Pivotal Electric System Analysis For Medium-Low Speed Maglev Train

With the features small turning radius, excellent climbing capacity, low noise, no pollution, safety and comfort, the medium-low speed maglev train is considered a very promising transport. And it has received increasing attention. The technologies of suspension and linear motor traction are the proprietary technologies of medium-low speed maglev that is different from the other urban rail systems. Suspension system and traction system are the core system in the medium-low maglev train. In the domestic most studies in medium-low maglev train are focused on some certain key technologies, not on engineering applications of the integration system in medium-low speed maglev with suspension system and traction system. In this paper, the design of suspension system and traction system are researched according to the medium-low maglev train principles and technical characteristics.In the part of suspension system analysis, the principle of medium-low speed maglev suspension system is mentioned. The architecture of vehicle-borne suspension system is designed with the requirement of the vehicle. The suspension electromagnets, sensors and controllers are designed and analyzed according to the required suspension capability.In the part of traction system analysis, the actual requirement of traction system is mentioned. By traction characteristics calculations the characteristic parameters of the linear motor are determined. Based on a typical configuration of medium-low speed maglev traction system, medium-low-speed maglev train traction system structure is designed. In terms of traction control constant slip frequency control technology is analyzed and explained.In the last part, the experiment of a single suspension frame, the suspension experiment of a vehicle and the traction experiment of a vehicle are mentioned. With these experiments the performances and characteristics of traction and suspension are explained. And the design of CSR medium-low-speed maglev train meets the actual requirements.