3D Modelling of a Coaxial Magnetic Gear

Mateev, Valentin; Todorova, Miglenna; Marinova, Iliana

doi:10.1109/bulef48056.2019.9030769

Cited by 4 publications

(6 citation statements)

References 5 publications

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“…After the 3D FEM modeling, the outer-rotor torque was estimated to be 112 Nm. Compared to the cylindrical CMG, with a 0 deg cone, where the magnetic torque is 175 Nm [33], a lower torque is provided by the conical CMG.…”

Section: Results Considerationmentioning

confidence: 95%

“…The magnetic flux density and magnetic field intensity results, provided in Figure 8, were used for comparison with the purely cylindrical magnetic gear flux density distribution. The results used for comparison with the cylindrical CMG were obtained from [33].…”

Section: Resultsmentioning

confidence: 99%

“…The boundary conditions satisfy the continuity of the entire modeling domain, Ht and Tt on Ω1, and the naturally appearing boundary condition Bn on the modeling domain's outer surface, represented here by the CCMG's outer-rotor yoke surface. In [33], more details regarding the T-Ω formulation implementation for 3D CMG FEM modeling are considered. The magnetic torques Tm of the two rotors are calculated based on the Virtual Work Method as a per element sum of the directional change of the total magnetic energy ∂W, rotational angle θ, and specific radius r:…”

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

“…In the surrounding region Ω 2 , including the rotors, modulating segments, and shafts, the electrical conductivity is neglected in the model, and therefore, they are considered as being free of eddy currents. In low rotational speeds (<300 rpm), the reduced number of conductive elements gives the optimal accuracy and a reduced number of DoF in 3D modeling, especially with a lack of electrical excitation [33].…”

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

“…The boundary conditions satisfy the continuity of the entire modeling domain, H t and T t on Ω 1 , and the naturally appearing boundary condition B n on the modeling domain's outer surface, represented here by the CCMG's outer-rotor yoke surface. In [33], more details regarding the T-Ω formulation implementation for 3D CMG FEM modeling are considered.…”

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

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Design Aspects of Conical Coaxial Magnetic Gears

2023

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In this paper, a new design of a conical coaxial magnetic gear was proposed. Conical magnetic gears are considered a logical link between the radial- and axial-field coaxial designs. The modeling of magnetic torques based on the 3D finite element method was developed. The design parameter variations of the conical coaxial magnetic gear were determined and discussed. The magnetic torque density was calculated and compared with that of a cylindrical coaxial magnetic gear with the same size and materials used. An optimal cone angle based on the air-gap length was proposed. Multistage conical coaxial magnetic gears were proposed as a sequence of coupled rotors with increased torque density and reduced magnetic reluctance. The proposed conical coaxial magnetic gears are more compact in size and suitable for integration with electrical machines and variable transmissions.

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Section: Results Considerationmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

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