Design of linear variable reluctance motor using computer-aided design assistant

Chayopitak, Nattapon; Taylor, David G.

doi:10.1109/iemdc.2005.195929

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…Reference [3] describes a design procedure for longitudinal flux LSRMs. Other types of longitudinal flux LSRMs are presented in [4], with coupled flux paths, and in [5] with uncoupled flux paths for a magnetic levitation system. Reference [6] analyzes a high-force longitudinal flux double-sided double-translator LSRM.…”

Section: Introductionmentioning

confidence: 99%

Analytical approach to the design of a high-force density double-sided linear switched reluctance motor

García-Amorós

Andrada

2010

REPQJ

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Abstract. This paper presents an analytical approach to the design of a high-force density double-sided linear switched reluctance motor (LSRM). The design is based on an analytical formulation of the average propulsion force determined using the non-linear energy conversion loop, in which the unaligned magnetization curve is assumed to be a straight line and the aligned magnetization curve is represented by two straight lines. The main dimensions of the LSRM are determined in accordance with the machine requirements, the proposed average propulsion force formula and the geometrical relationships that were presented in a previous paper. The present paper uses two dimensional finite element analysis that has been corrected to take into account the end effects in order to refine and/or to validate the proposed design. Finally an LSRM prototype was built following the proposed design and was verified by experimental measurements.

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Section: Introductionmentioning

confidence: 99%

Analytical approach to the design of a high-force density double-sided linear switched reluctance motor

García-Amorós

Andrada

2010

REPQJ

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“…Reference [3] describes a design procedure for longitudinal flux LSRMs. Other types of longitudinal flux LSRMs are presented in [4], with coupled flux paths, and in [5] with uncoupled flux paths for a magnetic levitation system. Reference [6] Recently, longitudinal LSRMs have been proposed for applications such as precise motion control [7] [8] and as propulsion systems for railway vehicles [9] or for vertical elevators [10] [11] [12].…”

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confidence: 99%

An analytical approach to the thermal design of a double-sided linear switched reluctance motor

García-Amorós

Andrada

Blanqué

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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The purpose of this paper is to provide an analytical approach to the thermal behavior of a longitudinal flux flat linear switched reluctance motor (LSRM) suitable for the early stages of motor design. The approach uses a thermal model based on lumped parameters and adapted to the particularities of LSRMs. The thermal network is solved using the widely recognized Matlab-Simulink software. The proposed analytical approach was verified by means of experimental measurements and thermographic analysis. Index Terms--Linear motors, switched reluctance motors, lumped parameter thermal model I. NOMENCLATURE b p Primary pole width (m) c p Primary slot width (m) T p Primary pole pitch (m) N p Number of active poles per side (Primary) l p Primary pole length (m) b s Secondary pole width (m) c s Secondary slot width (m) T s Secondary pole pitch (m) N s Number of passive poles per side (Secondary) l s Secondary pole length (m) h yp Primary yoke height (m) h ys Secondary yoke height (m) L W Stack length (m) g Air gap length (m) PS Pole stroke (m) S Distance between aligned and unaligned positions (m) m Number of phases N pp Number of active poles per phase II. INTRODUCTION INEAR Switched Reluctance Motors (LSRMs) are becoming attractive candidates for use as linear drives for several reasons: they only have concentrated windings on the stator or translator; they are ruggedly built; they have low expected manufacturing costs; and they have good fault-tolerance capability [1]. LSRMs can be classified as either transverse flux or longitudinal flux. With transverse flux, the plane that contains the flux lines is perpendicular to the line of movement. Reference [2] presents a design procedure for transverse flux LSRMs. In longitudinal flux, the plane that contains the flux lines is parallel to the line of movement. Reference [3] describes a design procedure for longitudinal flux LSRMs. Other types of longitudinal flux LSRMs are presented in [4], with coupled flux paths, and in [5] with uncoupled flux paths for a magnetic levitation system. Reference [6] analyzes a high-force longitudinal flux Φ double-sided double-translator LSRM. Recently, longitudinal LSRMs have been proposed for applications such as precise motion control [7] [8] and as propulsion systems for railway vehicles [9] or for vertical elevators [10] [11] [12]. The purpose of this paper is to provide an analytical approach to the thermal behavior of LSRMs suitable for preliminary motor design. The study focuses on doublesided longitudinal flux LSRMs for high-force density applications. Therefore, transverse LSRMs are beyond the scope of this study. The thermal analysis of electric rotating machines has been extensively described in the literature [13] [14] [15] [16] [17] [18] but up to now little attention has been devoted to the thermal analysis of LSRMs [19]. It is important to point out that the thermal modeling of LSRMs presents considerable particularities. First, LSRMs are open structures, so heat can transfer in all directions. Second, the movement of the transl...

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“…A design procedure for longitudinal-flux LSRM has been described in (Byeong-Seok et al, 2000). Other types of longitudinal-flux LSRMs are presented in (Chayopitak and Taylor, 2005), with coupled flux paths and in (Sun et al, 2008) with uncoupled flux paths for a magnetic levitation system. A high force longitudinalflux double-sided double-translator LSRM has been analyzed in (Deshpande et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

A Novel Linear Switched Reluctance Machine: Analysis and Experimental Verification

Lenin¹

2010

American Journal of Engineering and Applied Sciences

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Abstract:The important problems to be solved in Linear Switched Reluctance Machines (LSRMs) are: (1) to design the shape and size of poles in stator and translator cores; (2) to optimize their geometrical configuration. A novel stator geometry for LSRMs that improved the force profile was presented in this study. In the new geometry, pole shoes were affixed on the stator poles. Static and dynamic characteristics for the proposed structure had been highlighted using Two Dimensional (2-D) Finite Element Analyses (FEA). Motor performance for variable load conditions was discussed. The finite element analyses and the experimental results of this study proved that, LSRMs were one of the strong candidates for linear propulsion drives. Problem statement: To mitigate the force ripple without any loss in average force and force density. Approach: Design modifications in the magnetic structures. Results: 2-D finite element analysis was used to predict the performance of the studied structures. Conclusion/Recommendations: The proposed structure not only reduces the force ripple, also reduced the volume and mass. The future study is to make an attempt on vibration, thermal and stress analyses.

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Design of linear variable reluctance motor using computer-aided design assistant

Cited by 9 publications

References 11 publications

Analytical approach to the design of a high-force density double-sided linear switched reluctance motor

Analytical approach to the design of a high-force density double-sided linear switched reluctance motor

An analytical approach to the thermal design of a double-sided linear switched reluctance motor

A Novel Linear Switched Reluctance Machine: Analysis and Experimental Verification

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