Comparison Between Linear Induction Motor and Linear Flux-Switching Permanent-Magnet Motor for Railway Transportation

Cao, Ruiwu; Lu, Minghang; Jiang, Ning; Cheng, Ming

doi:10.1109/tie.2019.2892676

Cited by 86 publications

(37 citation statements)

References 21 publications

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“…Linear induction machines are one of the most common linear machine types nowadays. They are most widespread in railway transportation, where thanks to the non-adhesion thrust capability, LIMs allow climbing higher gradients than the conventional systems [21], [24], [26], [40]. Linear elevators and electromagnetic launch systems are also other applications where the implementation of LIMs has been studied [22], [41].…”

Section: Linear Induction Machinesmentioning

confidence: 99%

“…Linear elevators and electromagnetic launch systems are also other applications where the implementation of LIMs has been studied [22], [41]. Their main advantages are their simplicity, robustness and low initial cost [22], [25], [26]. The absence of PMs also makes them inherently immune to irreversible PM demagnetisation, so their reliability is a remarkable feature [25].…”

Section: Linear Induction Machinesmentioning

confidence: 99%

“…However, much like in the case of rotary machines, the efficiency and power factor of LIMs still remain low [11], [26], [40], [42]. The losses of LIMs are even increased when compared to induction RMs due to the end effects, especially at high speed.…”

Section: Linear Induction Machinesmentioning

confidence: 99%

“…In the last decade, a new and promising type of linear machine, Linear Primary Permanent Magnet Machine (LPPM), has emerged in the literature [3], [5], [22], [26], [74], [94]- [176]. However, a comprehensive review of linear machines for long stroke applications has not been published yet.…”

Section: Introductionmentioning

confidence: 99%

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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 Induction Machinesmentioning

confidence: 99%

Section: Linear Induction Machinesmentioning

confidence: 99%

Section: Linear Induction Machinesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Linear Machines for Long Stroke Applications—A Review

et al. 2020

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“…FEM sonuçlarını doğrulamak için küçük ölçekli bir LFSPM prototipi oluşturularak denemişlerdir. Deneysel sonuçlar FEM sonucuna karşılık gelir, böylece LFSPM'lerin performansını araştırmak için FEM kullanmanın fizibilitesini desteklemiştir (Cao, Lu, Jiang, & Cheng, 2019).…”

Section: Introductionunclassified

Asenkron Motorun Çalışma Parametrelerinin SCADA ile İzlenmesinin Tasarımı

Terzioğlu¹,

Ağaçayak²,

Yalçin³

et al. 2019

European Journal of Science and Technology

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Özet Asenkron motorlar; doğrudan bir fazlı ya da üç fazlı alternatif akım şebekesinden beslenebilmesi, dayanıklı, bakım gerektirmeyen yapısı ve düşük maliyetleri nedeniyle, hem sanayide hem de ev aletlerinde en çok kullanılan motor türü haline gelmiştir. Asenkron makinelerin, senkron makinelerinden en büyük farkı dönme hızının sabit olmayışıdır. Motor olarak çalışan bir asenkron motorda bu hız, senkron hızdan küçüktür. Makine bu özelliğinden dolayı, asenkron makine adını almıştır. Dünyada üretilen enerjinin %70 civarındaki kısmının asenkron motorlarda tüketiliyor olması bu motorların kullanım sıklığını ve önemini göstermektedir. Yapılarının basit, ekonomik ve sağlam olmaları, bakım gerektirmemeleri ve her türlü ortam koşullarında çalışabilmeleri gibi üstün özellikleri nedeniyle asenkron motorlar, endüstride yaygın olarak kullanılmaktadır. Yaygın olarak kullanılan asenkron motorların kontrolünde çeşitli sürme teknikleri kullanılmaktadır. Bu sürme tekniklerine göre asenkron motorların matematiksel modellemesinin gerçekleştirilmesi de önemli bir çalışma konusudur. Asenkron motorlarının dinamik performanslarının incelenmesi ve matematiksel modellerinin çıkartılabilmesi için parametrelerinin doğru olarak hesaplanması gerekmektedir. Bu çalışmada asenkron motorların en büyük sorunlarından birisi olan parametrelerinin doğru olarak belirlenmesi amaçlanmıştır. Bilgisayar ve mikroişlemci teknolojisinin gelişmesine bağlı olarak asenkron motor parametrelerinin tespiti hem kolaylaşmış hem de daha önem kazanmıştır. Bu çalışmayla yaygın olarak kullanılan asenkron motorların çalışma parametreleri olan akım, gerilim, cos φ, tork, güç değerlerinin operatör panelinde okunmasının sağlanacağı bir SCADA sisteminin tasarımı gerçekleştirilmiştir. Bu sistemde PLC, HMI ve hız kontrol cihazı haberleştirilerek asenkron motorun çalışma parametreleri HMI ekranında görüntülenebilecektir. Ekranda görüntülenen veriler kullanılarak asenkron motorun istenilen değerlerine hesaplama yöntemleri kullanılarak ulaşılabilecektir. SCADA programında asenkron motor parametrelerinin en doğru ve en hızlı şekilde hesaplanacağı bir algoritma tasarlanacaktır. Parametre değerlerinin doğru olarak hesaplanması motorun dinamik etkilerinin belirlenmesinde ve sürme devrelerinin tasarlanmasında büyük bir gelişme sağlayacaktır.

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Electromagnetic‐Thermal Analysis of High‐Temperature Direct Drive Electric‐Actuated Valve Canned Permanent Magnet Synchronous Motor

Li³

et al. 2022

IEEJ Transactions Elec Engng

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The high‐temperature electric‐actuated valve widely adopts the split structure, and the valve stem drives the opening and closing of the valve after passing through the high‐temperature packing and sealing structure. However, the transmission chain is too long, which cannot meet the pursuit of small volume and lightweight in the nuclear industry. In this paper, a novel integrated structure of high‐temperature direct drive electric‐actuated valve canned permanent magnet synchronous motor (DDEAV‐CPMSM) is proposed. The structure omits the dynamic sealing structure composed of stuffing box, pressure plate and pressure sleeve, as well as the transmission structure of gears and couplings, and the reliability is significantly improved. This paper focuses on the calculation of the dimension parameters, thermal load design, and electromagnetic vibration of DDEAV‐CPMSM, and compares it with the integrated structure of the induction motor to explore the optimal topology of the high‐temperature electric‐actuated valve. Aiming at the problem of serious heat generation in limited space, it is difficult to simulate the running time of high‐temperature valve. Based on the magneto‐thermal coupling method, a 3D temperature field model considering high‐temperature heat source, canned sleeve eddy current loss, and hydraulic friction loss is established. The steady‐state temperature distribution of the system at high temperature and the transient temperature change law of valve opening and closing are analyzed, and the minimum time of secondary start‐up and the maximum running time under fault conditions are further studied, to provide a theoretical basis for the application of DDEAV‐CPMSM. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Comparison Between Linear Induction Motor and Linear Flux-Switching Permanent-Magnet Motor for Railway Transportation

Cited by 86 publications

References 21 publications

Linear Machines for Long Stroke Applications—A Review

Linear Machines for Long Stroke Applications—A Review

Asenkron Motorun Çalışma Parametrelerinin SCADA ile İzlenmesinin Tasarımı

Electromagnetic‐Thermal Analysis of High‐Temperature Direct Drive Electric‐Actuated Valve Canned Permanent Magnet Synchronous Motor

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