Yusuf Ismail Nakhoda, Choirul Saleh


This axial flux permanent magnet generator was designed in low speed multi-disc using two stator discs and three rotor discs, wherein each rotor disc contained ten poles of Neodynium type permanent magnet and each stator had ten coils, in order to be able to produce 600 rpm generator rotation. The voltage prepared in each stator phase output would later be connected in series or parallel circuit for testing. This generator was tested with variations of air gap between different rotors and stators. There were four variations of air gap which were 2 mm, 3 mm, 4 mm, and 5 mm and each of them were connected to stator circuit in series. The test results with an air gap of 2 mm generated voltage of 59 Volt AC, an air gap of 3 mm generated a voltage of 53.7 Volt AC, an air gap of 4 mm generated a voltage of 49.6 Volt AC, an air gap of 5 mm generated a voltage of 48.5 Volt AC. Based on the test results, it can be concluded that the gap of the air gap was inversely proportional to the output voltage, the greater the value of the air gap that was applied, the smaller the voltage generator output was generated.


permanent magnet generator, axial flux, multi-disc, low rotation, air gap

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B. A. Nasir, “Design considerations of micro-hydro-electric power plant,” Energy Procedia, vol. 50, pp. 19–29, 2014.

Y. R. Pasalli and A. B. Rehiara, “Design Planning of Micro-hydro Power Plant in Hink River,” Procedia Environ. Sci., vol. 20, pp. 55–63, 2014.

V. Goudar, Z. Ren, P. Brochu, M. Potkonjak, and Q. Pei, “Optimizing the output of a human-powered energy harvesting system with miniaturization and integrated control,” IEEE Sens. J., vol. 14, no. 7, pp. 2084–2091, 2014.

A. Khaledian and M. Aliakbar Golkar, “Analysis of droop control method in an autonomous microgrid,” J. Appl. Res. Technol., vol. 15, no. 4, pp. 371–377, 2017.

P. A. Michael and C. P. Jawahar, “Design of 15 kW Micro Hydro Power Plant for Rural Electrification at Valara,” Energy Procedia, vol. 117, pp. 163–171, 2017.

D. Zappalá, N. Sarma, S. Djurović, C. J. Crabtree, A. Mohammad, and P. J. Tavner, “Electrical & mechanical diagnostic indicators of wind turbine induction generator rotor faults,” Renew. Energy, vol. 131, pp. 14–24, 2019.

E. Cetin and F. Daldaban, “Analyzing distinctive rotor poles of the axial flux PM motors by using 3D-FEA in view of the magnetic equivalent circuit,” Eng. Sci. Technol. an Int. J., vol. 20, no. 5, pp. 1421–1429, 2017.

M. R. Minaz and M. Çelebi, “Design and analysis of a new axial flux coreless PMSG with three rotors and double stators,” Results Phys., vol. 7, pp. 183–188, 2017.

S. A. Shufat, E. Kurt, C. Cinar, F. Aksoy, A. Hançerlioğulları, and H. Solmaz, “Exploration of a Stirling engine and generator combination for air and helium media,” Appl. Therm. Eng., vol. 150, no. January, pp. 738–749, 2019.

D. P. Arnold, “Review of microscale magnetic power generation,” IEEE Trans. Magn., vol. 43, no. 11, pp. 3940–3951, 2007.

H. Jaber, M. Khaled, T. Lemenand, and M. Ramadan, “Effect of generator load on hybrid heat recovery system,” Case Stud. Therm. Eng., vol. 13, no. November 2018, p. 100359, 2019.

M. Niroomand and H. R. Foroughi, “A rotary electromagnetic microgenerator for energy harvesting from human motions,” J. Appl. Res. Technol., vol. 14, no. 4, pp. 259–267, 2016.

A. N. Singh, W. Doorsamy, and W. Cronje, “Thermographical analysis of turbo-generator rotor,” Electr. Power Syst. Res., vol. 163, no. June, pp. 252–260, 2018.

E. B. Kengne Signe, O. Hamandjoda, and J. Nganhou, “Methodology of Feasibility Studies of Micro-Hydro power plants in Cameroon: Case of the Micro-hydro of KEMKEN,” Energy Procedia, vol, 2017.. 119, pp. 17–28

Abdul Multi, Iwa Garniwa, and Uno Bintang Sudibyo, ”Determining the Air Gap Length. of an Axial Flux Wound Rotor Synchronous Generator”, Makara Seri Teknologi, 2013, 17(2): 87-93



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