• Title/Summary/Keyword: Linear switched reluctance Motor

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Levitation and propulsion Control of Magnetic Levitated Vehicle Application Using Linear Switched-Reluctance Motor (LSRM을 이용한 자기부상열차 부상 및 추진제어)

  • SUNG H.K.;JO J.M.;JEONG B.S.;JANG S.M.;KWEON J.K.;KIM D.S.
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.1343-1345
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    • 2004
  • The inherent pulsating force generation makes the control of switched-reluctance motor quite complicate. So in this paper, an orthogonal scheme that can be applied to the control of LSRM will be presented. By using this scheme, the motor reluctance forces, which are magnetically decoupled and position dependent, can be projected onto sets of stationary axes that are aligned with the motor fixed secondary poles. Hence the electromagnetic forces can be controlled not only for driving the LSRM at its propulsive direction but also for alleviating the load at its normal direction. Simulation results will be provided to show the validity of the proposed scheme.

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Characteristic analysis of linear switched reluctance motor according to switching condition (스위칭 조건에 따른 리니어 스위치드 릴럭턴스 전동기의 특성 해석)

  • Jang, Seok-Myeong;Park, Ji-Hoon;You, Dae-Joon;Sung, Ho-Kyung;Cho, Han-Wook
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.725-726
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    • 2008
  • This paper deals with characteristic analysis of Linear Switched Reluctance Motor (LSRM) according to switching condition. When approved current in each phase by decided position, we made sure current and voltage according to turn-on, turn-off. In dynamic simulation of LSRM, through an experiment, we decided turn-on position of inductance profile. Also, we presented dynamic characteristic analysis model which is consisted at motor and sensor signal part, etc., and substitute circuit constant that get using magnetic equivalent circuit method, we confirmed current and voltage waveform.

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Force Characteristic Analysis of Linear Switched Reluctance Motor according to Design Parameter (설계 변수에 따른 리니어 스위치드 릴럭턴스 전동기의 힘특성 해석)

  • Jang, Seok-Myeong;Park, Ji-Hoon;Choi, Jang-Young;You, Dae-Joon;Ko, Kyoung-Jin;Sung, Ho-Kyung
    • Proceedings of the KIEE Conference
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    • 2008.04c
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    • pp.77-79
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    • 2008
  • This paper deals with extraction of design parameters of Linear Switched Reluctance Motor (LSRM) based on force calculation using space harmonic analysis, 2D Finite Element Method (FEM) and experimental measurement. First, analytical solutions for flux density due to mover winding currents are derived in terms of magnetic vector potential and a 2D rectangular coordinate system, for the case when the mover is located at aligned and unaligned position. The analytical results are compared with those obtained from a 2D FEM Second, using Fourier series expansion, this paper predicts the force profile of LSRM analytically.

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Eddy Current Analysis of Linear Switched Reluctance Motor using Analytical Method (해석적 방법을 이용한 직선형 스위치드 릴럭턴스 전동기의 2차측 와전류 해석)

  • Jang, Seok-Myeon;Park, Ji-Hoon;Han, Cheol;You, Dae-Joon;Seo, Jin-Ho;Lee, Kyoung-Bok
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1077-1078
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    • 2011
  • This paper deals with eddy current analysis of linear switched reluctance motor using analytical method. First, flux density is calculated using analytical method. From flux density, eddy current is analyzed according to moving speed. Finally, analyzed result is compared with finite element method.

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Analysis on electromagnetic characteristics of thrust/levitation system using linear switched reluctance motor and electromagnet according to design parameters (직선형 스위치드 릴럭턴스 전동기와 전자석 추진 부상 시스템의 설계 변수에 따른 전자기 특성해석)

  • Jang, Seok-Myeong;Choi, Ji-Hwan;Park, Ji-Hoon;Sung, So-Young
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.802_803
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    • 2009
  • This paper deals with extraction of design parameters of Linear Switched Reluctance Motor (LSRM) and electromagnet based on force calculation using space harmonic analysis and 2D Finite Element Method (FEM) measurement. We introduce the design method employing FEM and parameter estimation method and a characteristics of LSRM according to variation of parameter.

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Characteristic Analysis of the Linear Switched Reluctance Motor with Interior Permanent Magnet according to Magnetization of Permanent Magnet (영구자석 삽입형 직선형 스위치드 릴럭턴스 전동기의 전자기 특성 해석)

  • Jang, Seok-Myeong;Kim, Jin-Soon;Park, Ji-Hoon;Lee, Un-Ho;Goo, Cheol-Soo
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.806_807
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    • 2009
  • This paper deals with characteristic analysis on the Linear Switched Reluctance Motor with Interior Permanent Magnet (LSRM-IPM) according to the magnetization of permanent magnet. The governing equations and force equations are derived using analytical method for the suggested models. This paper compares the force characteristics in terms of three cases considering the position and size of permanent magnet.

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Design of high speed linear switched reluctance motor (고속 직선형 스위치드 릴럭턴스 전동기의 설계)

  • Jang, Seok-Myeong;Park, Ji-Hoon;Choi, Jang-Young;You, Dae-Joon;Sung, Ho-Kyung
    • Proceedings of the KIEE Conference
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    • 2007.04c
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    • pp.62-64
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    • 2007
  • This paper deals with design of high speed linear switched reluctance motor(LSRM). First, we derived design factor from pole arc ratio of stator and mover, and calculated time constant using inductance and resistance. Second, we decided design parameter from design factor using time constant. Finally, analyze characteristics for LSRM using finite element analysis.

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Design of Linear Switched Reluctance Motor considering to Normal Force (수직력을 고려한 리니어 스위치드 릴럭턴스 전동기의 설계)

  • Jang, Seok-Myeong;Park, Ji-Hoon;Ko, Kyoung-Jin;Sung, Ho-Kyung;Sung, So-Young
    • Proceedings of the KIEE Conference
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    • 2008.10c
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    • pp.59-61
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    • 2008
  • This paper deals with design of Linear Switched Reluctance Motor (LSRM) considering to normal force. First, we derived design factor from pole arc ratio of stator and mover, and calculated time constant using inductance and resistance. Second, we decided design parameter from design factor using time constant, and analyze characteristics for LSRM using finite element analysis. Finally, we analyzed force characteristic according to design factor.

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The calculation of inductance profile for linear switched reluctance motor by analytical method (해석적 방법에 의한 리니어 스위치드 릴럭턴스 전동기의 인덕턴스 프로파일 산정)

  • Jang, Seok-Myeong;Park, Ji-Hoon;Choi, Jang-Young;Sung, Ho-Kyung
    • Proceedings of the KIEE Conference
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    • 2005.10c
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    • pp.138-140
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    • 2005
  • This paper deals with inductance profile of linear switched reluctance motor. Inductance profile of LSRM calculate at align and unalign position using analytical method. Analytical method of this paper used space harmonics method, Also, analysis result compares with data that is derived through an experiment, and proved validity.

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Driving Algorithm for Contact-free Linear Actuator (비접촉 선형 구동기를 위한 구동 알고리즘)

  • 이상헌;백윤수
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1034-1037
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    • 2003
  • Recently in the field of precision positioning device, the contact-free actuators are gaining focuses with their outstanding performances by eliminating mechanical frictions. Th is paper is about the driving algorithm for contact-free linear actuator. The proposed driving algorithm has similar structure of drives of switched reluctance motor and reduces the normal forces and force ripple. The simulation and experiment are executed to verify the proposed method.

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