Analysis of Transverse-Flux Linear Switched-Flux Permanent Magnet Machine

Lu, Qinfen; Li, Y. X.; Huang, Xiaoyan; Ye, Y. Y.

doi:10.1109/tmag.2015.2437194

Cited by 28 publications

(4 citation statements)

References 7 publications

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“…Many different types of linear permanent magnet machines have been studied to achieve a high thrust force. A transverse flux permanent magnet linear submersible motor (TFPMLSM) is a kind of motor with a high thrust force density [9][10][11] and it is expected to be applied to oil exploitation. In the process of oil production, the submersible linear motor will produce a lot of vibrations when it works underground for a long time, resulting in the failure of the submersible electric pump system, motor damage and other problems [12].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Vibration Analysis of Transverse Flux Permanent Magnet Linear Submersible Motor for Oil Production

Zhao,

Li,

Zuo

et al. 2023

Energies

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A transverse flux linear motor is a special type of linear motor with a high thrust force density, and it has broad application prospects in the field of linear direct-drive systems. In the process of oil production, the vibration of the linear motor poses a significant amount of harm to the system due to its special slender structure. This paper focuses on the electromagnetic vibration of a transverse flux permanent magnet linear submersible motor (TFPMLSM). Firstly, the no-load air gap flux density is calculated based on the field modulation principle. Secondly, the radial electromagnetic force (REF) of the TFPMLSM is calculated, and the finite element method (FEM) is used to analyze the time-space and spectral characteristics of the REF. Then, the influence of secondary eccentricity on the frequency spectrum of the REF is further concluded. Finally, the natural frequencies of each vibration mode are calculated using the modal superposition method and the influence of the REF on the motor vibration is obtained through magnetic-structural coupling analysis. The research results found that the motor does not cause resonance at low speeds, and the fundamental frequency of REF has the greatest impact on electromagnetic vibration.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Vibration Analysis of Transverse Flux Permanent Magnet Linear Submersible Motor for Oil Production

Zhao,

Li,

Zuo

et al. 2023

Energies

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show abstract

“…Moreover, 3D‐FEM‐based analysis is used for a segmental secondary PM‐FSLM proposal and its force analysis in Ref. [8]. A Partitioned primary PM‐FSLM is addressed in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The FSLMs have two main types, which are investigated by researchers. In the first type, the PM is used for excitation [2,[7][8][9][10][11][12][13][14][15] and in the second, the field winding is employed for DC field production [1,3,[16][17][18][19]. In both the mentioned types, most of the papers are focussed on the structure proposal and characteristic analysis, where the FEM or basic analytical equations are considered for studies.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive analysis on a novel DC‐Excited Flux‐Switching Linear Motor as a new linear vehicle for transportation systems

Farhadi

Yousefi

Noorollahi

et al. 2022

IET Electric Power Appl

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A novel DC-Excited Flux-Switching Linear Motor (DC-FSLM) is investigated in this paper, where a simple secondary is used as the machine stator. The phases and excitation windings are placed on the primary, which contributes to a low-cost and simple structure linear motor with acceptable dynamic performance. The motor operation under dynamic load is analysed by a parametric Magnetic Equivalent Circuit (MEC), and the core saturation is modelled by the non-linear reluctance of the flux tubes. Moreover, the endeffect is considered by virtual zones at both entrance and exit ends of the primary. In the considered MEC, the model accuracy can be selected as desired as well as different DC-FSLMs with various properties can be modelled. Finally, the machine capabilities and performance characteristics are discussed by simulation results, and validation is performed by the Finite Element Method (FEM).This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…In recent years, a series of primary PM linear machines [6][7][8][9] such as linear flux-switching PM (LFSPM) machine [10], linear double-salient PM (LDSPM) machine [11] and linear flux-reversal PM (LFRPM) machine [12] have been developed, in which the magnets and armature windings are both located on the short mover, while the long stator only consists of iron core, thus significantly saving system costs. The research results show that the LFSPM machine can offer higher-power density than the LDSPM and LFRPM machines.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a new HTS modular flux‐switching linear machine for rail transit

Wang

et al. 2018

IET Electric Power Applications

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This study proposes a new high-temperature superconductor (HTS) modular flux-switching linear machine for rail transit, in which the armature windings and HTS field windings are placed on the short mover, while the long stator is only made of segmented low-cost iron. The key is to adopt a modular mover consisting of three separate phase modules whose positions are mutually 120° electrical degrees apart to greatly offset the cogging force for suppressing the thrust force ripple, accompanied with the features of high-fault tolerance. Also, the HTS excitation can produce stronger magnetic field than permanent magnet excitation to obtain a high force density; meanwhile, it easily regulates the air-gap flux density for achieving flexible high-speed constant-power operation. The operation principle and general design method of the proposed machine with concerning the HTS-excitation pattern are described in details. By using the finite element analysis, the machine performances are comparatively analysed with its counterpart without using modular mover to verify its validity. The results show that the proposed machine can offer more sinusoidal back electromotive force, better fault tolerance, higher thrust force and smaller force ripple.

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Analysis of Transverse-Flux Linear Switched-Flux Permanent Magnet Machine

Cited by 28 publications

References 7 publications

Electromagnetic Vibration Analysis of Transverse Flux Permanent Magnet Linear Submersible Motor for Oil Production

Electromagnetic Vibration Analysis of Transverse Flux Permanent Magnet Linear Submersible Motor for Oil Production

A comprehensive analysis on a novel DC‐Excited Flux‐Switching Linear Motor as a new linear vehicle for transportation systems

Design and analysis of a new HTS modular flux‐switching linear machine for rail transit

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