Perancangan Sistem Transmisi Planetary Gear Untuk Permanent Magnet Generator (PMG) Pada Aplikasi Nozzle Diffuser Marine Turbine

Saputra, Aditya Raiya Dusty (2026) Perancangan Sistem Transmisi Planetary Gear Untuk Permanent Magnet Generator (PMG) Pada Aplikasi Nozzle Diffuser Marine Turbine. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanfaatan energi arus laut merupakan salah satu alternatif untuk mengurangi ketergantungan kapal nelayan tradisional terhadap bahan bakar fosil. Sistem planetary gear dirancang menggunakan konfigurasi tiga planet gear dengan jumlah gigi sun gear 24, planet gear 24, dan ring gear 72, module 2 mm, serta diameter 200 mm. Komponen transmisi difabrikasi menggunakan material poliamida melalui proses 3D machining. Pengujian dilakukan dengan mensimulasikan kondisi operasional pada kapal, di mana motor DC digunakan sebagai sumber putaran untuk menggerakkan sistem transmisi sebagai representasi putaran turbin. Pengujian dilakukan dalam tiga konfigurasi, yaitu tanpa PMG, dengan PMG tanpa beban baterai, dan dengan PMG yang dihubungkan pada beban baterai. Hasil pengujian menunjukkan bahwa sistem menghasilkan rasio transmisi rata - rata sebesar 3,958 – 4,058, yang mendekati rasio perancangan sebesar 4:1, sehingga mampu berfungsi secara efektif sebagai speed increaser. Karakteristik torsi menunjukkan hubungan berbanding terbalik terhadap kecepatan putar, sedangkan penambahan beban baterai meningkatkan kebutuhan torsi akibat munculnya electromagnetic torque pada PMG. Pada kondisi pengisian baterai, tegangan keluaran PMG relatif stabil pada rentang 11,77 – 11,81 V, sementara arus meningkat dari 0,11 A menjadi 0,51 A sehingga daya listrik yang dihasilkan meningkat dari 1,34 W menjadi 6,05 W. Efisiensi mekanik sistem transmisi rantai yang menghubungkan planetary gear dengan PMG berada pada kisaran 95,47% – 97,42%, dengan nilai rata-rata sebesar 96,33%, yang menunjukkan bahwa rugi - rugi mekanis pada sistem relatif kecil. Sistem transmisi planetary gear yang dirancang terbukti mampu meningkatkan kecepatan putar PMG secara efektif pada aplikasi nozzle - diffuser marine turbine.
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The utilization of ocean current energy is a promising alternative to reduce the dependence of traditional fishing vessels on fossil fuels. The planetary gear transmission system was designed using a three-planet gear configuration with 24 teeth on the sun gear, 24 teeth on each planet gear, and 72 teeth on the ring gear, a module of 2 mm, and a diameter of 200 mm. The transmission components were fabricated from polyamide using a 3D machining process. Experimental testing was conducted by simulating the operating conditions of a fishing vessel, in which a DC motor was used as the driving source to rotate the transmission system, representing the rotational speed of the marine turbine. The experiments were performed under three configurations: without a permanent magnet generator (PMG), with a PMG under no battery load, and with a PMG connected to a battery load. The results showed that the transmission system achieved an average transmission ratio ranging from 3.958 to 4.058, which closely matched the design ratio of 4:1, demonstrating its effectiveness as a speed increaser. The torque characteristics exhibited an inverse relationship with rotational speed, while the addition of a battery load increased the required torque due to the electromagnetic torque generated by the PMG. During battery charging, the PMG output voltage remained relatively stable within the range of 11.77 – 11.81 V, while the output current increased from 0.11 A to 0.51 A, resulting in an increase in electrical power output from 1.34 W to 6.05 W. The mechanical efficiency of the chain transmission connecting the planetary gear to the PMG ranged from 95.47% - 97.42%, with an average efficiency of 96.33%, indicating relatively low mechanical losses. The proposed planetary gear transmission system was proven to effectively increase the rotational speed of the PMG in a nozzle - diffuser marine turbine application.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Daya Listrik, Motor DC, Permanent Magnet Generator, Planetary Gear, Rasio, Electrical Power, DC Motor, Permanent Magnet Generator, Planetary Gear, Ratio
Subjects:	V Naval Science > VM431 Fishing boats
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Aditya Raiya Dusty Saputra
Date Deposited:	03 Aug 2026 05:21
Last Modified:	03 Aug 2026 05:21
URI:	http://repository.its.ac.id/id/eprint/142065

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