Experimental Evaluation of a 63.3:1 Dual-Stage Coaxial Magnetic Gear

Baninajar, Hossein; Modaresahmadi, Sina; Wong, Ho Yin; Bird, Jonathan Z.; Dechant, Bertrand

doi:10.1109/tec.2022.3190831

Cited by 9 publications

(2 citation statements)

References 45 publications

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“…One method to keep high torque density at high gear ratio is to use the harmonic or cycloid MGs having a single layer of air gap. The other method is to use the multistage FMMGs that can be built by simply connecting single-stage ones in series as shown in Figure 26 [114,115] or by the compound differential pattern as shown in Figure 27 [116]. The latter is able to offer gear ratio higher than that of the former but suffers circulating power flows leading to poor efficiency.…”

Section: Gear Ratiomentioning

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: Gear Ratiomentioning

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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“…Figure 2 shows the concentric magnetic gear in the production chain. Therefore, several authors have extensively studied this type of magnetic gear in various fields of application [13]- [15]. Unfortunately, these studies have shown that magnetic gears also have their limitations.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the comparison of conventional concentric magnetic gear and double stage concentric magnetic gear for high power offshore wind applications

Philippe,

Gilles,

Macaire

2024

IJAPE

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Nowadays, the replacement of mechanical technologies by magnetic technologies has several advantages. Therefore, in this paper, we compare in an indirect drive chain the conventional concentric magnetic gear (CCMG) and the double-stage concentric magnetic gear (DSCMG) used as a speed multiplier for a high-power offshore wind turbine. This comparison is performed for the same gear ratio and the same torque at the input of both magnetic gears to obtain the same torque values at the output of each gear. The goal is to determine which one has the smaller amount of magnet and the higher volumetric torque density. After the calculation of the gear ratio, a first choice of geometrical parameters is adopted. Several simulations carried out by the finite element method (FEM) allowed to obtain the desired torques and to fix the final geometrical parameters of each magnetic gear. The results obtained show that the DSCMG has both the smallest magnet volume and the highest volumetric torque density compared to the CCMG.

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