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A spoke type permanent magnet synchronous motor (Spoke PMSM) generates axial leakage magnetic flux due to its flux-concentrating rotor structure and therefore degrades motor performance. Although a three dimensional finite element method (3D-FEM) can be used to estimate the axial leakage magnetic flux, it requires a lot of analyzing time. In this study, a calibration coefficient is proposed to estimate...
The edge effect of the secondary reaction plate is influenced on performances of single-sided linear induction motor(SLIM). Considering shapes of the secondary reaction plate, it will be improved the thrust force of SLIM. Thickness and overhang length of reaction plate are weighty design factors for reducing the transverse edge effect. For the optimal design of secondary reaction plate of SLIM, magnetic...
This paper presents the influence of flatness of the secondary reaction plate on performance of a linear induction motor. Construction tolerance of the plate affects directly to the cost and performance of the Linear metro. Detailed simulation of the flatness has been done by using FEM.
In this paper, linear induction motor is analyzed by 3-D finite-element method (3-D FEM) to consider influence of construction of secondary reaction plate on the transverse edge effect. A effective 3-D analysis model for considering the transverse edge effect caused by the finite widths of the primary and the secondary is not only proposed, but also the simple method measuring the transverse edge...
In the past, most analysis of eddy-current brakes published used 2D FEM analysis or analytic method. However, analytic computation or 2D FEM analysis of the braking force is impossible without major simplification of the phenomena. Especially complex geometry such as slit of disc cannot be fully considered by 2D FEM analysis. In this paper, the influence of slit construction upon the performance of...
This paper analyzed the characteristics of the claw pole PM step motor by using 3D FEM. As the magnetization occurs along the z-axis of the motor, it is necessary to apply 3D FEM for analysis of the claw pole PM step motor. Considering the computation time, however, the number of the analysis model is minimized by using the "design of experiments (DOE)". By using the "DOE", efficient...
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