Long Stator Linear Doubly-Fed Motor for High-Speed Maglev Integrated Suspension, Propulsion and Contactless Power Supply

The power rails for onboard power supply are needed for TR high-speed maglev based on liner synchronous motor, which bring up the cost increase and decrease of reliability. Aiming to realize the contactless onboard power supply at low cost, a maglev based on Long Stator Linear Doubly-Fed Motor (LDFM) is proposed in this paper, which can integrate the contactless onboard power supply, suspension and propulsion force generation together. The structure, principle and the decoupled control strategy of the LDFM based maglev is presented. The 2D Finite Element Method (FEM) results verify the effectiveness of the proposed prototype.