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All Journal Jurnal Teknik ITS International Journal of Marine Engineering Innovation and Research

Indra Ranu Kusuma

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Author-ID : 2776155

Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Kajian Teknis Fenomena Getaran Vorteks pada Variasi Jumlah Oscillating Part Pembangkit Listrik Tenaga Arus Air Laut Bayu Dwi Atmoko; Indra Ranu Kusuma; Agoes Achmad Masroeri
Jurnal Teknik ITS Vol 1, No 1 (2012)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

– Penelitian ini mengkaji secara teknis fenomena getaran vorteks yang ada di laut dengan menggunakan computational fluid dynamic dan perhitungan manual untuk mengetahui karakteristik fluida saat melalui oscillating part pada pembangkit listrik bertenaga arus air laut, terdapat empat model oscillating part dengan jumlah yang berbeda dan variasi kecepatan awal yang berbeda. Parameter lingkungan pada simulasi disesuaikan dengan karakteristik perairan yang menjadi acuan , yakni perairan Karimata. Hasil simulasi model berupa gaya lift dan kecepatan eksitasi yang selanjutnya dihitung dengan persamaan matematis menghasilkan nilai respon dinamis total (amplitudo) yang selanjutnya ditampilkan dalam bentuk grafik amplitudo pada setiap model dan dari setiap model dipilih model dengan nilai amplitudo paling mendekati 0.5 m. Grafik tersebut diperoleh berdasarkan nilai amplitudo dari 1 hingga 120 detik. Selanjutnya model yang masuk kualifikasi direkomendasikan sebagai oscillating part yang sesuai untuk pembangkit listrik tenaga arus air laut. Dalam hal ini adalah model I yang berjumlah 2 silinder dengan nilai amplitudo maksimum kisaran 0.09 – 0.1 m dan jarak antar silinder sebesar 0.5 m. Selain itu , dalam jurnal ini dijelaskan mengenai fenomena getaran vorteks yang terjadi pada setiap variasi jumlah oscillating part. Sesuai dengan variasi konfigurasi dan kecepatan pada saat percobaan melalui permodelan maka diperoleh berbagai macam karakteristik fenomena getaran vorteks beserta anomalia yang terjadi pada aliran fluida setiap model .

Designing Passive Harmonic Filter on Dynamic Positioning Vessel's Electrical System Affected using Electrical Thruster Sardono Sarwito; Indra Ranu Kusuma; Yose Gregory Tarigan
International Journal of Marine Engineering Innovation and Research Vol 4, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Ship with a dynamic positioning system has the ability to maintain her position dynamically. To be able to maintain the position, generally, ship with a dynamic positioning system have several thrusters located at bow or stern of the ship. Based on the propulsion system, there are 2 types of thruster which are mechanical thruster and electrical thruster. In electrical type, the thruster is driven by an electric motor supplied from the generator. In addition, on dynamic positioning vessel equipped with the electrical thruster, there are also VFD or Variable Frequency Drive to control the speed of motor thruster. The use of VFD components in the system may cause harmonic interference. Harmonic itself can be regarded as distortion in the sinusoidal waves due to the interference of other waves that have integer frequency multiples of their fundamental frequency due to the operation of non-linear thruster motor. Some of the most affected components of this distortion are the communications equipment and the components used for measurement. This research conducted an analysis of harmonic disturbance arising from the operation of 2 units bow thruster on DP Ship by simulating 6 scenarios of generator configuration using simulation software. The results from this research were total harmonic distortion value or VTHD of the system that complies with standards and rules, also the specification of a passive harmonic filter to reduce the VTHD value at the specific harmonic order.

