An Axial Flux Focusing Magnetically Geared Generator for Low Input Speed Applications

Kouhshahi, Mojtaba Bahrami; Bird, Jonathan Z.; Acharya, Vedanadam M.; Li, Kang; Calvin, Matthew; Modaresahmadi, Sina

doi:10.1109/tia.2019.2946120

Cited by 19 publications

(8 citation statements)

References 19 publications

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“…Two types of axial-flux MGPM machine as shown in Figure 35 are proposed in refs. [150,151] to employ the advantages of the axial structure over radial pattern.…”

Section: Magnetically-geared Pm Machinementioning

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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“…Two types of axial-flux MGPM machine as shown in Figure 35 are proposed in refs. [150,151] to employ the advantages of the axial structure over radial pattern.…”

Section: Magnetically-geared Pm Machinementioning

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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“…In [15], a new axial-flux magnetically geared permanent magnet machine was proposed for power split application in a hybrid electric vehicle. Kouhshahi et al [16] have proposed a novel magnetically geared generator for low-speed applications with a torque density of 114 kNm/m 3 . In [17], parametric sweep analysis has been used to increase the torque density of axial-flux magnetically geared ocean generators.…”

Section: Introductionmentioning

confidence: 99%

“…Kouhshahi et al. [16] have proposed a novel magnetically geared generator for low‐speed applications with a torque density of 114 kNm/m 3 . In [17], parametric sweep analysis has been used to increase the torque density of axial‐flux magnetically geared ocean generators.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of an axial magnetic gear by using particle swarm optimisation method

Sepaseh

Rostami

Feyzi

et al. 2022

IET Electric Power Appl

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This paper introduces a multi‐objective optimal design for an axial magnetic gear (AMG). In this study, the condition for high torque density and low cogging torque was deduced while the cost of the active materials was also reduced. The number and direction of permanent magnets and their arrangement were unchanged in the optimisation process, and the considered AMG's main dimensions were optimised using the particle swarm optimisation method. The optimised AMG was compared with the latest and similar structures with a relatively high torque density. To extract the produced torque density and cogging torque, three‐dimensional (3D) finite element analyses were conducted. The results showed that while torque density increased and cogging torque decreased, the total volume and magnetic materials used decreased significantly.

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“…In addition, this structure reduces the dimensions and the overall weight of the magnetic gear [27]. Second, torque density can be increased by insertion of the PMs inside the rotor, which is referred to as the interior permanent magnet (IPM) [28][29][30][31][32]. In addition, the other way of enhancement of the torque density is to change magnetization directions of PMs based on the Halbach PM arrays [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Novel Structured High Torque Density Magnetic-Geared Permanent Magnet Machine

et al. 2021

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The main limitation of magnetic gears is their relatively low torque density. Therefore, a novel structured high torque density magnetic-geared permanent magnet (MGPM) machine, which combines the advantages of a conventional MGPM machine and magnetic gear to enhance the torque considerably and achieve low-speed high-torque operation, is proposed in this study. However, there are different structures for increasing torque of a machine. Therefore, in order to demonstrate the advantages of the proposed structure, it is compared with other structures, using the finite element method. Moreover, the proposed MGPM machine can transmit an additional 42.3% of torque density when compared with the conventional MGPM machine of the same size.INDEX TERMS Bi-directional flux modulating, bread-Loaf shaped permanent magnet, dual-layer permanent magnet excitations, electrical continuously variable transmission (E-CVT), Halbach permanent magnet arrays, MGPM machine, torque density.

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An Axial Flux Focusing Magnetically Geared Generator for Low Input Speed Applications

Cited by 19 publications

References 19 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

Optimal design of an axial magnetic gear by using particle swarm optimisation method

Analysis and Design of Novel Structured High Torque Density Magnetic-Geared Permanent Magnet Machine

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