Analisis Penggunaan Konverter AC-AC Untuk Optimalisasi Konsumsi Bahan Bakar Pada Auxiliary Engine Kapal Ferry Ro-Ro Kmp. Tuna 600 GRT

Arieq, Muhammad Dava Yahfal (2025) Analisis Penggunaan Konverter AC-AC Untuk Optimalisasi Konsumsi Bahan Bakar Pada Auxiliary Engine Kapal Ferry Ro-Ro Kmp. Tuna 600 GRT. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingginya konsumsi bahan bakar pada Auxiliary Engine (AE) kapal Ferry Ro-Ro menjadi salah satu tantangan utama dalam efisiensi operasional kapal. Hal ini disebabkan oleh keharusan menjaga frekuensi listrik pada rentang 50/60 Hz, yang mengharuskan AE beroperasi pada putaran maksimum (RPM tinggi), baik saat beban tinggi maupun rendah, sehingga meningkatkan konsumsi bahan bakar. Penelitian ini bertujuan untuk merancang dan menganalisis sistem kelistrikan dengan penerapan teknologi converter AC-AC sebagai solusi pengaturan frekuensi konstan di sisi beban dengan penyesuaian RPM pada engine. Kajian dilakukan melalui studi literatur, perancangan one-line diagram, dan simulasi sistem menggunakan perangkat lunak. Karena software analisa kelistrikan yang digunakan belum mendukung pemodelan langsung converter AC-AC, maka digunakan pendekatan alternatif berupa konfigurasi rectifier dan inverter dalam satu rangkaian. Simulasi dilakukan pada tiga kondisi operasi kapal, yaitu sailing, maneuvering, dan at port. Hasil menunjukkan bahwa penerapan converter AC-AC mampu menjaga tegangan tetap dalam batas toleransi BKI (maksimal 6%), meningkatkan power factor sistem hingga rata-rata 0,8, dan memperbaiki efisiensi distribusi daya. Dari sisi efisiensi bahan bakar, konsumsi sistem eksisting tercatat sebesar 33,3485 liter/trip, sedangkan pada opsi konverter 1 menurun menjadi 32,5946 liter/trip (efisiensi 2,26%) dan pada opsi konverter 2 menjadi 32,6172 liter/trip (efisiensi 2,19%). Meskipun opsi konverter 1 lebih unggul dalam penghematan bahan bakar, nilai Benefit-Cost Ratio (BCR) tertinggi sebesar 1,56 justru diperoleh pada opsi konverter 2, yang menunjukkan kelayakan ekonominya secara lebih optimal.
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The high fuel consumption of Auxiliary Engines (AE) on Ro-Ro ferries is one of the main challenges in achieving operational efficiency. This issue arises from the requirement to maintain electrical frequency within the 50/60 Hz range, forcing the AE to operate at maximum revolutions per minute (RPM) regardless of load conditions—whether high or low—thus increasing fuel usage. This study aims to design and analyze the electrical system through the implementation of AC-AC converter technology as a solution for maintaining constant frequency on the load side while allowing RPM adjustment on the engine side. The research was conducted through literature review, one-line diagram design, and system simulation using specialized software. Since the electrical analysis software used does not support direct modeling of an AC-AC converter, an alternative configuration combining a rectifier and an inverter in a single circuit was applied. Simulations were carried out for three ship operating conditions: sailing, maneuvering, and at port. The results indicate that the application of an AC-AC converter can maintain voltage within BKI's tolerance limits (maximum 6%), improve the system's power factor to an average of 0.8, and enhance power distribution efficiency. In terms of fuel efficiency, the existing system recorded a consumption of 33.3485 liters/trip, while converter option 1 reduced it to 32.5946 liters/trip (a 2.26% improvement) and converter option 2 to 32.6172 liters/trip (a 2.19% improvement). Although converter option 1 showed better fuel savings, the highest Benefit-Cost Ratio (BCR) of 1.56 was achieved with converter option 2, indicating greater economic feasibility.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Analisis Ekonomi, Efisiensi Energi, Kelistrikan Kapal, Power Factor, Voltage Drop, Economic Analysis, Energy Efficiency, Power Factor, Ship Electrical System, Voltage Drop.
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2692 Inverters
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Arieq M. Dava Yahfal
Date Deposited:	04 Aug 2025 02:17
Last Modified:	08 Sep 2025 02:54
URI:	http://repository.its.ac.id/id/eprint/125151

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