Design Issues of a Rotating to Linear Motion Magnetic Converter for Short-Distance Transport Applications

Mauro Andriollo, Simone Bernasconi and Andrea Tortella
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Mauro Andriollo: Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Simone Bernasconi: Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Andrea Tortella: Department of Industrial Engineering, University of Padova, 35131 Padova, Italy

Energies, 2021, vol. 14, issue 24, 1-17

Abstract: This paper discusses some design issues of a magnetic rotating to linear motion converter (RLMC), suitable for the propulsion system of a short-distance low-capacity vehicle. It basically operates like a magnetic rack, which executes the contactless conversion of the motor torque into a propulsion thrust, deriving from the interaction of on-board permanent magnet (PM) modules and stationary ferromagnetic steel pieces. A design procedure is set up that deals with both the PM module arrangement and the geometric shape of the steel pieces to optimize different performance aspects. A simplified modeling based on 2D transient finite element analyses is carried out to determine the thrust profile and the RLMC losses, which are essential to assess its practical feasibility. Finally, the characteristics as functions of the load angle and speed are determined to enable the prediction of the dynamic power exchange and then of the net energy demand useful to size the on-board source.

Keywords: magnetic gears; permanent magnet machines; linear motion; electromagnetic modeling; finite element analysis; loss calculation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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