Journal ArticleDOI
Study on Torque Calculation for Hybrid Magnetic Coupling and Influencing Factor Analysis
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TLDR
In this paper, a hybrid magnetic coupling was proposed to obtain three-dimensional magnetic field distribution of radial and axial configurations, and major influencing factors of its torque, such as lengths of axial and radial air gaps, thicknesses of axIAL and radial permanent magnets, the number of slots in axial copper rotor, etc., were analyzed.Abstract:
Specific to a problem that the present transmission of magnetic coupling torque was subjected to restrictions of its own structure, a hybrid magnetic coupling was proposed. Then, finite element method was adopted to carry out numerical calculations for its three-dimensional magnetic field to obtain three-dimensional magnetic field distribution of radial and axial configurations. Major influencing factors of its torque, such as lengths of axial and radial air gaps, thicknesses of axial and radial permanent magnets, the number of slots in axial copper rotor, thickness of axial and radial copper rotor, etc., were analyzed. The relevant results indicated that in certain conditions of shapes, ten magnetic poles of the axial permanent magnet rotor, nine of the radial permanent magnet rotor and nine slots from the axial copper rotor were used. Correspondingly, the axial copper rotor had a thickness of 20 mm and it was 5 mm for the radial copper rotor. Moreover, the maximum torque could reach 190 N.m approximately. If lengths of axial and radial air gaps increased, the torque may go down otherwise. Within a certain scope, the torque rose in the first place and then fell with increases in the permanent magnet thickness of axial permanent magnetic rotor, the number of axial and radial magnetic poles, the number of slots in axial copper rotor, and the thickness of axial copper rotor. Additionally, the number of slots in the axial copper rotor could not be equivalent to that of magnetic poles in axial permanent magnetic rotor. However, as the permanent magnet thickness of radial permanent magnetic rotor rose, the torque went up as well.read more
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References
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Development of a Single-Sided Flux Magnetic Coupler for Electric Vehicle IPT Charging Systems
TL;DR: Leakage magnetic fields have been investigated and show that circular and DD couplers operating under similar power transfer conditions produce similar levels.
Journal ArticleDOI
Magnetohydrodynamic three-dimensional flow of viscoelastic nanofluid in the presence of nonlinear thermal radiation
TL;DR: In this article, a three-dimensional flow of couple stress nanofluid in the presence of thermophoresis and Brownian motion effects is analyzed and the energy equation subject to nonlinear thermal radiation is taken into account.
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On magnetohydrodynamic three-dimensional flow of nanofluid over a convectively heated nonlinear stretching surface
TL;DR: In this paper, the authors explored the magnetohydrodynamic (MHD) three-dimensional flow of viscous nanofluid subject to convective surface boundary condition, which is generated by an impermeable surface which is stretched nonlinearly.
Journal ArticleDOI
Analytical Modeling and Analysis of Axial-Flux Interior Permanent-Magnet Couplers
TL;DR: An analytical model is developed, which is able to deal with the complex machine geometry and take into account material properties such as iron saturation and PM characteristics, which shows several advantages in terms of mechanical and magnetic performances over the couplers with surface PMs.
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Interaction of magnetic field in flow of Maxwell nanofluid with convective effect
Tasawar Hayat,Tasawar Hayat,Taseer Muhammad,Sabir Ali Shehzad,Guoqian Chen,Guoqian Chen,Ibrahim A. Abbas +6 more
TL;DR: In this article, the effect of magnetic parameters and Biot number on the temperature and nanoparticles in the presence of a constant applied magnetic field was investigated. And the resulting nonlinear system has been solved for the velocities, temperature and particle concentration distributions.