Characteristics Optimization of the Maglev Train Hybrid Suspension System Using Genetic Algorithm

This paper focuses on the optimal structural design of a hybrid permanent-magnet-electro-magnetic suspension system (PEMS) for a magnetic levitation (Maglev) transportation system in order to decrease the suspension power loss. First, the nonlinear magnetic force expression of a PEMS system is obtai...

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Bibliographic Details
Published in:IEEE transactions on energy conversion 2015-09, Vol.30 (3), p.1163-1170
Main Authors: Safaei, Farhad, Suratgar, Amir Abolfazl, Afshar, Ahmad, Mirsalim, Mojtaba
Format: Article
Language:English
Subjects:
Finite-element-method
genetic algorithm optimization
Genetic algorithms
hybrid magnetic levitation
Iron
Maglev train
Magnetic circuits
Magnetic forces
Magnetic levitation
modeling
Optimization
permanent-magnet (PM)
permanent-magnet-electro-magnetic
Saturation magnetization
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Summary:This paper focuses on the optimal structural design of a hybrid permanent-magnet-electro-magnetic suspension system (PEMS) for a magnetic levitation (Maglev) transportation system in order to decrease the suspension power loss. First, the nonlinear magnetic force expression of a PEMS system is obtained by developing the magnetic equivalent circuit of the hybrid structure. The proposed analytical framework accounts for leakage fluxes and material properties such as iron reluctances. A number of design considerations are also presented to attain more practical results. Genetic algorithm is then employed to optimize the lifting force while reducing the system power loss. Moreover, 3-D finite element method (FEM) is utilized in the analyses and it is shown that the results calculated from the proposed model match well with those obtained from FEM. In addition, superiorities of the implemented model over the existing approaches are demonstrated. The outcomes show that the proposed method has increased the magnetic force, while significantly reducing the suspension power loss compared with those in the conventional pure electromagnet structure and in a previously proposed hybrid structure.
ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2014.2388155