An Improved Magnetic Equivalent Circuit Model for Iron-Core Linear Permanent-Magnet Synchronous Motors

Sheikh-Ghalavand, B.; Vaez‐Zadeh, Sadegh; Isfahani, Arash Hassanpour

doi:10.1109/tmag.2009.2030674

Cited by 143 publications

(72 citation statements)

References 35 publications

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“…Thus we have used more proper and convenient expression with the total magnetic flux value = Φ ℎ . (12) In Fig. 10, the magnetic force values vs. the current intensity values, are presented.…”

Section: Reluctance Network Modelmentioning

confidence: 99%

Reluctance Network Model of a Permanent Magnet Tubular Motor

Waindok

Tomczuk

2017

Acta Mechanica Et Automatica

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Abstract:The reluctance network model of a permanent magnet tubular motor (PMTM) has been presented in the paper. The reluctance values of the magnetic circuit have been calculated with using analytical expressions. The air gap reluctance has been determined with using both analytical expressions and the finite element method (FEM). Using the calculation model, the flux values coupled with the windings have been obtained and used in the calculations of force value. The calculated results have been compared with numerical and measured ones.

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Section: Reluctance Network Modelmentioning

confidence: 99%

Reluctance Network Model of a Permanent Magnet Tubular Motor

Waindok

Tomczuk

2017

Acta Mechanica Et Automatica

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“…7 [mm] for distributed winding 6pole 36slot model, tooth width with 7.2[mm] for 8pole 48slot model, 9.0[mm] concentrated winding 6pole 9slot mode, 7.0[mm] for 10pole 15slot model. This means that tooth/yoke width at maximum no-load Back-EMF is equal to tooth/yoke width at maximum load torque.…”

Section: Finite Element Analysis For Stator Tooth/yoke Widthsmentioning

confidence: 99%

“…Thus in this study, instead of suffering slight accuracy compared to FEA, we propose an equivalent magnetic circuit of stator, which allows fast and simple calculations for finding tooth and yoke width that optimize load torque [6][7][8]. Generally Back-EMF and load torque show the greatest values for the tooth and yoke width ratio that has the smallest magnetic resistance to magnetomotive force of permanent magnet.…”

Section: Introductionmentioning

confidence: 99%

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Kim¹,

Kim²,

Moon³

2016

Journal of Magnetics

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The shape optimization of the stator and the rotor is important for electrical motor design. Among many motor design parameters, the stator tooth and yoke width are a few of the determinants of noload back-EMF and load torque. In this study, we proposed an equivalent magnetic circuit of motor stator for efficient stator tooth and yoke width shape optimization. Using the proposed equivalent magnetic circuit, we found the optimal tooth and yoke width for minimal magnetic resistance. To verify if load torque is truly maximized for the optimal tooth and yoke width indicated by the proposed method, we performed finite element analysis (FEA) to calculate load torque for different tooth and yoke widths. From the study, we confirmed reliability and usability of the proposed equivalent magnetic circuit.

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“…The slot and end effects of LPMSMs can be accounted for by the magnetic equivalent circuit (MEC) which is widely used due to its simplicity and fast computation [12][13][14][15][16][17]. In [13], a relatively simple and accurate MEC model is proposed for LPMSMs and the air gap flux density distribution is obtained by linear interpolation of flux densities at specific mover positions.…”

Section: Introductionmentioning

confidence: 99%

No-Load Magnetic Field and Cogging Force Calculation in Linear Permanent-Magnet Synchronous Machines With Semiclosed Slots

Zhao

Liu

et al. 2017

IEEE Trans. Ind. Electron.

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Abstract-This paper presents an improved analytical subdomain model for predicting the magnetic field in linear permanent magnet synchronous machines (LPMSMs) with semi-closed slots accounting for the finite length of primary iron core and secondary back-iron. The whole field domain is divided into eight subdomains and the magnetic field in each subdomain is solved by applying the variable separation method, adequate boundary conditions and interface conditions. In this model, both the slot and end effects are considered. The thrust and normal forces are calculated by the Maxwell stress theory. The finite element analysis is carried out to validate the analytical model. Finally, an LPMSM prototype is manufactured and tested. The experimental results show that the developed analytical model has high accuracy for predicting the magnetic field and forces.Index Terms-Linear PM machines, improved analytical model, slot effect, end effect.

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An Improved Magnetic Equivalent Circuit Model for Iron-Core Linear Permanent-Magnet Synchronous Motors

Cited by 143 publications

References 35 publications

Reluctance Network Model of a Permanent Magnet Tubular Motor

Reluctance Network Model of a Permanent Magnet Tubular Motor

Stator Shape Optimization for Electrical Motor Torque Density Improvement

No-Load Magnetic Field and Cogging Force Calculation in Linear Permanent-Magnet Synchronous Machines With Semiclosed Slots

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