Autors: Mateev, V. M., Marinova, I. Y.
Title: Modelling of low-speed magnetic gear with viscose ferrofluid
Keywords: Coaxial magnetic gear; Coupled field modeling; Coupled field

Abstract: Purpose: In this paper, a computational model of a coaxial magnetic gear (MG) design with viscose ferrofluid between rotors is proposed. Viscose ferrofluid is used to decrease the magnetic reluctance and therefore creates higher magnetic torque. However, viscose friction of ferrofluid is undesirable and must be minimised in this particular application. MG is supposed to operate under low rotational speeds, where the dynamic viscose friction is very low, and the effects of the viscose ferrofluid over the MG’s efficiency must be estimated. The paper aims to analyze the performance of MG with viscose ferrofluid and to estimate the MG efficiency by computational model using finite element method (FEM). Design/methodology/approach: An MG design with viscose ferrofluid between the outer low-speed rotor and modulating steel segments was modelled as a coupled transient magnetic field problem and a kinematic model with viscous friction coefficients derived from a previously computed fluid dyna



    COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 41, issue 5, pp. 1956-1970, 2022, United Kingdom, Emerald Publishing Limited, ISBN ISSN: 0332-1649

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