Analysis of Alternatives for the Acceleration of a Hyperloop System

The paper introduces the Hyperloop inspired system by the company ZELEROS and provides a discussion about the alternatives for the acceleration. The ZELEROS system comprises a named propulsion system, based on an air turbine, and an acceleration system based on a linear motor. Different options have been discussed for the linear motor: induction machines, permanent magnet machines and switched reluctance machine, among some other hybrid solutions. Advantages and drawbacks are presented for all of them. For this particular application, where the length of the active side and the speed are really significant, the option of a linear switched reluctance motor results convenient both from the technical and economic points of view. A further discussion about the type of linear switched reluctance motor (LSRM) preferred is also accomplished during the paper, taking into account a particular model of the machine as well as its operation conditions regarding the frequency, dimensions and operation parameters. Three options are compared during the analysis: a single-side horizontal LSRM, a N-side vertical LSRM and a cylindrical LSRM. Qualitative and quantitative (based on the model) arguments are given in favour and against each alternative. Finally, the two-sided vertical switched reluctance machine has been considered as the most adequate for the development of the Zeleros Acceleration System.