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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국철도학회 한국철도학회 학술발표대회논문집 한국철도학회 2009년도 추계학술대회논문집
발행연도
2009.11
수록면
3,425 - 3,432 (8page)

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This paper describes characteristic analysis of linear synchronous motor (LSM) with variable parameters. Linear motor does not use the mechanical coupling for the rectilinear movement. Therefore, structure of linear motor is simple and robust as compared with the rotary motor [1]-[4]. LSM produces the thrust force by interaction between the magnetic field and armature current. There are two types by field location, short primary type and long primary type. In this paper, long primary type LSM is considered for design and characteristic analysis. For characteristic analysis of LSM, analytic and numerical methods are applied. Analytic method for solving the magnetic field distribution of the analytic model is based on the Maxwell’s equations. Using the characteristic equation and equivalent circuit, we analyze the effect of variation of parameters, and then we validate the result by comparing with numerical method by finite element method (FEM).
First of all, we design the LSM for transportation system. In a design step, we analyze the characteristics of LSM and it has influence on design parameters. We also apply the equivalent circuit to analysis and to design. And we compare that dc field winding of long stator type LSM is replaced with permanent magnet. We analyze the effects according to changing shapes of shoe in dc field pole and shapes of permanent magnet. And we analyze thrust force, normal force, and back-emf by changing of material of poles, ratio of pole pitch to slot pitch in the stator, load angle, and so on. In conclusion, we compare the analytic method with numerical method for analyzing the effect by variable parameters. This result will be useful of design and forecast of performance without FEM.

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UCI(KEPA) : I410-ECN-0101-2009-326-019165691