scholarly journals Analisis Perencanaan Jarak Celah Udara Pada Generator Axial

Author(s):  
Syafriyudin Syafriyudin ◽  
M Suyanto

The generator uses a permanent magnet so it does not require initial excitation to generate a voltage. The generator design is axial flux type, uses ceramic type permanent magnet (NdFeB), uses two flanking stator rotors. For electricity use, the AC voltage is changed to DC voltage using a rectifier for charging the accumulator. The air gap in the axial generator is the distance between the rotor and the stator. The air gap is also a place for the transfer of the magnetic field through the coil on the stator to produce a magnetic flux value that affects the induced voltage in the coil. The faster the rotation, the greater the voltage generated. This axial generator that has been designed can produce a frequency of ± 50 Hz, an effective voltage of ± 22 V when the air gap is 2 mm, the frequency measurement has an error of 10-20 Hz and an error percentage of 5-10%, with the results of measuring the induced current that has a large the same voltage.

2020 ◽  
Vol 2 (2) ◽  
pp. 32-36
Author(s):  
Bangun Giri Pamungkas ◽  
Suyitno ◽  
Daryanto ◽  
Perdamean Sebayang

The purpose of this research is to know the influence of NdFeB permanent magnet dimensions and the distance of air gap on performance of single phase axial flux permanent magnet generator. In this research using quantitative approach with experimental method. Research subjects used, namely permanent magnetic generator axial flux with two rotor samples that have different magnetic dimensions and conducted air gap variation. The research data was collected by testing without load and testing with electrical load, to know the performance values of the generator in the form of induction voltage and electric power. The results showed that the induction voltage and electric power were affected by the magnetic dimensions and the distance of the air gap. These results indicate that the rotor with a magnetic surface area of 0.0058 m2 and 0.0034 m2 produces an induced voltage of 91.7 and 27.1 V, as well as a power of 14 and 2.8 W. Whereas, for variations in the air gap with the rotor magnetic surface area 0.0058 m2 and varied 2; 3; 4; 5; and 6 mm produces an induced voltage of 91.7; 89.0; 86.5; 80.2; and 68.5 V, and power of 14; 12; 10.9; 10.5; and 8.8 W. Thus, the use of a magnet ic dimension that is larger and in accordance with the size of the coil, as well as the use of a small air gap distance will result in a better induction voltage value.   Abstrak Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dimensi magnet permanen NdFeB dan jarak celah udara terhadap kinerja generator magnet permanen fluks aksial satu fasa. Pada penelitian ini menggunakan pendekatan kuantitatif dengan metode eksperimen. Subjek penelitian yang digunakan, yaitu generator magnet permanen fluks aksial dengan dua sampel rotor yang memiliki dimensi magnet berbeda dan dilakukan variasi celah udara. Pengumpulan data penelitian dilakukan dengan pengujian tanpa beban dan pengujian dengan beban listrik, untuk mengetahui nilai-nilai kinerja generator berupa tegangan induksi dan daya listriknya. Hasil penelitian menunjukkan bahwa tegangan induksi dan daya listrik dipengaruh oleh dimensi magnet dan jarak celah udara. Hasil tersebut menunjukkan bahwa pada rotor dengan luas permukaan magnet 0,0058 m2 dan 0,0034 m2 menghasilkan tegangan induksi sebesar 91,7 dan 27,1 V, serta daya sebesar 14 dan 2,8 W. Sedangkan, pada variasi celah udara dengan rotor luas permukaan magnet 0,0058 m2 dan divariasi 2; 3; 4; 5; dan 6 mm menghasilkan tegangan induksi sebesar 91.7; 89.0; 86.5; 80.2; dan 68.5 V, serta daya sebe sar 14; 12; 10,9; 10,5; dan 8,8 W. Maka, penggunaan dimensi magnet yang lebih besar dan sesuai dengan ukuran kumparan, serta penggunaan jarak celah udara yang kecil akan menghasilkan nilai tegangan induksi yang lebih baik.


1970 ◽  
Vol 110 (4) ◽  
pp. 25-29 ◽  
Author(s):  
C. Akuner ◽  
E. Huner

In this study, the axial flux permanent magnet motor and the length range of the air gap between rotors was analyzed and the appropriate length obtained. NdFeB permanent magnets were used in this study. Permanent magnets can change the characteristics of the motor's torque. However, the distance between permanent magnets and the air gap will remain constant for each magnet. The impact of different magnet angles for the axial flux permanent magnet motor and other motor parameters was examined. To this aim, the different angles and torque values of the magnetic flux density were calculated using the finite element method of analysis with the help of Maxwell 3D software. Maximum torque was obtained with magnet angles of 21°, 26°, 31.4°, and 34.4°. Additionally, an important parameter for the axial flux permanent magnet motor in terms of the air gap flux was analyzed. Minimum flux change was obtained with a magnet angle of 26°. The magnetic flux of the magnet-to-air-gap is under 0.5 tesla. Given the height of the coil, the magnet-to-air-gap distance most suitable for the axial flux permanent magnet motor was 4 mm. Ill. 11, bibl. 4, tabl. 2 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.280


