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Analysis of Engine Propeller Matching of DC Motor as a Main Propulsion Eddy Setyo Koenhardono; Juniarko Prananda; Ekaprana Danian
International Journal of Marine Engineering Innovation and Research Vol 2, No 1 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.4 KB) | DOI: 10.12962/j25481479.v2i1.2702

Abstract

The development of ship always searches through the most benefits system for reducing costs of propulsion system without increase pollution. Diesel propulsion system or also known as conventional propulsion system is efficient but requires high operating costs and increase high level of marine pollution. Electrical propulsion system is using electric motors as the prime mover of the propeller. There are 2 types of electric motors that will be used for research of electric propulsion system, there are; DC motors and three-phases induction motor. As the use of DC motor as a prime mover for this electrical propulsion system, this study determines the characteristic between voltage terminal with torque and also field current with torque. It results that torque produced by the DC motor is in the same magnitude with the speed (RPM). The higher the speed have shaped the value of the torque. The input and terminal voltages adjusts all variables and results. In this study, different field voltage creates different pattern of motor envelope. Its manner to propeller curve occurs total different results. With field voltage of 50 V, the ranges of motor envelope immoveable in the point of 150% of present speed and 160%. While field voltage of 60 V serves larger ranges of motor envelope which possible to reach further than 50 V curve.
Economic Dispatch Analysis of Hybrid Power Plant System in Islands Area Based on Linear Programming Method Rusdianto Rusdianto; Eddy Setyo Koenhardono; Juniarko Prananda
International Journal of Marine Engineering Innovation and Research Vol 5, No 4 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.139 KB) | DOI: 10.12962/j25481479.v5i4.5646

Abstract

The increase in electricity demand in Selatpanjang, Meranti Island Regency, Riau continues to occur. However, the availability of diesel fuel types is increasingly scarce and the price is increasingly expensive. Therefore, another generator is needed, namely a relatively cheap coal-fired power plant and the availability of coal reserves in the Sumatran region. One of the problems in the economic operation of a generating system is economics dispatch, which is how to obtain minimum operating costs while meeting existing and reliable limits. For this reason, an economic dispatch analysis is needed for the optimal generating system by using the linear programming method. This economic dispatch analysis uses operational cost as a parameter and is done by using software assistance in the form of Matlab. Based on the results of loading with the same variation, the power generation based on economic dispatch calculations has an average load factor smaller than the average load factor based on unit commitment improvement calculations. Thus, the generation with economic dispatch has a higher specific fuel consumption (g/KWH) than the unit commitment improvement so that the fuel consumption price is issued higher.
Flat Top Barge 300 feet Using Portable Dynamic Positioning System Agoes Santoso; Juniarko Prananda; Amiadji Amiadji; Edi Jadmiko; Izzu Alfaris Murtadha
International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.518 KB) | DOI: 10.12962/j25481479.v1i2.1977

Abstract

Portable Dynamic Positioning System has not commonly applied to the ship, especially on barge. Besides for Dynamic Positioning function, the system can be used as ship's main propulsion. By using this system, the ship able to not using anchors because the functions can be performed by the Portable Dynamic System. Therefore, research about the application of Portable Dynamic Positioning System on the ship is conducted. This research aims to design a Flat Top Barge 300feet ship, to determine the specifications of Portable Dynamic Positioning System which is used, and to find out the ship stability which is designed on the empty payload condition and maximum payload. This research designed the ships with main dimensions LWL 90.1 meters, 25 meters wide, 5.5 meters high and 4.2 meters draught. To generate the ship with a maximum speed of 8 knots, it takes four thruster supplied with power 225 kW each, so that the total generated power is 1100 kW. This study analyzes three conditions of the ship stability, there are the condition of full payload, empty payload, and maximum payload. Each payload conditions will be analyzed regarding the large payload and draught water produced. The first is full payload conditions resulting payload in the amount of 5650 ton with a draught on the LCF at 4,181 meters. The second is the large empty payload condition displacement is 2809 ton and water draught on the LCF at 1,591. And the last is maximum payload conditions, resulting payload in the amount of 7450 ton with a draught on the LCF at 4,994 meters.
Study Of Calculation Of Degaussing System For Reducing Magnetic Field From Submersible Vehicle Sardono Sarwito; Juniarko Prananda; Eddy Setyo Koenhardono; Anggela Wahyu Kurniawan
International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.82 KB) | DOI: 10.12962/j25481479.v1i2.1979

