Dynamic simulation and experimental verification of flux reversal linear synchronous motor

Chung, Shi-Uk; Kim, Ji‐Won; Woo, Byung-Chul; Hong, Do-Kwan; Lee, Ji-Young; Koo, Dae‐Hyun

doi:10.1007/s12541-012-0022-6

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…There are four main types of LPPMs currently in the literature. These machines are Linear Switched-Flux Permanent Magnet Machines (LSFPMs) [3], [5], [22], [26], [74], [94]- [127], [139], Linear Flux-Reversal Permanent Magnet Machines (LFRPMs) [128]- [144], Linear Doubly-Salient Permanent Magnet Machines (LDSPMs) [145], [146] and Linear Vernier Permanent Magnet Machines (LVPMs) [147]- [176]. Their structural advantage over conventional LPMSMs, i.e., the absence of PMs in the secondary, has brought a huge amount of research involving these LPPMs.…”

Section: Linear Primary Permanent Magnet Machinesmentioning

confidence: 99%

Linear Machines for Long Stroke Applications—A Review

et al. 2020

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This document reviews the current state of the art in the linear machine technology. First, the recent advancements in linear induction, switched reluctance and permanent magnet machines are presented. The ladder slit secondary configuration is identified as an interesting configuration for linear induction machines. In the case of switched reluctance machines, the mutually-coupled configuration has been found to equate the thrust capability of conventional permanent magnet machines. The capabilities of the so called linear primary permanent magnet, viz. switched-flux, flux-reversal, doubly-salient and vernier machines are presented afterwards. A guide of different options to enhance several characteristics of linear machines is also listed. A qualitative comparison of the capabilities of linear primary permanent magnet machines is given later, where linear vernier and switched-flux machines are identified as the most interesting configurations for long stroke applications. In order to demonstrate the validity of the presented comparison, three machines are selected from the literature, and their capabilities are compared under the same conditions to a conventional linear permanent magnet machine. It is found that the flux-reversal machines suffer from a very poor power factor, whereas the thrust capability of both vernier and switched-flux machines is confirmed. However, the overload capability of these machines is found to be substantially lower than the one from the conventional machine. Finally, some different research topics are identified and suggested for each type of machine.

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Section: Linear Primary Permanent Magnet Machinesmentioning

confidence: 99%

Linear Machines for Long Stroke Applications—A Review

et al. 2020

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“…Although the efficiency and power density of PMS motors are much higher than those of LIMs, the initial cost of such motors is considerable, especially when the long on-rail stator involves armature winding or permanent magnets (PM). Thus, linear doubly salient PM (LDSPM) motors with both winding and PMs on the mover have gained more attention in recent years [2][3][4][5][6][7][8][9]. Doubly salient machines have been suggested to incorporate the advantages of switched reluctance (SR) and PM machines [10,11].…”

Section: Introductionmentioning

confidence: 99%

Cogging force mitigation techniques in a modular linear permanent magnet motor

Tootoonchian

Nasiri‐Gheidari²

2016

IET Electric Power Applications

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Modular linear doubly salient permanent magnet motors are well adapted to linear propulsion systems because of their distinct characteristics, such as high efficiency and power density, reduced maintenance and initial cost, low noise and permanent magnet (PM) leakage flux, and fault tolerance capability. However, such motors suffer from high cogging thrust. In this study, various techniques based on previously proposed methods for PM machines are applied on the studied motor and evaluated by using non-linear three-dimensional time-stepping finite element analysis; three novel, optimised techniques are then presented. The techniques presented are based on the minimisation of the variation in air-gap reluctance relative to the displacement. The PM volume and average air-gap length are kept constant in all optimisations. Since the average thrust and thrust ripples under load condition may be affected by cogging reduction techniques, these values are presented for all given techniques. The results show that the proposed techniques not only maintained the average thrust under various loads but also significantly suppressed the thrust ripples for different average thrusts and cogging forces.

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“…It was confirmed that the machine flux leakage was reduced. Consequently, the machine performance could be enhanced [7]. A FRPM linear machine with fault tolerant capability was proposed in [8].…”

Section: Introductionmentioning

confidence: 99%

A novel partitioned stator flux reversal permanent magnet linear machine

Shuraiji

2015

2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

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A novel partitioned stator flux reversal permanent magnet (PS-FRPM) linear machine with segmented iron mover is introduced. The operation principle of the PS-FRPM linear machine is described, and the optimisation of the machine leading design parameters for maximum thrust force using genetic algorithm has been carried out. Moreover, in order to investigate the longitudinal end effect on the machine performance a periodic model has been employed to compare with the real model. It is found that the end effect has a significant impact on the machine performance, particularly in terms of unbalanced magnetic circuit and cogging force.Additionally, the influence of the mover iron pole numbers on the electromagnetic performance of PS-FRPM linear machines has been examined, i.e. 6/4, 6/5, 6/7, 6/8, 6/10 and 6/11 stator/mover pole combinations are designed and compared. It is concluded that the machine with a mover pole pitch which is closer to the stator slot pitch exhibits the best performance among the others.1.

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Dynamic simulation and experimental verification of flux reversal linear synchronous motor

Cited by 8 publications

References 8 publications

Linear Machines for Long Stroke Applications—A Review

Linear Machines for Long Stroke Applications—A Review

Cogging force mitigation techniques in a modular linear permanent magnet motor

A novel partitioned stator flux reversal permanent magnet linear machine

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