2020 ◽  
Vol 2 (2) ◽  
pp. 28-31
Author(s):  
Agus Nur Hidayat ◽  
Suyitno ◽  
Daryanto

The purpose of this research is to know to know the influence of stator coil shape to performance (induced voltage and output power) of single phase axial flux permanent magnet generator. The method used is an experimental method. The population in this study is a unit of single phase axial flux permanent magnet generator. The sample in this study is the stator coil. Experiments were carried out by testing the performance of a single-phase axial flux permanent magnet generator in each variation the number of coil windings which had the 90 turns, 120 turns, and 350 turns. Experiments were carried out with no -load testing and with a resitive load that used 30 Watt incandescent lamps. The conclusion of this study shows that there is an influence from the number of coil windings on the performance (induced voltage and output power) of the generator. From three variations of the stator coil that used as sample, the highest performance is shown by the single phase axial flux permanent magnet generator which used the highest number of coil stator turns. The more number of turns, the better the performance of a single-phase axial flux permanent magnet generator. Abstrak Tujuan dari penelitian ini adalah untuk mengetahui pengaruh jumlah lilitan kumparan stator terhadap kinerja generator fluks aksial satu fasa yang berupa tegangan induksi dan daya listrik yang dihasilkan. Metode yang digunakan adalah metode eksperimen. Populasi pada penelitian ini ialah satu unit generator magnet permanen fluks aksial satu fasa. Sampel pada penelitian ini ialah kumparan stator. Eksperimen dilakukan dengan menguji kinerja generator magnet permanen fluks aksial satu fasa pada setiap variasi jumlah lilitan kumparan stator 90 lilitan, 120 lilitan, dan 350 lilitan. Ekperimen dilakukan dengan pengujian tanpa beban dan dengan beban resitif berupa lampu pijar 30 Watt. Kesimpulan pada penelitian ini menunjukkan bahwa adanya pengaruh jumlah lilitan kumparan stator terhadap kinerja generator yang berupa tegangan induksi dan daya listrik keluaran. Dari ketiga variasi sampel kumparan stator, kinerja tertinggi ditunjukkan oleh generator magnet permanen fluks aksial satu fasa yang menggunakan jumlah lilitan kumparan stator terbanyak. Semakin banyak jumlah lilitan, semakin baik kinerja generator magnet permanen fluks aksial satu fasa.


2017 ◽  
Author(s):  
Muhammad Kasim ◽  
Pudji Irasari ◽  
M. Fathul Hikmawan ◽  
Puji Widiyanto ◽  
Ketut Wirtayasa

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Ahmad Maulana

Abstrak:Dalam penelitian ini telah dianalisis efek air gap terhadap performa generator listrik tipe fluks aksial berbasismagnet permanen NdFeB. Analisis performa dilakukan dengan mengukur output tegangan generator listrik fluks aksialterhadap ukuran air gap dan kecepatan putar rotor. Air gap antara stator dan rotor divariasikan dari 7 sampai 20 mm. Darihasil eksperimen, peningkatan remanansi magnet berbanding lurus terhadap peningkatan output tegangan. Sebaliknya,peningkatan ukuran air gap menurunkan tegangan output secara linier. Hal ini disebabkan oleh adanya penurunan magnetikflux density secara exponensial. Pada ukuran air gap 7 mm dan kecepatan rotor 1500 rpm, dihasilkan output teganganmaksimal untuk Br = 0,2 dan 1,3 Tesla berturut-turut sebesar 10,4 dan 67,7 volt.Kata Kunci: air gap, generator listrik fluks aksial, ouput tegangan, magnet NdFeBAbstract:In this paper, the effect of air gap to the performance of NdFeB based permanent magnet axial flux electricalgenerator have been analyzed. The performance analysis was performed by measuring the ouput potential of generator asthe changing of air gap and rotational speed of rotor. The air gap was varied from 7 to 20 mm. Based on the experiment, theincreasing of magnetic remanence of permanent magnets was linearly corelated to the increasing of output voltage. On theother hand, increasing of the air gap was linearly reduced the ouput voltage. This effect is caused by the decreasing ofmagnetic flux densityexponentially. On the fixed air gap of 7 mm androtational speed of 1500 rpm, the maximum ouputvoltage is achived for Br = 0.2 and 1.3 Tesla  with the value of 10.4 and 67.7 volt, respectively.Keywords: air gap, axial flux electrical generator, ouput voltage, NdFeB magnets


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