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Propulsion, levitation and guidance characteristics are the key technology of electro-dynamic suspension Maglev train. An air-core integrated linear synchronous motor with asymmetric primary combined coils is introduced, which can not only simultaneously realize the propulsion, levitation and guidance performances, but also analyze the electromagnetic performance variation of linear synchronous motor under pitching condition. The novel three-dimensional analytical method is proposed for analyzing the transient electromechanical characteristics of the linear synchronous motor. Firstly, the topology structure and operation principle of the linear synchronous motor with pitching attitude are proposed. Secondly, the three-dimensional analytical methods and expressions of electromechanical characteristics are obtained by equivalent circuit method and Fourier decomposition method, such as levitation force, guidance force, propulsion force and pitching torque, etc. Finally, the three-dimensional electromechanical characteristics of the linear synchronous motor are calculated under pitching operation conditions in high-speed maglev train, and the correctness of the analytical theory is verified by the finite element analysis and measured data of on-board motor. [ABSTRACT FROM AUTHOR]

In this article, an electrodynamic suspension (EDS) maglev scheme with a novel coil topology named traveling magnetic electromagnetic Halbach array (TMEHA) is proposed and investigated in which thrust and lift forces are simultaneously created above a conductive flat guideway. First, the topological structure and principle of the TMEHA-EDS is introduced. Then the effectiveness of the TMEHA is analyzed qualitatively according to the analytic model based on harmonic analytical theory. Third, the 2-D analytical model of the TMEHA-EDS is proposed, and the thrust, lift force, efficiency, and the lift-to-weight ratio of the TMEHA-EDS are analyzed. Finally, a TMEHA-EDS prototype is manufactured, and experiments are carried out to verify the predicted results. [ABSTRACT FROM AUTHOR]