The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)

Nahid Ahmadinia

doi:doi:10.11648/j.epes.20140304.11

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The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)

Nahid Ahmadinia

Published in American Journal of Electrical Power and Energy Systems (Volume 3, Issue 4)

Received: 13 June 2014 Accepted: 27 June 2014 Published: 20 July 2014

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Abstract

First of all mentions linear induction machines in 1890, only two years after the discovery of the rotary induction principle. Basically the concept of the linear device consists in imagining a rotary machine to be cut along a radial plane and 'unrolled' so that the primary member then consists of a single row of coils in slots in a laminated steel core. The differences between rotary and linear motors are outlined and reasons for the slow application of linear motors are explained. Principal developments in linear machines since the 1950s are described. Induction motor which can be used to power capsules in an xv capsules in a pneumatic capsule pipeline system. Several optimal design schemes of a single sided linear induction motor (SLIM) adopted in linear metro are presented in this paper Firstly the equivalent circuit of SLIM fully considering the end effects, half-filled slots, back iron saturation and skin effect is proposed ,based on one dimensional air gap magnetic equations In the circuit, several coefficients including longitudinal end effect coefficients Kr(s) and Kx(s), transversal end edge effect coefficients Cr(s) and Cx (s), and skin effect coefficient K fare achieved by using the dummy electric potential method and complex power equivalence between primary and secondary sides Furthermore, several optimal design restraint equations of SLIM are provided in order to improve the operational efficiency and reduce the primary weight. The result tries to establish a new concept for elevators through a new construction technique and assembly of the system with counterweight, which increases the reliability and comfort with cost reduction.

Published in	American Journal of Electrical Power and Energy Systems (Volume 3, Issue 4)
DOI	10.11648/j.epes.20140304.11
Page(s)	71-75
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Electric Motors, linear Induction Motor (LIM), Single-Sided linear (SLIM)

References

[1]	Chapman, S. (1999). Electric Machinery Fundamentals, New York: McGraw-Hill.
[2]	Control Techniques. (2007). User Guide Unidrive Models size 0 to 6. Emerson Industrial Automation
[3]	Doyle, M. Electromagnetic Aircraft Launch System - EMALS. Naval Air Warfare Center, Aircraft Division Lakehurst, NJ 08733
[4]	Meeker D. Indirect Vector Control of a Redundant Linear Induction Motor for Aircraft Launch. NAVAIR Public Release 08-642.
[5]	Nowak, L. (2001). Movement simulation in 3D eddy current transient problem COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 20, No. 1, 2001, pp. 293 – 302, MCB University Press.
[6]	Ogata, K. (2002). Modern Control Engineering, New Jersey: Prentice Hall.
[7]	Roa, C. (2010). Electric Motor Control System with Application to Marine Propulsion, MSc Thesis Dissertation, Department of Ocean and Mechanical Engineering, Florida Atlantic University, Florida.
[8]	Upadhyay, J. Mahendra S.N, Electric Traction, Allied publishers Ltd, New Delhi, 2000.
[9]	Xiros, N. (2010). Nonlinear Modeling of Linear Induction Machines for Analysis and Control of Novel Electric Warship Subsystems

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APA Style

Nahid Ahmadinia. (2014). The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). American Journal of Electrical Power and Energy Systems, 3(4), 71-75. https://doi.org/10.11648/j.epes.20140304.11

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ACS Style

Nahid Ahmadinia. The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). Am. J. Electr. Power Energy Syst. 2014, 3(4), 71-75. doi: 10.11648/j.epes.20140304.11

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AMA Style

Nahid Ahmadinia. The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). Am J Electr Power Energy Syst. 2014;3(4):71-75. doi: 10.11648/j.epes.20140304.11

