Analysis and Optimization of Slotless Electromagnetic Linear Launcher for Space Use

Li, Liyi; Ma, Mingna; Kou, Baoquan; Chen, Qingquan

doi:10.1109/tps.2010.2049590

Cited by 24 publications

(9 citation statements)

References 7 publications

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“…In order to establish analytical solutions for the magnetic field distribution in the foregoing machine topology, the following assumptions are made [1], [30].…”

Section: B Field Distribution Due To Pm Sourcementioning

confidence: 99%

“…It can be utilized for various industries including military, aerospace, and civil applications [1], [2]. Due to their high efficiency, compact structure, high thrust-to-current ratio, fast dynamic response, simple mechanical construction, high power density, and easy maintenance and control [3]- [6], permanentmagnet (PM) linear synchronous motors (PMLSMs) are appropriate for linear electromagnetic launcher.…”

mentioning

confidence: 99%

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Analytical Modeling and Design Optimization of Linear Synchronous Motor With Stair-Step-Shaped Magnetic Poles for Electromagnetic Launch Applications

Tavana

Shoulaie

Dinavahi

2012

IEEE Trans. Plasma Sci.

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In this paper, a stair-step-shaped magnetic pole structure is proposed to use in a permanent-magnet linear synchronous motor (PMLSM) for its application in an electromagnetic launch system. The aim of this configuration is to shape the air-gap flux density distribution produced by poles to be as close to a sine waveform as possible for the reduction of thrust ripple and the increase of motor controllability. An analytical model is derived for the PMLSMs by solving Maxwell equations and applying the superposition theorem for calculating the magnetic field, electromotive force, and thrust/torque of the motor. Magnet dimensions are then optimized using the analytical method and genetic algorithm, where the reduction of air-gap flux density harmonics is considered as the optimization target. Finally, the effectiveness of the proposed technique to enhance the motor performance is investigated by a time-stepping transient finiteelement method. The results show an improvement in the optimal motor performance.Index Terms-Analytical modeling, finite-element methods (FEMs), permanent-magnet linear synchronous motor (PMLSM), stair-step-shaped magnetic pole (S 3 MP).

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“…In order to establish analytical solutions for the magnetic field distribution in the foregoing machine topology, the following assumptions are made [1], [30].…”

Section: B Field Distribution Due To Pm Sourcementioning

confidence: 99%

mentioning

confidence: 99%

Analytical Modeling and Design Optimization of Linear Synchronous Motor With Stair-Step-Shaped Magnetic Poles for Electromagnetic Launch Applications

Tavana

Shoulaie

Dinavahi

2012

IEEE Trans. Plasma Sci.

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“…In this paper, structure design of the novel motor has been accomplished, modelling of the primary with slotless ring windings is established, and the magnetic fields excited by the secondary are [4], (b) Motor model with slotted ring windings and auxiliary iron yokes [5] analysed. At last, finite-element method (FEM) analysis is provided, a prototype of the proposed trilateral PMLSM is manufactured.…”

Section: Introductionmentioning

confidence: 99%

“…Long stroke is necessary for transport system, and moving‐secondary type is generally used for security [3]. Then multi‐segment primary is one of the best choices which can work with the section and switching operation of power supply [4]. Low energy consumption is obtained in this scheme.…”

Section: Introductionmentioning

confidence: 99%

Characteristic analysis of a trilateral permanent magnet linear synchronous motor with slotless ring windings

Zhang

Luo

Kou

et al. 2018

IET Electrical Systems in Transportation

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To meet the high requirements in transport systems, permanent magnet linear synchronous motor (PMLSM) has become an important field of research. A novel trilateral PMLSM with slotless ring windings is proposed, featuring high thrust and low ripple. The structure design of the novel trilateral PMLSM is introduced first. Then mathematical model of the primary with slotless ring windings is established and analysed, the magnetic fields excited by the permanent magnets in the secondary is studied, based on the equivalent magnetising current method. The analytical calculating results of the novel motor are validated by finite-element method, and a prototype is tested to validate the analytical results of this novel motor. The study provides the fundamental characteristic analysis of the novel trilateral PMLSM with slotless ring windings. This study is provided for the special section 'Design, modeling and control of electric drives for transportation applications' (VPPC 2016).

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“…They have been proposed for airspace and air craft launch systems, replacing steam catapults, due to their advantages in terms of controllability, security, volume and lifetime [2][3][4]. Moreover, super velocities up to 8 Km/s can be reached with such devices [5].…”

Section: Introductionmentioning

confidence: 99%

Simplified Modeling and Measurement Procedures for Electromagnetic Launchers Performances Evaluation

Menana¹

2013

PIER M

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Abstract-In this work, Simplified modeling and measurement procedures for capacitive driven electromagnetic launchers using magnetic armatures are presented. The modeling strategy is based on a successive solving of the circuit equation coupled to a 2D finite element (FEM) magnetostatic computation and the mechanical equation of the armature motion. This leads to a considerable time and memory space saving compared to a time domain magnetodynamic problem computation. The armature velocity is determined through the analysis of the time variation of the induced voltage, due to the armature remanent magnetization, in an auxiliary coil placed at the launcher extremity. The modelling and measurement strategies are implemented and tested on a laboratory developed coil-gun prototype. Modelling and measurement results are provided.

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Analysis and Optimization of Slotless Electromagnetic Linear Launcher for Space Use

Cited by 24 publications

References 7 publications

Analytical Modeling and Design Optimization of Linear Synchronous Motor With Stair-Step-Shaped Magnetic Poles for Electromagnetic Launch Applications

Analytical Modeling and Design Optimization of Linear Synchronous Motor With Stair-Step-Shaped Magnetic Poles for Electromagnetic Launch Applications

Characteristic analysis of a trilateral permanent magnet linear synchronous motor with slotless ring windings

Simplified Modeling and Measurement Procedures for Electromagnetic Launchers Performances Evaluation

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