Winding layout for active bearing force reduction in tubular linear motors

Poltschak, Florian; Thalhammer, Richard

doi:10.1109/ldia.2019.8771022

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…This is despite the fact that in long-stroke machines they are more susceptible to UMF during operation due to the long axial distance between the two bearing supports [12][13][14][15]. Subsequently, analytical formulation of the no load magnetic field distribution in tubular IPM machines with translator eccentricity was derived [16]. And a assessed the UMF of double-sided linear switched reluctance machine was assessed [17].…”

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confidence: 99%

Unbalanced magnetic pull in angular eccentricity magnetic screw

Liu,

Chen,

Zhou

et al. 2023

Electronics Letters

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This paper investigates the unbalanced magnetic force (UMF) produced by angular eccentricity in a magnetic screw. The principle of eccentricity is briefly outlined and an analytical expression that can be used to predict UMF of a magnetic screw is established. A 3D magnetic screw model with helically magnetized permanent magnets (PM) has been built and simulated in ANSYS Maxwell with different angular eccentricities. Comparing the finite elements (FE) simulation and analytical calculation results, there is a certain difference in the UMF of the magnetic screw, which is also caused by the asymmetry of the magnetic screw structure. It has been shown that compared to the linear tubular PM motor with the same thrust force capability, the magnetic screw has a much small UMF, which greatly simplifies the mechanical design of the magnetic screw.

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confidence: 99%