Abstract

The rapid development of maritime technology in the world to make Indonesia are also increasingly taking the development of maritime technology, such as in a Submersible Vehicle one is degaussing system, this technology should be owned by the vessel so that the vessel can avoid dangerous explosive equipment contained in the sea. Degaussing system is a system that is in use on the metal parts or electronic devices that are at risk of a magnetic field. This system is used to prevent the vessel from dangerous equipment in the sea which can trigger an explosion and the damage that utilize magnetic fields as a metal-detection sensor when the boat was doing dives. To the authors will plan the design degaussing system, and calculating the system in order to reduce the magnetic properties of the Submersible Vehicle which were obtained by the use of Coil Degaussing along 214,5 meters, a diameter of 0,2, with 500.000 coil that will generate a current of 0,0157 Ampere's 0.0787 Tesla generates a magnetic field.
Performance Analysis of Screw Turbine Design with Additional Flaps Modification Using Computational Fluid Dynamics Method Juniarko Prananda; Eddy Setyo Koenhardono; Noerendik Fuathur Farhan
International Journal of Marine Engineering Innovation and Research Vol 6, No 4 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.115 KB) | DOI: 10.12962/j25481479.v6i4.10623

Abstract

Renewable energy is a type of alternative energy that can be utilized to generate electricity. Wind energy is one of the renewable energy sources. Because of Indonesia's equatorial location, the wind characteristics are moderate, with wind direction and speed changing frequently. To harvest wind energy, it is therefore vital to diversify the types of wind turbines. A screw turbine, also known as an Archimedes screw turbine or a screw turbine, is a type of wind turbine that is often employed in micro hydropower plants. The great efficiency of this turbine is a benefit. This screw turbine will use a Horizontal Axis Wind Turbine (HAWT). The advantage of using the horizontal axis over the vertical axis is that the rotor's efficiency is higher. The screw turbine was changed in this study by adding flaps to boost torque and rpm performance while also increasing wind catchment. The model design with the inclusion of 3 cm flaps with a flap angle of 30° has a high torque and angular velocity with a torque value of 0.00609 Nm and an angular velocity of 12.55 rad/s at an airflow velocity of 3.4 m/s, according to the results obtained from model simulation using CFD (119,84 RPM). Power Coefficient (CP) = 0.00659, Torque Coefficient (CQ) = 0.01990, and Tip Speed Ratio (TSR) = 0.331357.
Design of Sea Level Monitoring System Using Accelerometer with IoT Based Juniarko Prananda; Agoes A. Masroeri; Vincentia Nindya Ayukinanthi
International Journal of Marine Engineering Innovation and Research Vol 6, No 3 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.582 KB) | DOI: 10.12962/j25481479.v6i3.8820

Abstract

Sea level is always changing, either influenced by meteorological aspects, gravitational forces, or geological effects. Monitoring the sea level is very beneficial, especially in such a big archipelago as Indonesia. This monitoring system is designed to use accelerometer sensor to sense the sea level changes vertically to obtain the level changes over time. This device is also featured by internet connection so that the data obtained from the sensor could be process on site using Arduino microcontroller and then sent to online website for remote monitoring process. This research is using experimental method, focusing on the electronic system design. The working flow of the research is started with literature studies and problem statement, then followed by system design, continued to software design, server building, and software and hardware integration. The last step is to test the device and analyze the result. After trial using simple pulley system, it is found that this device is able to sense the vertical level changes well, with an error for the sensor itself is at most 6 cm or about 2%. But there are some connection problems occurred between the device and the internet which resulted in a delay on the process, making the online monitoring system not perform as desired.
SISTEM PENDUKUNG PENGAMBILAN KEPUTUSAN PEMBELIAN MOBIL BARU DENGAN METODE LOGIKA FUZZY Juniarko Prananda
e-NARODROID Vol 2 No 1 (2016)
Publisher : Universitas Narotama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31090/narodroid.v2i1.98

Abstract

Mobil adalah salah satu alat transportasi darat yang penting pada saat sekarang ini. Memiliki mobil bagi sebagian besar kalangan masyarakat pada saat ini bagaikan suatu hal yang pokok dimana dapat membantu mereka dalam beraktivitas khususnya dalam bekerja. Beragamnya kriteria tersebut, tentunya akan mempersulit konsumen dalam menentukan pilihan yang tepat, sesuai dengan kriteria yang diinginkannya. Oleh karena itu dibutuhkan suatu sistem pengambilan keputusan yang didukung dengan metode logika fuzzy agar mempermudah pengambilan keputusan dalam pembelian mobil kepada calon pembeli. Pada sistem ini variabel masukannya berupa kapasitas penumpang, ukuran mesin, dan harga yang diberikan sesuai dengan keinginan calon pembeli sehingga sistem ini secara otomatis akan melakukan pemilihan hasil dari jenis dan kelas mobil apa yang sesuai berdasarkan nilai masukan yang telah diberikan. Kata kunci : Pengambilan Keputusan, Mobil, Logika Fuzzy