Design of a Multiphase Coreless Axial Flux Permanent Magnet Machine for Unmanned Aerial Vehicle Propulsion

Marcolini, Federico; Donato, Giulio De; Capponi, Fabio Giulii; Incurvati, M.; Caricchi, F.

doi:10.1109/ecce44975.2020.9235625

Cited by 9 publications

(8 citation statements)

References 11 publications

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“…In Ref. [120], a multiphase concept in the coreless stator in AFPM machines was introduced for the first time, where design optimisation was done for coreless stator AFPM topology by using Litz wire and PCB stator. Using coreless stator in AFPM machine, prototype implementation had been performed for the issue of analytical analysis [59], design and optimisation [2,28,50,74], electromagnetic and thermal analysis [55], winding design [16], coil pole ratio [56], sensitivity analysis [57], eccentricity and demagnetising fault analysis [64], structural analysis [75] and comparative analysis [58].…”

Section: Coreless Part and Winding Patternmentioning

confidence: 99%

“…In Ref. [120] a multiphase concept in coreless SSDR was applied using a trapezoidal magnet with both conventional and Halbach arrangements for designing fault-tolerant and higher efficient AFPM machines especially for unmanned aerial vehicle application. For coreless topology design, modelling, optimisation, and prototyping had been performed using trapezoidal magnet with conventional arrangement in Ref.…”

Section: Magnet Geometry and Arrangementmentioning

confidence: 99%

“…In Ref. [120], a multiphase coreless AFPM machine was designed with concentrated windings for the propulsion of an unmanned aerial vehicle. Authors pointed out that such a system requires very high power and torque densities, contrasting with other important requirements such as high efficiency and resilience.…”

Section: Electric Vehicles Aircraft and Ship Propulsionmentioning

confidence: 99%

“…Solar car [120] Multiphase coreless AFPM machine with concentrated windings requires very high power and torque densities Unmanned aerial vehicle (UAV) [2] Systematic comparison of the conventional and coreless topologies Solar-powered vehicle [101] Significant reduction in inactive mass in AFPM generators can be realised by using multiple stages that can boost power output…”

Section: Refmentioning

confidence: 99%

“…Since the coreless AFPM machine itself has high power density, less cogging torque, less torque ripple and higher efficiency, implementing multi‐phase order will enhance the performance in terms of fault tolerance and resilience. But, only one article [120] out of the 123 articles reviewed in this study discussed multi‐phase coreless topology. Hence, further investigation with multi‐phase and multi‐stage configurations with coreless topology is pressing to attain high‐performance machine.…”

Section: Future Research Scopementioning

confidence: 99%

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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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