Francesco Crisi

Design and Optimization of UAQ4 Experimental Maglev Module

This paper presents the design of a novel superconducting levitated module for UAQ4 train whose feasibility has been successfully tested and confirmed in laboratory. The work concept of self-balancing “V” shaped levitation module is described and the results of levitation tests performed using a measurement set up are discussed. Lastly the levitation module performances are also carried out using numerical finite element analyses by varying the sideslip angle of the module and work system configuration.

High Speed Propulsion System for UAQ4 Magnetic Levitating Train

This paper presents the design of a novel high speed propulsion system for UAQ4 magnetic levitating train, the feasibility of which has been successfully tested and confirmed in laboratory. A direct-current linear stepper motor that uses permanent magnets distributed on the central beam of track as the stator and the direct current power supplied coils on-board the vehicle as the rotor is proposed and analyzed. The motor performances are evaluated by varying the system parameters by carrying out a finite element numerical model refined with experimental data. The main components of a real scale motor with speed up to 580 km/h for the UAQ4 train application is measured and discussed.

Suspension Dynamic Behaviour of HTS Magnetically Levitated Bogie

This article illustrates the dynamic behaviour of the suspension of the bogie of the UAQ4 experimental superconducting levitating train. The levitation system uses high temperature (liquid nitrogen cooled) superconductor bulk materials on board and permanent magnets distributed on the guideway. The magnetic interaction between the two, and the Meissner effect, both lift and guide the vehicle. A model with one degree of freedom of the bogie is developed and parametric dynamic analyses are performed and discussed by varying the most significant system parameters.

LIGHT RAIL MAGLEV WITH SUPERCONDUCTOR MATERIALS: SYSTEM DESIGN

This research provides a study of an innovative Light Rail Maglev system that can obtain simultaneously the levitation, propulsion, and guidance of vehicles, and provides environmentally sound options for urban transit. The Maglev system uses a short vehicle supported by magnetic forces employing high temperature superconductor materials. The systems primary characteristics are presented and discussed.