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Chang J.,Dong - A University | Kim J.,Electrical Motor Research Center | Kang D.,Electrical Motor Research Center | Bang D.,Technical University of Delft
Journal of Magnetics | Year: 2010

This paper describes the development of a novel transverse flux linear motor (TFLM) excited by permanent magnets (PMs). It combines the advantage of two different TFLMs and produces high thrust with reduced normal force. The magnetic field is analyzed by combining the three-dimensional (3D) equivalent magnetic circuit network (EMCN) method with 2D finite element analysis. The experimental findings of the prototype motors are in good agreements with the analysis results, and demonstrate the potential of the proposed motor as a direct drive requiring relatively long displacement of a mover. © 2010 Journal of Magnetics. Source


Lee J.-Y.,Electrical Motor Research Center | Hong D.-K.,Electrical Motor Research Center | Park D.-H.,Doosan Group | Nam B.-U.,5th R and D Institute | And 2 more authors.
2012 6th International Conference on Electromagnetic Field Problems and Applications, ICEF'2012 | Year: 2012

In this paper, formulas to calculate possible UMFs during assembly process are introduced in order to save calculation time and efforts without using a fully configured 3-dimensional (3-D) analysis model. To calculate the UMFs according to the degree of rotor eccentricity in every time that the rotor position is relatively changed to the stator position in axial direction, the proposed formulas are used with a fully configured 2-dimensional (2-D) model or 2-D and 3-D periodic analysis models. The reliance of the formulas is verified by comparing the results calculated by the formulas and showing the agreement. Then, assembly jigs are designed considering the calculated UMFs. © 2012 IEEE. Source


Chang J.,Dong - A University | Kim J.,Electrical Motor Research Center | Kang D.,Electrical Motor Research Center
Journal of Magnetics | Year: 2011

This paper presents design procedures of a transverse flux linear motor (TFLM). The minimum and maximum flux linkage was determined by the simplified equivalent magnetic circuit and estimated average magnetic flux density at the air gap region by considering the shape of applied magnetomotive force (MMF). With this information, the number of turns of each phase winding was calculated based on the amplitude of applied voltage and speed of a mover. The rated current, coil diameter, and winding area were obtained with the aid of an empirical formula for determining the required MMF. The usefulness of the proposed design method for TFLM is verified by the three-dimensional equivalent magnetic circuit network (EMCN) method and the experimental results of prototyped machine. © 2011 Journal of Magnetics. Source


Chang J.,Dong - A University | Kim J.,Electrical Motor Research Center | Lee J.,Electrical Motor Research Center | Kang D.,Electrical Motor Research Center | Kim K.,Korean University of Science and Technology
Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010 | Year: 2010

This paper presents analytical design procedures of transverse flux linear motor (TFLM). With ratios of important design variables and simplified equivalent magnetic circuit, flux linkage is determined at load and no-load condition. The number of turns of windings can be calculated by considering the amplitude of applied voltage, and rated current, coil diameter, and winding area can be obtained with the help of empirical formula for determining required magnetomotive force (MMF). The usefulness of proposed design method for TFLM is verified by three-dimensional finite element analysis and experimental results of prototyped machine. © 2010 IEEE. Source


Kim J.,Electrical Motor Research Center | Lee J.,Electrical Motor Research Center | Kang D.,Electrical Motor Research Center | Kim K.,Korean University of Science and Technology | Chang J.,Dong - A University
Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010 | Year: 2010

This paper presents linear position detection method using simple magnetic sensors and its arrangements at a mover. The sensor structure and best mounting position are determined by finite element analysis and the performance of it is evaluated by considering total harmonic distortion of generated waves. The experimental results prove the validity of the developed sensor system and show possibility of it for linear position detection to some low-cost linear servo system © 2010 IEEE. Source

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