Design and comparison of two kinds of primary wound field flux-switching linear motors

Cao, Ruiwu; Jin, Yi; Zhang, Yanze; Cheng, Ming

doi:10.1108/compel-09-2016-0406

Cited by 7 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Switched reluctance linear machine (SRLM) has well-combined many inherent advantages of both linear machine and rotary switched reluctance machine (SRM), such as simple, robust and durable structure, good tolerance in severe environment, high efficiency and low manufacture cost (Norsrati and Nazarzadh, 2017;Cipriani et al, 2016;Musolino et al, 2014;Wang et al, 2018a;Pan et al, 2017;Sarapulov et al, 2018;Wang et al, 2017;Zou et al, 2014;Wei et al, 2019;Cao et al, 2018;Woronowicz et al, 2018). Its linear motion mode could make it superior for many certain circumstances such as electromagnetic aircraft launch system, conveying system and rail transportation system.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimal design of double-sided switched reluctance linear generator for wave power generation

Zhao

Chen

Nie

et al. 2019

COMPEL

View full text Add to dashboard Cite

Purpose This paper aims to propose a double-sided switched reluctance linxear generator (DSRLG) exclusively for wave power generation. The initial dimensions are given through design experience and principles. To ameliorate comprehensive performance of the DSRLG, the multi-objective optimization design is processed. Design/methodology/approach The multi-objective optimization design of the DSRLG is processed by adopting a modified entropy technique for order of preference by similarity to ideal solution (TOPSIS) algorithm. First, sensitivity analyzes on geometric parameters of the DSRLG are conducted to determine several pivotal geometric parameters as optimization variables. Then, the multi-objective optimization is conducted on the basis of initial dimensions. After determination of synthetical evaluation value of each structure parameter, the best dimension scheme of the DSRLG is concluded. Findings After verification by finite element method simulation and dynamic simulation, the final dimension scheme proves to perform better than the initial scheme. Finally, experiments are conducted to verify the accuracy of both the stable finite element DSRLG model and dynamic simulation system model so that the conclusion of this paper proves to be reliable and compelling. Originality/value This paper proposes an improved structure of the DSRLG, which is superior for wave power generation. Meanwhile, a novel modified entropy TOPSIS algorithm is applied to the field of electrical machine multi-objective optimal design for the first time.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-objective optimal design of double-sided switched reluctance linear generator for wave power generation

Zhao

Chen

Nie

et al. 2019

COMPEL

View full text Add to dashboard Cite

show abstract

“…A new type of linear flux-switching motors (LFSMs) referred as segmented secondary linear flux-switching motor (SSLFSM) is developed for rail transportation applications (Abdollahi and Vaez-Zadeh, 2014). SSLFSMs inherit most merits of LFSMs such as simple and robust structure of secondary and high force density (Shen et al, 2018;Cao et al, 2018). However, This work was supported by ALBORZ-Province-Power-Distribution-Company.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic fields and thrust-ripples calculation for segmented-secondary linear flux-switching motors

Hosseini

Javadi

Vaez‐Zadeh

2019

COMPEL

View full text Add to dashboard Cite

Purpose This paper aims to investigate analytical electromagnetic fields and thrust ripples representation of linear flux-switching motors with simple modulated secondary referred as segmented secondary linear flux-switching motor (SSLFSM). Design/methodology/approach SSLFSMs are applicable to transportation systems like Maglev due to their simple and consequently low-cost secondary structures and high force density. However, they have high thrust ripples that deteriorate a smooth motion in rail transportation systems. Therefore, derivation of accurate analytical models for thrust ripples minimization of the motor is essential, which is absent in the literature. In this paper, a two-dimensional analytical model is developed for this motor. The model is based on transfer relations and Fourier theory used for solving a two-dimensional boundary value problem. Certain model regions are determined by considering actual machine structure and observing specific rules. Analytical solution of Maxwell and Poison equations are then obtained in the regions. Finding Using the presented modeling method, the airgap electromagnetic field distribution and developed thrust of the motor are calculated for different positions of the motor as well as its thrust ripples. They are verified by the results obtained from finite element method. Also, the analytical results are compared with the presented experimental results. Originality/value This paper has analytically presented the airgap electromagnetic field distribution, thrust and thrust ripples of the SSLFSMs. This modeling is essential in thrust ripples minimization of the motor.

show abstract

Review of linear flux-switching machines for variable speed applications

Ullah,

Khan

2024

WJE

View full text Add to dashboard Cite

Purpose This paper aims to present an overview of permanent magnet linear flux-switching machines (PMLFSM), field excited LFSM and hybrid excited LFSM (HELFSM) topologies as presented in literature for transportation systems such as high-speed trains and maglev systems. Design/methodology/approach The structural designs of different configurations are thoroughly investigated, and their respective advantages and disadvantages are examined. Based on the geometry and excitation sources, a detailed survey is carried out. Specific design and space issues, such as solid and modular structures, structure strength, excitation sources placement, utilization of PM materials, and flux leakage are investigated. Findings PMLFSM provide higher power density and efficiency than induction and DC machines because of the superior excitation capability of PMs. The cost of rare-earth PMs has risen sharply in the past few decades because of their frequent use, so the manufacturing cost of PMLFSM is increasing. Owing to the influence of high-energy PMs and magnetic flux concentration, the efficiency and power density are higher in such machines. PM is the only excitation source in PMLFSM and has constant remanence, limiting its applications in a wide speed operation range. Therefore, the field winding is added in the PMLFSM to flexibly regulate the magnetic field, making it a hybrid excited one. The HELFSM possess better flux linkage, high thrust force density and better flux controlling ability, leading to a wide speed range. However, the HELFSM have problems with the crowded mover, as PM, field excited and armature excitation are housed on a short mover. So, for better performance, the area of each excitation component has to compete with each other. Originality/value Transportation of goods and people by vehicles is becoming increasingly prevalent. As railways play a significant role in the transportation system and are an integral part of intercity transportation. So, this paper presents an overview of various linear machines that are presented in literature for rail transit systems to promote sustainable urban planning practices.

show abstract

Design and comparison of two kinds of primary wound field flux-switching linear motors

Cited by 7 publications

References 18 publications

Multi-objective optimal design of double-sided switched reluctance linear generator for wave power generation

Multi-objective optimal design of double-sided switched reluctance linear generator for wave power generation

Electromagnetic fields and thrust-ripples calculation for segmented-secondary linear flux-switching motors

Review of linear flux-switching machines for variable speed applications

Contact Info

Product

Resources

About