Design optimization of double-sided permanent-magnet radial-flux eddy-current couplers

Mohammadi, Sajjad; Mirsalim, Mojtaba

doi:10.1016/j.epsr.2013.11.014

Cited by 65 publications

(34 citation statements)

References 25 publications

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“…However, they are still CPU time consuming and therefore poorly suited to be used in a design optimization procedure. In order to reduce the computational time, magnetic equivalent circuit (MEC) modeling coupled with thermal networks model have recently been developed [8,9]. It has been shown that this method gives accurate results compared to FE simulations and tests.…”

Section: Introductionmentioning

confidence: 99%

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Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

et al. 2018

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This paper presents a design optimization of an axial-flux eddy-current magnetic coupling. The design procedure is based on a torque formula derived from a 3D analytical model and a population algorithm method. The main objective of this paper is to determine the best design in terms of magnets volume in order to transmit a torque between two movers, while ensuring a low slip speed and a good efficiency. The torque formula is very accurate and computationally efficient, and is valid for any slip speed values. Nevertheless, in order to solve more realistic problems, and then, take into account the thermal effects on the torque value, a thermal model based on convection heat transfer coefficients is also established and used in the design optimization procedure. Results show the effectiveness of the proposed methodology.

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Section: Introductionmentioning

confidence: 99%

“…It has been shown that this method gives accurate results compared to FE simulations and tests. The main drawback of the MEC method is that the flux paths must be a priori known in order to define the reluctance expressions which appear in the torque expression [9].…”

Section: Introductionmentioning

confidence: 99%

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

et al. 2018

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“…Through transformation, we can obtain ω s = 2πsn 1 (13) where n 1 is the revolving speed of the loading motor, that is, the input speed in r/m. Electromotive forces of the axial copper plate (ε a ) and the radial copper ring (ε r ) can be calculated according to the following formulas, separately.…”

Section: Total Eddy-current Loss Modelmentioning

confidence: 99%

“…Besides, a contactless rotational speed meter was also adopted to test the revolving speed value obtained after changing the speed of the input motor and acquiring the stable output revolving speed. Finally, the slip ratio between permanent magnet rotor and the copper conductor rotor of the experimental prototype was calculated according to Equation (13).…”

Section: Experimental Verificationmentioning

confidence: 99%

“…While Sun Zhongsheng et al perform an in-depth study on the magnetic field and mechanical characteristics of the permanent magnet governor of a barrel structure [11], Zhang Meng et al probe into speed control performance and energetic efficiency of the vertical flux permanent magnetic coupling [12]. In addition, Zhang Hongjun et al simulate starting and decoupling processes of the magnetic coupling so that the judging criteria for simple starting and decoupling are verified [13]. Based on an analytical method, Kim et al propose linear coupling characteristics…”

Section: Introductionmentioning

confidence: 99%

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Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis

et al. 2017

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Specific to a problem of large vibro-impact aris ing from the cutting unit of the hard rock tunnel boring machine (TBM), a hybrid magnetic coupler based on soft start was proposed in this paper. The mathematical model for total eddy current losses of such a coupler was established by field-circuit method. Then, magnetic-thermal coupling simulation was performed by virtue of three-dimensional finite element software. In addition, an experimental prototype was independently designed; by comparing the model with experimental data, validity of the above mathematical model was verified. The relevant research results indicated that calculated values were consistent with experimental values, and the magneto thermal coupling method could be applied to accurately analyze temperature distribution of the hybrid magnetic coupler. By contrast to the existing magnetic coupling of the same dimension, output efficiency of the hybrid magnetic coupler was improved by 1.2%. Therefore, this research technique can provide references for designing the cutting unit of hard rock TBM with a high start impact.

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Multi-parameter optimization analysis of permanent magnet couplings using response surface methodology and genetic algorithm

Ni,

Li,

Sun

et al. 2024

J Mech Sci Technol

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Design optimization of double-sided permanent-magnet radial-flux eddy-current couplers

Cited by 65 publications

References 25 publications

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis

Multi-parameter optimization analysis of permanent magnet couplings using response surface methodology and genetic algorithm

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