- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
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| Citation: | HU Yongpan, ZENG Jiewei, WANG Zhiqiang, LONG Zhiqiang. Performance Optimization of Ultra-High Speed Permanent Magnet Electrodynamic Suspension System[J]. Journal of Southwest Jiaotong University, 2023, 58(4): 773-782. doi: 10.3969/j.issn.0258-2724.20220856
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In order to improve the overall performance of the ultra-high speed permanent magnet electrodynamic suspension system, multi-objective performance optimization was carried out based on three important indexes: lift-to-weight ratio, lift-to-drag ratio, and suspension stiffness. Firstly, the transverse continuation of the permanent magnet electrodynamic suspension system was carried out, and a three-dimensional electromagnetic force model was derived. In addition, the finite element simulation was performed. Then, in view of the multi-objective optimization problem involving lift-to-weight ratio, lift-to-drag ratio, and suspension stiffness, a parallel optimization strategy based on “system + subsystem” architecture was proposed to obtain the optimal system performance in the sense of linear weighting. Finally, the experimental platform of “Halbach permanent magnet array + flanged aluminum turntable” was built, which demonstrated the effectiveness of the above optimization strategy in improving system performance. Research results show that the suspension force error between theoretical analysis and simulation results is less than 8%, and the error of magnetic resistance is little. By optimization design, the lift-to-weight ratio is increased by 75.50% from 11.0 to 18.3; the lift-drag ratio is increased by 7.50% from 3.5 to 3.8; the suspension stiffness of the unit mass permanent magnet array is increased by 235.94% from 6.1 kN/m to 20.6 kN/m.
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