Optimisation of magnetic gears for large wind turbines

Penzkofer, Andreas; Atallah, K.

doi:10.1109/eeeic.2015.7165293

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…As shown in Figure 39(a), substitution of the mechanical gears by the FMMGs proves to be an efficient approach to improve the reliability of wind-turbine drive train because that the power transformation could be accomplished in a contactless manner, together with which the lubrication is reduced and inherent overload protection is accessible [157][158][159][160][161][162]. As displayed in Figure 39(b), the system torque density could be further improved by applying the MGPM generator to replace both the FMMG and the DFIG [163][164][165].…”

Section: Potential Applicationsmentioning

confidence: 99%

A review on the field‐modulated magnetic gears: Development status, potential applications, and existent challenges

Yan,

Li,

Wang

et al. 2023

IET Electric Power Appl

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As a type of magnetic device being able to realize contact‐free power transmission together with sufficient volumetric torque density, the field‐modulated magnetic gear (FMMG) has become a promising alternative to the mechanical gear having rigid construction yet suffering lots of issues generated by the continuous teeth friction. The conventional magnetic gears (MGs) that behave as simple copies of their mechanical counterparts and can be roughly defined as origination of the FMMG are briefly introduced at first. Subsequently, the topology and material advancements proposed to improve operational performance of the FMMG are comprehensively summarised so as to clarify its current development status. Finally, potential applications of the FMMG due to its inherent advantages are compared against the existent challenges. The review aims to provide referable guidelines for researchers working at the field of high‐performance MGs.

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Section: Potential Applicationsmentioning

confidence: 99%

A review on the field‐modulated magnetic gears: Development status, potential applications, and existent challenges

Yan,

Li,

Wang

et al. 2023

IET Electric Power Appl

View full text Add to dashboard Cite

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“…In other recent researches, there are plenty of optimum designs for magnetic gear [17,18,19]. These papers reveal the optimum geometric design either for high torque capacity or ef iciency.…”

Section: Optimum Designmentioning

confidence: 99%

Transmitted Torque Analysis of Coaxial Magnetic Gears with Different Pole-Pair Numbers

Tsai

2019

J. ICT des. eng. technol. sci.

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Transmitted torque is an important performance index of coaxial magnetic gears. This study focuses on the effects of pole-pair numbers on the maximum torque capacity and torque ripple of coaxial magnetic gearsOwing to the magnetic resistance between the pole piece and the medium of air; a torque ripple is generated during magnetic gear operation. In magnetic gear design, maximum torque capacity is considered the higher, the better, and the torque ripple should be the lower, the better. A commercial Finite-element analysis software AN-SYS/Maxwell 2D is applied to simulate the transmitted torque and torque ripple of coaxial magnetic gears by solving the magnetic ield, and mechanical motion coupled models. Model parameters, including size and inertia, are designed via the Autodesk/Inventor. The results of initeelement analysis have shown that there are certain relationships between pole-pair numbers and torque performance. It reveals that the sum of the pole-pair numbers is inversely proportional to the maximum torque capacity; the differences of maximum torque between different polepair number designs could be up to 82%. However, the torque ripple has not been proven for the relationship. For future research, the torque capability per cost would be necessary for magnetic gear product, especially when the price of rare earth metal is seen rising in the past years. Also, the ef iciency of magnetic gear is still important for powertrain system, but it's not easy to reach both high torque and ef iciency, owing to the lux saturation problem. The balance of torque capacity, ef iciency, and cost would be the next challenge.

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Optimization Design and Dynamic Characteristics Analysis of Multistage Magnetic Gearbox for MW-scale Wind Turbine

Qin

Qiu

Cai

2023

J. Electr. Eng. Technol.

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Optimisation of magnetic gears for large wind turbines

Cited by 8 publications

References 8 publications

A review on the field‐modulated magnetic gears: Development status, potential applications, and existent challenges

A review on the field‐modulated magnetic gears: Development status, potential applications, and existent challenges

Transmitted Torque Analysis of Coaxial Magnetic Gears with Different Pole-Pair Numbers

Optimization Design and Dynamic Characteristics Analysis of Multistage Magnetic Gearbox for MW-scale Wind Turbine

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