Transient Voltage Analysis for Dynamic Positioning Closed Bus Electrical System on Ship in Laboratory Scale Sardono Sarwito; Eddy Setyo Koenhardono; A.A Masroeri; Indra Ranu Kusuma; Mochamad Nur Ichwan
International Journal of Marine Engineering Innovation and Research Vol 4, No 3 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Ships equipped with a dynamic positioning system has a more number of thuster than ships that are not equipped with a dynamic positioning system. The addition of this thruster resulted in a significant increase in electrical loads so that the power plant will be added to the vessel. Dynamic positioning is a system used to support offshore vessel work consisting of a collection of equipment and control systems that work simultaneously to maintain the position of a vessel in accordance with which has been input into the system. Installation of the dynamic positioning system on the vessel affects the electrical system of the vessel. In the operation of electrical system on the vessel found the disturbances that arise one of them is transient interference that causes the change of voltage and frequency value in a short time. A Transient voltage occurs within a few seconds where the system conditions are unstable. The research was conducted in a laboratory scale by modeled a series of vessels that have the system with existing laboratory equipment where transient interference occurred due to the starting motor so that it is done Analysis of the magnitude of the voltage and frequency in the specified scenario as well as finding a solution to correct emerging interference that exceeds the standard. In the experiments made some configuration changes and obtained the result that the configuration of Split Plant 1 generator thruster has good system stability capable of achieving a stable condition with a loading of 50%. As for the loading of 60% stability of the system is unstable and can be improved again with the addition of capacitor.

Design of Protection Coordination for Overcurrent on Electrical System in Tanker Ship Plan Using Electro Mechanical Trip Device Indra Ranu Kusuma; Eddy Setyo Koenhardhono; Riantini Karmina
International Journal of Marine Engineering Innovation and Research Vol 1, No 4 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Disturbance of power system in ship is unavoidable case that required a function from safety system to separate the affected parts of system. The disturbance in electrical system generally is a short-circuit current. It is affected when there are two conductors having lowest impedance in normal condition that have two different voltages thus causing an overcurrent. There is one of the device protection to prevent a disturbance like short circuit current, is circuit breaker. It opens the contact with component or system that disturbance using electromechanical trip device. The principal operating of trip device is using electric current flow in the circuit breaker and the magnet induces the tripping part to moving the contact from closed position to the opened position. The main discussion is to coordinate circuit breakers in four operating conditions of the ship's generator using software ETAP. The simulation of the result obtained value of short circuit in main bus one at sailing condition is 8.2 kA. Tripping time for the circuit breakers in sailing condition at one typical disturbance are 0.75 seconds for circuit breaker number 29; 0.83 seconds for circuit breaker number 37 and 1 second for circuit breaker number 28.

Analysis of Electric Propulsion Performance on Submersible with Motor DC, Supply Power 10260AH at Voltage 115VDC Indra Ranu Kusuma; Sardono Sarwito; Ristita Anggarini Widya Ayu Irawati
International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Electric propulsion is the ship system using propulsion motor to replace performance of main engine. The application of diesel engine as propulsion system have some problems and weaknesses such as diesel engine unability to operate when submersible vessel is operating under sea. To overcome that problems in submersible vessel, alternative solution of ship propulsion is required. DC Motor can be used as this alternative solution. Submersible vessel use electric propulsion system with DC Motor because DC Motor has advantages of easy rotation setting and does not cause noise when submersible vessel is diving. This bachelor thesis will study the application of DC Motor as an electric propulsion system on submersible vessel with length 59,57 m in series and parallel circuit by simulation using MATLAB software. The simulation data obtained are rotation and torque of DC Motor. From these simulation, it can be concluded that parallel circuit rotation is greater than series circuit rotation. It caused the greater speed and lower power in parallel circuit.

Co-Authors A.A Masroeri Agoes Achmad Masroeri Bayu Dwi Atmoko Eddy Setyo Koenhardhono Eddy Setyo Koenhardono Mochamad Nur Ichwan Riantini Karmina Ristita Anggarini Widya Ayu Irawati Sardono Sarwito Sardono Sarwito Yose Gregory Tarigan

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