnetic coupler. The research could provide the reference for the design and experimental research of magnetic coupler.
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Acknowledgments
This research work was supported by the National Natural Science Foundation of China (Grant No.51904007), Anhui Provincial Natural Science Foundation (Grant No.1908085QE227, 2008085QE218), Collaborative Innovation Project of Collaborative Tackling of Universities in Anhui Province (Grant No. GXXT-2020-60), Open Foundation of State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine (Grant No. SKLMRDPC20KF10).
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Li, Dy., Wang, S., Guo, Y. et al. Modelling and Experimental Study of Halbach Array Magnetic Coupler. KSCE J Civ Eng 27, 261–269 (2023). https://doi.org/10.1007/s12205-022-1846-y
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DOI: https://doi.org/10.1007/s12205-022-1846-y