Multiphysics Design of an Automotive Regenerative Eddy Current Damper

Umid Jamolov, Francesco Peccini and Giovanni Maizza
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Umid Jamolov: Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
Francesco Peccini: AKKA Belgium, Avenue Jules Bordet 168, 1140 Evere, Belgium
Giovanni Maizza: Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy

Energies, 2022, vol. 15, issue 14, 1-18

Abstract: This research presents a finite element multi-physics design methodology that can be used to develop and optimise the inherent functions and geometry of an innovative regenerative eddy current (REC) damper for the suspension of B class vehicles. This methodology was inspired by a previous work which has been applied successfully for the development of an eddy current (EC) damper used for the same type of applications. It is based on a multifield finite element coupled model that can be used to fulfil the electromagnetic, thermal, and fluid dynamic field properties and boundary conditions of a REC damper, as well as its non-linear material properties and boundary conditions, while also analysing its damping performance. The proposed REC damper features a variable fail-safe damping force, while electric power is advantageously regenerated at high suspension frequencies. Its damping performance has been benchmarked against that of a regular hydraulic shock absorber (selected as a reference) by analysing the dynamic behaviour of both systems using a quarter car suspension model. The results are expressed in terms of damping force, harvested power, thermal field, comfort and handling, with reference to ISO-class roads. The optimisation analysis of the REC damper has suggested useful guidelines for the harmonisation of damping and regenerative power performances during service operation at different piston speeds.

Keywords: eddy current damper; regenerative shock absorber; automotive suspension; vehicle dynamics; finite element multi-physics; soft and hard magnetic materials (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: 2022
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