Novel design of a coreless axial‐flux permanent‐magnet generator with three‐layer winding coil for small wind turbines

Yao, Wu-Sung; Cheng, Ming-Te; Yu, Jyh-Cheng

doi:10.1049/iet-rpg.2019.0908

Cited by 12 publications

(13 citation statements)

References 18 publications

(21 reference statements)

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“…In Ref. [16], a novel design was prototyped for a coreless AFPM generator applied to small wind turbines where the machine power increased for the integrated winding coil. In Ref.…”

Section: Prototype Implementation Of Coreless Afpmmentioning

confidence: 99%

“…F I G U R E 4 Different prototype coreless machine implementation. (a) Rotor oriented design [14], (b) pole arc ratio implementation [15], (c) integrated coil design [16] (d) rotor thickness optimisation [17] (e) magnet shape variation [18] and (f) single stator double rotor machine [19] F I G U R E 5 Search criteria and protocol of the systematic literature review…”

Section: Screeningmentioning

confidence: 99%

“…The majority of the articles were published between 2017 and 2021, which is almost 55% of the selected publications. The highest number of publications (18) is recorded in 2020, while the second-highest number of papers (16) were published in 2019, and 2017 saw the third-highest 14 articles. As of 2021, already nine articles have been published within the first six months, and more articles are in press.…”

Section: Chronological Pattern Of Publicationsmentioning

confidence: 99%

“…The impact of magnet shape and circumferentially magnetised magnets buried inside the rotor surface on the coreless SSDR topology has been investigated [14,46]. For coreless SSDR AFPM machines in small scale portable applications, a discussion was made about design [16,[47][48][49][50][51][52][53][54][55][56], optimisation [28,50,57] and modelling [58,59]. In Ref.…”

Section: Single Stator Double Rotor (Ssdr)mentioning

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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“…In Ref. [16], a novel design was prototyped for a coreless AFPM generator applied to small wind turbines where the machine power increased for the integrated winding coil. In Ref.…”

Section: Prototype Implementation Of Coreless Afpmmentioning

confidence: 99%

Section: Screeningmentioning

confidence: 99%

Section: Chronological Pattern Of Publicationsmentioning

confidence: 99%

Section: Single Stator Double Rotor (Ssdr)mentioning

confidence: 99%

See 2 more Smart Citations

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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“…A multiobjective optimization design of a permanent magnet generator (PMG) based on the Taguchi method was proposed by Karimpour et al, 18 where with a high generator efficiency and electromotive force with low total harmonic distortion. In a different study, a comparison of printed circuit board (PCB) winding topologies for axial flux permanent magnet (AFPM) synchronous machines was examined by Tokgöz et al 19 A novel design of the three‐layer winding coil sets of a coreless axial flux permanent magnet generator (AFPMG) was implemented by Yao et al 20 In this 1‐MW direct drive AFPMG, the windings were designed and manufactured from a conductor sheet by applying the cutting and bending processes instead of the conventional stranded wires in Reference 21. In other paper, a new technique for the determination of the size of axial component flux density ( B ), which was used to determine the attracting forces between the rotor disks, was presented by Pranjic and Peter Virtic 22 .…”

Section: Introductionmentioning

confidence: 99%

Optimization of a 3‐kWaxial flux permanent magnet generator with variable air gap

Kurt

Gör

Çelik

2021

Int Trans Electr Energ Syst

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Summary An air gap optimization study of a 3‐kW axial flux three‐phase permanent magnet generator has been performed. The machine has two rotors sandwiching a stator with 12 separated laminated cores under an innovative flux morphology circulating over the back‐iron components. The rotor component has 16 rare earth magnets with an innovative self‐cooling blade structure. According to the air gap parametric magnetostatic analyses under the finite element method (FEM) between the range of 0.8 and 7 mm, the spatial magnetic flux distribution and cogging torque values have been determined. Besides, following the magnetostatic analyses, time‐dependent FEM simulations over the generated voltage and power values have been studied in detail. Then, after the implementation of the designed machine, the experiments have been performed for various air gap values. The generated power is observed to be dependent on the air gap, the efficiency is measured as 85%, and power density is measured as 111.7 kW/m3, which is a promising value compared to the literature. A scaling effect study is performed as functions of air gap and rotor speed for the first time to our knowledge. The maximum cogging torque is measured as 3.12 Nm. The other superiority of the present prototype is its low total harmonic distortion value within 2%; thereby, it generates nearly an ideal sinusoidal waveform. Consequently, the novel machine is recommended for both off‐grid and on‐grid operations with its low harmonic distortion and high efficiency.

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Design and control of a parallel-axis twin-rotor counter-rotating marine current turbine for the shallow sea conditions

Li,

Liu,

et al. 2024

Renewable Energy

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Novel design of a coreless axial‐flux permanent‐magnet generator with three‐layer winding coil for small wind turbines

Cited by 12 publications

References 18 publications

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

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

Optimization of a 3‐kWaxial flux permanent magnet generator with variable air gap

Design and control of a parallel-axis twin-rotor counter-rotating marine current turbine for the shallow sea conditions

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