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@article{10.11648/j.epes.20140304.11,
  author = {Nahid Ahmadinia},
  title = {The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {3},
  number = {4},
  pages = {71-75},
  doi = {10.11648/j.epes.20140304.11},
  url = {https://doi.org/10.11648/j.epes.20140304.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20140304.11},
  abstract = {First of all mentions linear induction machines in 1890, only two years after the discovery of the rotary induction principle. Basically the concept of the linear device consists in imagining a rotary machine to be cut along a radial plane and 'unrolled' so that the primary member then consists of a single row of coils in slots in a laminated steel core. The differences between rotary and linear motors are outlined and reasons for the slow application of linear motors are explained. Principal developments in linear machines since the 1950s are described. Induction motor which can be used to power capsules in an xv capsules in a pneumatic capsule pipeline system. Several optimal design schemes of a single sided linear induction motor (SLIM) adopted in linear metro are presented in this paper Firstly the  equivalent circuit of SLIM  fully considering the  end effects, half-filled slots, back iron  saturation and skin effect is proposed ,based on  one dimensional  air gap magnetic equations In the circuit,  several coefficients including longitudinal end effect coefficients Kr(s) and Kx(s), transversal end edge effect coefficients Cr(s) and Cx (s), and skin effect coefficient K fare achieved by using the dummy electric potential method and complex power equivalence between primary and secondary sides Furthermore, several optimal design restraint  equations of SLIM are provided in order to improve the operational efficiency and reduce the primary weight. The result tries to establish a new concept for elevators through a new construction technique and assembly of the system with counterweight, which increases the reliability and comfort with cost reduction.},
 year = {2014}
}

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TY  - JOUR
T1  - The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)
AU  - Nahid Ahmadinia
Y1  - 2014/07/20
PY  - 2014
N1  - https://doi.org/10.11648/j.epes.20140304.11
DO  - 10.11648/j.epes.20140304.11
T2  - American Journal of Electrical Power and Energy Systems
JF  - American Journal of Electrical Power and Energy Systems
JO  - American Journal of Electrical Power and Energy Systems
SP  - 71
EP  - 75
PB  - Science Publishing Group
SN  - 2326-9200
UR  - https://doi.org/10.11648/j.epes.20140304.11
AB  - First of all mentions linear induction machines in 1890, only two years after the discovery of the rotary induction principle. Basically the concept of the linear device consists in imagining a rotary machine to be cut along a radial plane and 'unrolled' so that the primary member then consists of a single row of coils in slots in a laminated steel core. The differences between rotary and linear motors are outlined and reasons for the slow application of linear motors are explained. Principal developments in linear machines since the 1950s are described. Induction motor which can be used to power capsules in an xv capsules in a pneumatic capsule pipeline system. Several optimal design schemes of a single sided linear induction motor (SLIM) adopted in linear metro are presented in this paper Firstly the  equivalent circuit of SLIM  fully considering the  end effects, half-filled slots, back iron  saturation and skin effect is proposed ,based on  one dimensional  air gap magnetic equations In the circuit,  several coefficients including longitudinal end effect coefficients Kr(s) and Kx(s), transversal end edge effect coefficients Cr(s) and Cx (s), and skin effect coefficient K fare achieved by using the dummy electric potential method and complex power equivalence between primary and secondary sides Furthermore, several optimal design restraint  equations of SLIM are provided in order to improve the operational efficiency and reduce the primary weight. The result tries to establish a new concept for elevators through a new construction technique and assembly of the system with counterweight, which increases the reliability and comfort with cost reduction.
VL  - 3
IS  - 4
ER  -

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Author Information

Nahid Ahmadinia

M. A. Electrical Power Engineering, Science and Research Branch, Islamic Azad University, Broujerd, Iran

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Plain Text BibTeX RIS

APA Style

Nahid Ahmadinia. (2014). The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). American Journal of Electrical Power and Energy Systems, 3(4), 71-75. https://doi.org/10.11648/j.epes.20140304.11

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ACS Style

Nahid Ahmadinia. The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). Am. J. Electr. Power Energy Syst. 2014, 3(4), 71-75. doi: 10.11648/j.epes.20140304.11

