Designing and experimentally testing a flux‐focusing axial flux magnetic gear for an ocean generator application

Kouhshahi, Mojtaba Bahrami; Acharya, Vedanadam M.; Calvin, Matthew; Bird, Jonathan Z.

doi:10.1049/iet-epa.2018.5931

Cited by 17 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the radial-flux structure, the FMMG can be built in the axial-flux frames [65][66][67][68][69][70][71][72][73][74] as shown in Figure 11. The axial-flux FMMG is preferred particularly in applications requiring flat outside shapes and hermetic isolation between the input and output shafts [75].…”

Section: Direction Of Magnetic Fluxmentioning

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

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.

show abstract

Section: Direction Of Magnetic Fluxmentioning

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

show abstract

“…The former, e.g. 2D and 3D finite‐element method (FEM) as employed for radial and axial‐flux machines [1–4], although precise, are very time‐consuming and not suitable for the preliminary designs, while analytical approaches provide fast, flexible and relatively accurate calculations, introducing a powerful tool for the design procedure. The second technique may be divided into two categories: first, subdomain methods which are on the basis of Laplace's and Poisson's equations as used for surface‐mounted PM machines [5, 6], switched reluctance machine [7], and flux switching machine [8]; second, flux‐tube models or magnetic equivalent circuit (MEC) approaches as used for salient pole [9], flux‐switching [10], Vernier [11], and switched reluctance [12] machines as well as magnetic bearings [13].…”

Section: Introductionmentioning

confidence: 99%

Modelling of axial‐flux eddy‐current couplers

Mohammadi

Kirtley

Azari

2020

IET Electric Power Applications

View full text Add to dashboard Cite

Analytical models are widely employed in the design of electromagnetic devices. This study presents a flux‐tube model for axial‐flux eddy‐current couplers with surface magnets. Thanks to the developed three‐dimensional magnetic equivalent circuit, the proposed model is able to handle complex geometries and take into account all dimensional parameters and material properties such as iron saturation and permanent magnet (PM) characteristics. In addition, the associated practical design considerations including iron saturation, demagnetisation criteria, actual current paths, and heating conditions are analytically presented. Also, a three‐dimensional finite‐element analysis is utilised in the assessment of the model. Finally, a prototype is made to experimentally analyse the design and confirm analytical and numerical results.

show abstract

“…The finite element method (FEM) is a powerful numerical technique in the analysis of electric machines SRMs to PM machines [1][2][3][4]; however, FEM is expensive and time-consuming. On the other hand, analytical approaches are fast yet accurate alternative techniques that are very effective in preliminary designs.…”

Section: Introductionmentioning

confidence: 99%

Modelling of switched reluctance machines

Davarpanah

Mohammadi

Kirtley

2020

IET Electric Power Applications

View full text Add to dashboard Cite

Analytical models are powerful tools in the preliminary design of electric machines. In this study, a flux‐tube model is proposed for switched reluctance machines, in which all the flux paths and the corresponding elements are accurately calculated, iron saturation is intelligently taken into account and formulas are generally developed to attain a continuous model for any range of design parameters. The inductances, flux linkages, torque–angle, maximum torque–current, mean torque–current characteristics are extracted. The special structure of the developed model enables us to extract the air‐gap flux density distribution of the machine. Also, finite‐element analysis is used in the analyses and evaluation of the model. Finally, the machine has been prototyped by which torque–angle curve and open‐loop characteristics are obtained experimentally to evaluate the model. Superiorities of the proposed framework over the previous approaches are demonstrated as well.

show abstract

Designing and experimentally testing a flux‐focusing axial flux magnetic gear for an ocean generator application

Cited by 17 publications

References 31 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

Modelling of axial‐flux eddy‐current couplers

Modelling of switched reluctance machines

Contact Info

Product

Resources

About