"Plastic" electric motors: a viable solution for axial flux machines

Profumo, F.; Eastham, Fred; Tenconi, Alberto; Gianolio, G.

doi:10.1109/isie.2002.1026033

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…The added unsprung mass does not impair driving comfort or safety [1], [2]. Among all types of electric machines, axial flux machines provide the highest torque to volume ratio if the radial diameter is not strictly limited [3], [4]. The most efficient, light weighted topology is the air cored axial flux machine equipped with magnets in Halbach arrangement [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Ironless in-wheel hub motor design by using multi-domain finite element analyses

Winter

Ucsnik²,

Rudolph

et al. 2012

International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion

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In this paper, a lightweight ironless axial flux permanent magnet drive concept is presented. The in-wheel hub motor has a high torque to weight ratio and achieves a high efficiency, which extends the operation range of battery powered vehicles. The steps from preliminary design to manufacturing of the components are described. The paper includes Finite Element Analyses in different physical domains.

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Section: Introductionmentioning

confidence: 99%

Ironless in-wheel hub motor design by using multi-domain finite element analyses

Winter

Ucsnik²,

Rudolph

et al. 2012

International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion

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“…In Refs. [52,60], the feasibility of replacing the rotor and stator with non-ferromagnetic materials was comprehensively analyzed in terms of magnetic flux path, selection of alternate materials, manufacturing techniques, and production and cost advantages. Moreover, thermoplastics such as Polybenzimidazole (PBI), Polyamide imide (PAI), Polyphenylene sulfide (PPS), and Polyether ether ketone (PEEK) that satisfy the mechanical strength and thermal stability of a motor rotor have been introduced.…”

Section: Materials Optimizationmentioning

confidence: 99%

Review of Design and Control Optimization of Axial Flux PMSM in Renewable-energy Applications

Zhao

Wang

et al. 2023

Chin. J. Mech. Eng.

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Axial flux permanent magnet synchronous motors (AFPMSMs) have been widely used in wind-power generation, electric vehicles, aircraft, and other renewable-energy applications owing to their high power density, operating efficiency, and integrability. To facilitate comprehensive research on AFPMSM, this article reviews the developments in the research on the design and control optimization of AFPMSMs. First, the basic topologies of AFPMSMs are introduced and classified. Second, the key points of the design optimization of core and coreless AFPMSMs are summarized from the aspects of parameter design, structure design, and material optimization. Third, because efficiency improvement is an issue that needs to be addressed when AFPMSMs are applied to electric or other vehicles, the development status of efficiency-optimization control strategies is reviewed. Moreover, control strategies proposed to suppress torque ripple caused by the small inductance of disc coreless permanent magnet synchronous motors (DCPMSMs) are summarized. An overview of the rotor-synchronization control strategies for disc contra-rotating permanent magnet synchronous motors (CRPMSMs) is presented. Finally, the current difficulties and development trends revealed in this review are discussed.

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“…[41] that employed a buried magnet rotor and ironless coil supported with back iron. Some other design aspects, such as applying plastic motor structure in the coreless DSSR topology, were discussed [42, 43]. The above literature supports coreless DSSR topology with some obvious advantages.…”

Section: Substantive Analysismentioning

confidence: 99%

A systematic review on current research and developments on coreless axial‐flux permanent‐magnet machines

Habib

Zainuri

Seng

et al. 2022

IET Electric Power Appl

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In recent years, coreless axial-flux permanent-magnet (AFPM) machines have been gaining attention. Being coreless, these machines do not experience eddy current (hence hysteresis losses) and has lower cogging torque leading to higher efficiency. However, limitations such as high leakage flux and weak mechanical structure impede its wide application. The results of a systematic review on coreless AFPM machine research is presented, wherein a total of 123 studies have been selected through the Preferred Reported Items for Systematic Reviews and Meta-Analysis (PRISMA) protocol. About 55% of the articles have been published between 2017 and 2021, indicating recent attention of the researchers on coreless AFPM machines. More than 70% (87 out of 123) of the records have been published by IEEE, which proves the quality and acceptance of the studies. In two-thirds (77 out of 123) of the studies, single-stator double-rotor has been adopted as the machine topology, and in 71.8% (84 out of 123) cases, trapezoidal shape magnets have been used in conventional array. The key research areas on coreless AFPM identified through this review are to produce an efficient design for multiphase and multistage topology and develop lightweight rotor and stator structures.

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"Plastic" electric motors: a viable solution for axial flux machines

Cited by 10 publications

References 39 publications

Ironless in-wheel hub motor design by using multi-domain finite element analyses

Ironless in-wheel hub motor design by using multi-domain finite element analyses

Review of Design and Control Optimization of Axial Flux PMSM in Renewable-energy Applications

A systematic review on current research and developments on coreless axial‐flux permanent‐magnet machines

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