Optimal cogging torque reduction design of dual stator radial flux permanent magnet generator

Lee, Gyeong-Chan; Jung, Tae-Uk

doi:10.1109/epe.2013.6634427

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…Pengamatan nilai torsi denyut ditentukan oleh jumlah peristiwa torsi denyut (NTD) dan sudut mekanik putaran mesin (αM) [14]. Persamaan (1) menunjukkan bahwa NTD berbanding lurus dengan jumlah kutub magnet rotor (NP) dan jumlah slot stator (NS), tetapi berbanding terbalik dengan faktor persekutuan tersebesar dari NP dan NS.…”

Section: A Pemodelanunclassified

“…Metode desain ini dimaksudkan untuk mengurangi energi pada celah udara (WA) yang disebabkan adanya pengaruh interaksi magnetik antara stator dan rotor pada generator [14], seperti ditunjukkan pada persamaan (3). WA dipengaruhi oleh stack length stator (LS), radius magnet permanen rotor (R1), radius stator (R2), permeabilitas udara (µ0), permeansi relatif celah udara (G), kelipatan persekutuan terkecil dari NS dan NP (NK), dan kerapatan fluks magnetik (B).…”

Section: B Desain Pemasangan Lebar Gigi-gigi Statorunclassified

“…(3) (4) Persamaan (4) merupakan fungsi permeansi relatif pada celah udara (GnNK) [14]. Berdasarkan persamaan (5) dengan nilai "x" dan "y" yang ditunjukkan pada Tabel 3, nilai permeansi relatif pada celah udara (GnNK) akan sama dengan 0 ketika n bernilai genap dan mendekati akan nol ketika bernilai positif.…”

Section: B Desain Pemasangan Lebar Gigi-gigi Statorunclassified

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Studi Desain Generator Magnet Permanen Fluks Radial pada Pembangkit Listrik Tenaga Angin Kecepatan Putaran Rendah

Pramurti¹

2020

CYCLOTRON

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Abstrak—Generator magnet permanen fluks radial adalah mesin yang efektif untuk diaplikasikan pada sistem pembangkit listrik tenaga angin kecepatan rendah. Rugi magnetik akibat celah udara atau torsi denyut adalah salah satu masalah yang dapat menyebabkan penurunan performa tegangan keluaran dan daya keluaran pada generator jenis ini. Pada penelitian ini, topologi yang digunakan adalah stator ganda generator magnet permanen fluks radial. Topologi tersebut diharapkan mampu meningkatkan fluks listrik yang dihasilkan oleh kumparan-kumparan stator. Tujuan penelitian ini adalah untuk meningkatkan tegangan keluaran dan daya keluaran generator menggunakan metode desain pemasangan lebar gigi-gigi stator. Ada 3 variabel pada metode desain ini. Ketiga variabel desain mampu menurunkan nilai torsi denyut. Namun, ketiganya menyebabkan ketidakstabilan putaran generator. Hal ini disebabkan oleh peningkatan distribusi frekuensi torsi denyut. Ketiga variabel mampu meningkatkan tegangan keluaran generator dan daya keluaran generator masing-masing mencapai 3.94% dan 3.3%. Peningkatan tegangan keluaran dan daya keluaran generator tidak terlalu signifikan disebabkan oleh peningkatan distribusi frekuensi torsi denyut yang mencapai 162%.Kata kunci: daya keluaran, generator magnet permanen fluks radial, pemasangan lebar gigi-gigi stator, stator ganda, dan tegangan keluaran.Abstract— Radial flux permanent magnet generators are effective for application to low speed wind power generation systems. Magnetic loss due to air gap or called cogging torque is one of the problems that can cause a decrease in the output voltage and output power performance of this type of generator. In this study, the topology used is a dual stator radial flux permanent magnet generator. The topology is expected to increase the electrical flux produced by the stator coils. The purpose of this study is to increase the output voltage and output power of the generator using the stator teeth pairing design method. There are 3 variables in this design method. The three variables have been able to decrease the value of cogging torque. However, the three design variables have made the generator more unstable. This is due to an increase in the cogging torque frequency distribution. The three variables have been able to increase the generator output voltage and the generator output power respectively reached 3.94% and 3.3%. The increase in output voltage and output power of the generator is not too significant due to an increase in the cogging torque frequency distribution which reached 162%, karena itu tuliskan temuan atau kontribusi utama dari naskah sebaik mungkin dengan singkat. Keywords: cogging torque, dual stator, radial flux permanent magnet generator, output power, and output voltage

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Section: A Pemodelanunclassified

Section: B Desain Pemasangan Lebar Gigi-gigi Statorunclassified

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Studi Desain Generator Magnet Permanen Fluks Radial pada Pembangkit Listrik Tenaga Angin Kecepatan Putaran Rendah

Pramurti¹

2020

CYCLOTRON

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“…Previously, several methods have been proposed and analyzed for reduce the effect of cogging torque [ 16 , 17 , 18 , 19 , 20 , 21 ]. Some studies have suggested an optimal design of axial flux machines to diminish the effect of cogging torque [ 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Cogging Torque Reduction in Axial Flux Machines

et al. 2021

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An axial flux permanent magnet single-rotor generator has good potential in various applications that require high efficiency, prolonged service life, as well as low mass and dimensions. However, the effect of cogging torque diminishes generator efficiency and flexibility of functionality. The effect of cogging torque arises because of a small air gap between the stator teeth and the rotor. In this article, we suggest that shifting the opposite teeth of the stator to the optimal angle can reduce the effect of cogging torque. A special axial flux permanent magnet generator is developed to choose the optimal disposition of the permanent magnet and stator teeth in the frame. The impact of the optimal angle on the cogging torque, output power, and generator efficiency is investigated. This analytical study with experimental testing proves that the optimal angle between opposite teeth can significantly decrease cogging torque and improve output power and efficiency. The results show that cogging torque decreases significantly (4–5 times) at an optimal angle of 7.5° as compared with that of other angles, although magnetic flux and output power decline slightly but efficiency increases.

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“…The AFPM machine is generally the more suitable choice for high frequency or low speed operations because of its larger outer diameter than that of the RFPM machine [1][2][3]. However, there still remains the problem of the cogging torque, and many researches have been conducted in order to find ways to decrease it [4][5][6]. In this study, we present the influence of the shapes and arrangements of the stator core pole on cogging torque of a double-sided AFPM generator.…”

Section: Introductionmentioning

confidence: 99%

The influence of stator pole shape and its arrangements on cogging torque for double-sided AFPM generator

Kim

Jang

Joo

2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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In this paper, the cogging torques were calculated for 1kw double-sided axial flux permanent magnet (AFPM) generator with different stator core pole arrangements. The generator is composed of 18 stator pole and 24 rotating field magnets on each side. The cogging torques of the generator with three types of arrangements of stator poles were calculated using 3D finite element method and the optimum core shape was determined to minimize the cogging torque.

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Optimal cogging torque reduction design of dual stator radial flux permanent magnet generator

Cited by 4 publications

References 13 publications

Studi Desain Generator Magnet Permanen Fluks Radial pada Pembangkit Listrik Tenaga Angin Kecepatan Putaran Rendah

Studi Desain Generator Magnet Permanen Fluks Radial pada Pembangkit Listrik Tenaga Angin Kecepatan Putaran Rendah

The Effects of Cogging Torque Reduction in Axial Flux Machines

The influence of stator pole shape and its arrangements on cogging torque for double-sided AFPM generator

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