Analytical Modeling of an Axial Field Magnetic Coupler With Cylindrical Magnets

Belguerras, Lamia; Mezani, Smaïl; Lubin, Thierry

doi:10.1109/tmag.2020.3005949

Cited by 16 publications

(8 citation statements)

References 8 publications

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“…It is widely used in industrial applications that require sealed isolation between the drive side and the load side through the isolation wall of air, vacuum, fuid, or other media, such as the mining and metallurgical industry, chemical industry, oil and gas industry, nuclear power, and military manufacturing feld [4]. Moreover, it was also used in magnetic drive pumps and magnetic mixers for seal-less applications, such as pharmaceutical and food industries [5].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Disk Magnetic Coupler Based on Orthogonal Test and Multiobjective Genetic Algorithm

Gong

Jiang

2023

Mathematical Problems in Engineering

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In order to solve the optimization problem of the disk magnetic coupler, the two optimization schemes, the orthogonal test and multiobjective genetic algorithm, were used to optimize the disk magnetic coupler to maximize the magnetic torque while reducing the eddy current loss, and then the correctness of the optimization results was verified by electromagnetic simulation experiments. The eddy current loss and magnetic torque of the optimized disk magnetic coupler were normalized by using the comprehensive evaluation function. After orthogonal test and multiobjective genetic algorithm optimization, the comprehensive evaluation value of the disk magnetic coupler increased by 2.43 times and 3.30 times, respectively, and the optimization effect of multiobjective genetic algorithm is more significant. The relative errors between theoretical and simulated values of the maximum magnetic torque and eddy current loss by multiobjective genetic algorithm are 2.22%–4.72% and 1.13%–6.41%, respectively, suggesting that the optimization method is feasible. The research results show that the multiobjective genetic algorithm optimization can significantly improve the performance of magnetic disk coupler, which can provide theoretical and technical basis for the design of disk magnetic coupler.

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Section: Introductionmentioning

confidence: 99%

Optimization of Disk Magnetic Coupler Based on Orthogonal Test and Multiobjective Genetic Algorithm

Gong

Jiang

2023

Mathematical Problems in Engineering

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“…Eddy current has a great influence on the transmission performance of magnetic coupler [1]- [2]. To solve the influence of eddy current, Zhang Jun designed a new copper sleeve magnetic coupler with a good heat dissipation structure [3]; In 2018, Fang Cheng analyzed the harm of temperature caused by eddy current loss to the magnetic coupler and proposed an improved method [4]; In 2021, L. Belguerras et al proposed a two-dimensional analytical method for disk-type magnetic couplers and verified the correctness of the method, but did not analyze the effect of eddy currents [5]. In 2019, H. Xu et al proposed a new type of compound magnetic coupler, which reduces the ferromagnetic material but does not explicitly calculate the eddy current [6].…”

Section: Introductionmentioning

confidence: 99%

Eddy Current Magnetic Field Analysis of Disk Synchronous Magnetic Coupler

Wu²,

Ye³

2022

J. Phys.: Conf. Ser.

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Aiming at the problem that the eddy current loss generated by the metal isolation sleeve of the disc type synchronous magnetic coupler affects its transmission performance, this paper firstly deduces the equation of eddy current loss from the theory, then analyzes the influence of the difference in rotation angles and rotation speed on the eddy current loss, and also studies the influence of the induced magnetic field generated by the eddy current on the air gap magnetic field. Through simulation, it is concluded that: the smaller the difference in turning angle or the larger the rotational speed produces the greater eddy current loss; the influence of the induced magnetic field on the air gap magnetic field is different from different turning angles differences. The conclusion is of guiding significance to reduce the eddy current loss and improve the transmission performance of the magnetic coupler.

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“…As the third approach, the analytical methods derived from simplified boundary conditions and Maxwell's equations are more insightful than the FEM and more accurate than the LPMCM [15][16][17][18][19][20][21][22][23][24][25]. The two most general methods in analytical calculations are magnetic vector potential (MVP) and magnetic scalar potential (MSP).…”

Section: Introductionmentioning

confidence: 99%

“…In [19], the authors calculate the magnetic field distribution of an ECC equipped with disk magnets and high-temperature superconducting pancake coils by assuming an infinite radius of the ferromagnetic yokes. Two-dimensional MSP is also used in an axial field magnetic coupler by assuming the yokes have an infinite radius [20]. In [21,22], 3D MSP is used in the magnet region as well as air gaps for a cylindrical ECC with two-segment Halbach magnets and axial-flux ECCs.…”

Section: Introductionmentioning

confidence: 99%

General 3D Analytical Method for Eddy-Current Coupling with Halbach Magnet Arrays Based on Magnetic Scalar Potential and H-Functions

Jin

et al. 2021

Energies

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Rapid and accurate eddy-current calculation is necessary to analyze eddy-current couplings (ECCs). This paper presents a general 3D analytical method for calculating the magnetic field distributions, eddy currents, and torques of ECCs with different Halbach magnet arrays. By using Fourier decomposition, the magnetization components of Halbach magnet arrays are determined. Then, with a group of H-formulations in the conductor region and Laplacian equations with magnetic scalar potential in the others, analytical magnetic field distributions are predicted and verified by 3D finite element models. Based on Ohm’s law for moving conductors, eddy-current distributions and torques are obtained at different speeds. Finally, the Halbach magnet arrays with different segments are optimized to enhance the fundamental amplitude and reduce the harmonic contents of air-gap flux densities. The proposed method shows its correctness and validation in analyzing and optimizing ECCs with Halbach magnet arrays.

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Analytical Modeling of an Axial Field Magnetic Coupler With Cylindrical Magnets

Cited by 16 publications

References 8 publications

Optimization of Disk Magnetic Coupler Based on Orthogonal Test and Multiobjective Genetic Algorithm

Optimization of Disk Magnetic Coupler Based on Orthogonal Test and Multiobjective Genetic Algorithm

Eddy Current Magnetic Field Analysis of Disk Synchronous Magnetic Coupler

General 3D Analytical Method for Eddy-Current Coupling with Halbach Magnet Arrays Based on Magnetic Scalar Potential and H-Functions

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