Copy | Download

AMA Style

Nahid Ahmadinia. The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM). Am J Electr Power Energy Syst. 2014;3(4):71-75. doi: 10.11648/j.epes.20140304.11

Copy | Download

@article{10.11648/j.epes.20140304.11,
  author = {Nahid Ahmadinia},
  title = {The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)},
  journal = {American Journal of Electrical Power and Energy Systems},
  volume = {3},
  number = {4},
  pages = {71-75},
  doi = {10.11648/j.epes.20140304.11},
  url = {https://doi.org/10.11648/j.epes.20140304.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.epes.20140304.11},
  abstract = {First of all mentions linear induction machines in 1890, only two years after the discovery of the rotary induction principle. Basically the concept of the linear device consists in imagining a rotary machine to be cut along a radial plane and 'unrolled' so that the primary member then consists of a single row of coils in slots in a laminated steel core. The differences between rotary and linear motors are outlined and reasons for the slow application of linear motors are explained. Principal developments in linear machines since the 1950s are described. Induction motor which can be used to power capsules in an xv capsules in a pneumatic capsule pipeline system. Several optimal design schemes of a single sided linear induction motor (SLIM) adopted in linear metro are presented in this paper Firstly the  equivalent circuit of SLIM  fully considering the  end effects, half-filled slots, back iron  saturation and skin effect is proposed ,based on  one dimensional  air gap magnetic equations In the circuit,  several coefficients including longitudinal end effect coefficients Kr(s) and Kx(s), transversal end edge effect coefficients Cr(s) and Cx (s), and skin effect coefficient K fare achieved by using the dummy electric potential method and complex power equivalence between primary and secondary sides Furthermore, several optimal design restraint  equations of SLIM are provided in order to improve the operational efficiency and reduce the primary weight. The result tries to establish a new concept for elevators through a new construction technique and assembly of the system with counterweight, which increases the reliability and comfort with cost reduction.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)
AU  - Nahid Ahmadinia
Y1  - 2014/07/20
PY  - 2014
N1  - https://doi.org/10.11648/j.epes.20140304.11
DO  - 10.11648/j.epes.20140304.11
T2  - American Journal of Electrical Power and Energy Systems
JF  - American Journal of Electrical Power and Energy Systems
JO  - American Journal of Electrical Power and Energy Systems
SP  - 71
EP  - 75
PB  - Science Publishing Group
SN  - 2326-9200
UR  - https://doi.org/10.11648/j.epes.20140304.11
AB  - First of all mentions linear induction machines in 1890, only two years after the discovery of the rotary induction principle. Basically the concept of the linear device consists in imagining a rotary machine to be cut along a radial plane and 'unrolled' so that the primary member then consists of a single row of coils in slots in a laminated steel core. The differences between rotary and linear motors are outlined and reasons for the slow application of linear motors are explained. Principal developments in linear machines since the 1950s are described. Induction motor which can be used to power capsules in an xv capsules in a pneumatic capsule pipeline system. Several optimal design schemes of a single sided linear induction motor (SLIM) adopted in linear metro are presented in this paper Firstly the  equivalent circuit of SLIM  fully considering the  end effects, half-filled slots, back iron  saturation and skin effect is proposed ,based on  one dimensional  air gap magnetic equations In the circuit,  several coefficients including longitudinal end effect coefficients Kr(s) and Kx(s), transversal end edge effect coefficients Cr(s) and Cx (s), and skin effect coefficient K fare achieved by using the dummy electric potential method and complex power equivalence between primary and secondary sides Furthermore, several optimal design restraint  equations of SLIM are provided in order to improve the operational efficiency and reduce the primary weight. The result tries to establish a new concept for elevators through a new construction technique and assembly of the system with counterweight, which increases the reliability and comfort with cost reduction.
VL  - 3
IS  - 4
ER  -

Copy | Download