Research on Permanent Magnet Linear Synchronous Motor for Rope-less Hoist System

Wang, Xudong; Feng, Haichao; Xu, Baoyu; Xu, Xiaozhuo

doi:10.4304/jcp.7.6.1361-1368

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…In the same way as in permanent magnet RMs, LPMSMs show an excellent thrust force density, efficiency, power factor and controllability [83], [85], [89]. Their advantages make them a strong candidate for applications such as ropeless elevators [76], [80], [177], factory automation [78] and high precision machine tooling [177]- [179].…”

Section: Linear Permanent Magnet Machinesmentioning

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 Permanent Magnet Machinesmentioning

confidence: 99%

“…Conventional methods for dealing with the cogging force of LMs are equally effective in LMs. Fractional-slot designs are a good solution to reduce the cogging force [80]. PM-arc adjustment, semi-closed slots and asymmetric PM arrangements [69] are also another option to reduce the cogging effect.…”

Section: B Thrust Force Ripplementioning

confidence: 99%

Linear Machines for Long Stroke Applications—A Review

et al. 2020

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“…Since the research on ''SW-PMLSM vertical lifting system'', the Institute of Electrical Application of Henan Polytechnic University has made great progress in solving magnetic field, analyzing and calculating magnetic field characteristics [13]- [18], At present, the laboratory has built the most advanced ''SW-PMLSM industrial testing machine model '' in China.…”

Section: Introductionmentioning

confidence: 99%

Research on High Efficiency V/f Control of Segment Winding Permanent Magnet Linear Synchronous Motor

2019

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By analyzing the relationship between the electromagnetic parameters and the secondary position during the primary and secondary coupling transition of the segment winding permanent magnet linear synchronous motor (SW-PMLSM), the variable parameter mathematical model of the rotor side of the SW-PMLSM is established. Taking the three-stage primary lifting system as an example, the dynamic process of the whole system is simulated and analyzed. According to the characteristics of its parameters, the segmentation vector control is obtained as the best stability control method. However, in practical applications, in order to save costs, the segmented linear motor often adopts the effective section parallel power supply mode, and the SW-PMLSM parallel power supply model is obtained by approximate simplification. This paper proposes a SW-PMLSM high-efficiency V/f control method, which combines the advantages of traditional V/f control and field-oriented control. It does not need to install position sensor, and can realize simple and high-performance motor drive. Finally, simulation and experimental results are provided to validate the effectiveness of the fidelity of the proposed strategy.INDEX TERMS SW-PMLSM, vector control, effective segment parallel power supply, variable parameter mathematical model, simulation modeling, efficient V/f control.

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“…Hence, several kinds of linear machines have been investigated for cableless elevators. In [3], a linear permanent magnet (PM) synchronous machine (LPMSM) is adopted for cableless elevators because of its high efficiency and high power density, in which the armature windings are laid along the hoistway and can be controlled section by section according to the elevator vehicle position. PMs are installed on the elevator vehicle.…”

Section: Introductionmentioning

confidence: 99%

Detent Force Reduction of a C-Core Linear Flux-Switching Permanent Magnet Machine with Multiple Additional Teeth

Yang

Quan

et al. 2017

Energies

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C-core linear flux-switching permanent magnet (PM) machines (LFSPMs) are attracting more and more attention due to their advantages of simplicity and robustness of the secondary side, high power density and high torque density, in which both PMs and armature windings are housed in the primary side. The primary salient tooth wound with a concentrated winding consists of C-shaped iron core segments between which PMs are sandwiched and the magnetization directions of these PMs are adjacent and alternant in the horizontal direction. On the other hand, the secondary side is composed of a simple iron core with salient teeth so that it is very suitable for long stroke applications. However, the detent force of the C-core LFSPM machine is relatively high and the magnetic circuit is unbalanced due to the end effect. Thus, a new multiple additional tooth which consists of an active and a traditional passive additional tooth, is employed at each end side of the primary in this paper, so that the asymmetry due to end effect can be depressed and the detent force can be reduced by adjusting the passive additional tooth position. By using the finite element method, the characteristics and performances of the proposed machine are analyzed and verified.

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Research on Permanent Magnet Linear Synchronous Motor for Rope-less Hoist System

Cited by 14 publications

References 4 publications

Linear Machines for Long Stroke Applications—A Review

Linear Machines for Long Stroke Applications—A Review

Research on High Efficiency V/f Control of Segment Winding Permanent Magnet Linear Synchronous Motor

Detent Force Reduction of a C-Core Linear Flux-Switching Permanent Magnet Machine with Multiple Additional Teeth

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