Affiliation:
1. School of Electrical and Information Engineering Jiangsu University Zhenjiang China
Abstract
AbstractThis 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.
Funder
National Natural Science Foundation of China
China Postdoctoral Science Foundation
Priority Academic Program Development of Jiangsu Higher Education Institutions
Publisher
Institution of Engineering and Technology (IET)
Subject
Electrical and Electronic Engineering