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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Teknologi Journal of Electrical Technology UMY International Journal of Artificial Intelligence Research JURNAL INSTEK (Informatika Sains dan Teknologi) INTEK: Jurnal Penelitian Jurnal Teknologi Elekterika JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Jurnal Teknik Mesin Sinergi Jurnal JEETech
Marhatang Marhatang
Politeknik Negeri Ujung Pandang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Library & Information Science Mechanical Engineering

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Analisis Kestabilan Transien dan Mekanisme Pelepasan Beban Pada Jaringan Listrik Wilayah Sulselbar Setelah Penambahan PLTU Punagaya Marhatang Marhatang; Makmur Saini; Muhammad Ikram Fauzan; Erniwati Erniwati
Jurnal Teknik Mesin Sinergi Vol 18, No 1 (2020): April 2020
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1648.521 KB) | DOI: 10.31963/sinergi.v18i1.2247

Abstract

Kebutuhan listrik semakin hari semakin meningkat baik itu pada sektor perumahan maupun sektor perindustrian. Seiring dengan pertumbuhan beban maka penambahan pembangkit juga diperlukan. Pada jaringan listrik wilayah Sulselrabar, telah diadakan penambahan sejumlah pembangkit dan salahsatunya adalah PLTU Punagaya Jeneponto yang berkapasitas 2x100 MW. Penambahan pembangkit ini menyebabkan kestabilan pada sistem bisa berubah, sehingga dibutuhkan studi kestabilan transien untuk mengetahui kestabilan sistem pada jaringan Sulselrabar saat terjadi gangguan.Pengambilan data berupa spesifikasi generator, transformator, jaringan transmisi dan beban yang ada pada Unit Pengaturan Beban PT. PLN Wilayah Sulselrabar. Pada penelitian ini dilakukan simulasi kestabilan transien menggunakan software ETAP 12.6  dengan memberikan gangguan  pada sistem berupa generator lepas dan hubung singkat. Selanjutnya jika sistem mengalami ketidakstabilan akan dilakukan mekanisme pelepasan beban. Berdasarkan hasil simulasi, menunjukkan bahwa pada kasus lepasnya generator unit 2 Barru, sistem masih dapat mempertahankan kestabilannya. Namun pada kasus lepasnya PLTU BE, rata-rata penurunan tegangan mencapai 9,34% dan menyebabkan karakteristik sistem sudah tidak dapat berada pada range yang diizinkan sehingga dibutuhkan pelepasan beban sebesar 56,213 MVA. Pada kasus hubung singkat, sistem masih dapat mempertahankan kestabilannya meskipun rata-rata penurunan tegangan sesaat pada saat terjadi gangguan mencapai 68,97%. 
Sistim Pembangkit Biogas Model Portabel Sonong Sonong; Muh Yusuf Yunus; Marhatang Marhatang; Remigius Tandioga; Herman Nauwir
Jurnal Teknik Mesin Sinergi Vol 12, No 2 (2014): Oktober 2014
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (282.157 KB) | DOI: 10.31963/sinergi.v12i2.1135

Abstract

Utilization of livestock manure has not been optimal, whereas livestock manure can be used as feedstock to produce renewable energy (renewable ) in the form of biogas . The problem that occurs is that people have not been able to utilize the manure waste especially cow dung as fuel alternative energy producers. Biogas is a mixture of combustible gas , which is produced by anaerobic fermentation of organic material such as animal manure and agricultural wastes in a digester chamber ( digester ) . In this study digester drum is made of plastic and stuffing materials derived from a mixture of cow dung and water . This study aims to design a portable device of biogas models are easy to assemble , inexpensive and can perform well . From the results of this study can be obtained biogas pressure and long flame generated by means of producing biogas and portable models can be applied to biogas stoves.
RANCANG BANGUN TURBIN SAVONIUS UNTUK PENERANGAN LAMPU PANTAI Musrady Mulyadi; Marhatang Marhatang
Jurnal Teknik Mesin Sinergi Vol 11, No 2 (2013): Oktober 2013
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.085 KB) | DOI: 10.31963/sinergi.v11i2.1107

Abstract

Penelitian ini bertujuan merancang dan membuat serta menguji turbin tipe savonius –VAWT dengan bahan sudu trubin dari drum plastik untuk menghasilkan listrik. Rancang bangun turbin angin ini menggunakan metode perancangan dan penentuan dimensi turbin angin berdasarkan penentuan Rotor Power Coeficient (Cpr), Tip Speed Ratio (TSR) dan Rotor Torque Coeficient (Cq), kemudian dilaukan perakitan,dan pengujian turbin angin. Pada pengujiannya digunakan pada kondisi berbeban di kota Makassar di Kecamatan Tamalate, Kelurahan Tanjung Merdeka dengan memanfaatkan angin pantai. Hasil Penelitian Turbin Angin savonius tipe VAWT dengan konstruksi tinggi blade 90 cm dan diameter 82,5 cm yang bisa berputar pada kecepatan angin minimal 0,6 m/s. Hubungan kecepatan angin terhadap arus generator, semakin besar kecepatan angin maka semakin besar pula arus yang di dapat dengan arus minimum 0,01A dan arus maksimum yaitu 0,146A.Putaran poros turbin maksimum 91,1 Rpm diperoleh pada kecepatan angin 5,5 m/s, sedangkan kecepatan angin 0.6 m/s putaran minimum poros turbin 15 rpm, Dari grafik hubungan antara tip speed rasio dan koefisien daya,bahwa koefisien daya bergantung pada perbandingan ujung sudu,dan ditandai dengan kurva Cp berbanding dengan kecepatan ujung sudu-tip speed rasio curve.
RANCANG BANGUN SISTEM ELECTRONIC LOAD CONTROLLER (ELC) PADA PLTMH PALLAWA (KAB. BONE) Tasrif AS; Marhatang Marhatang; Zulfitrah Natsir; Novianty Paelongan
Jurnal Sinergi Jurusan Teknik Mesin Vol 20, No 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v20i2.4166

Abstract

Penelitian ini bertujuan untuk menerapkan pengontrolan beban secara elektronik (ELC) untuk meningkatkan stabilitas frekuensi generator pada PLTMH. Penelitian dilakukan dengan metode simulasi pada generator 3 kW yang dilengkapi dengan beban komplemen dan beban konsumen. Pengujian dilakukan dengan memutar generator pada pembebanan penuh dan mensuplai daya listrik ke beban komplemen. Kemudian beban konsumen dinaikkan secara bertahap untuk melihat perubahan frekuensi. Jika beban konsumen besar maka frekuensi akan turun. Perubahan frekuensi tersebut dideteksi oleh sensor frekuensi kemudian output dari sensor frekuensi diterima oleh mikrokontroler yang akan diolah untuk mengatur switching pada TRIAC yang mengendalikan daya listrik yang dialirkan ke beban komplemen. Proses pengaturan ini akan berulang dan selesai jika frekuensi berada pada set point 49,5 – 50,5 Hz. Hasil pengujian penelitian pengendalian frekuensi dengan menggunakan ELC diperoleh frekuensi yang stabil pada range 49,64 -50,22 Hz. 
Rancang Bangun Penjejak Matahari Untuk Optimasi Daya Panel Surya Marhatang Marhatang; Yiyin Klistafani; Fitra Firdaus; Ahmad Yani
Jurnal Sinergi Jurusan Teknik Mesin Vol 21, No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v21i1.4231

Abstract

The limitation in energy provision has become quite a crucial issue. The oil reserves in Indonesia continue to decline, and a similar situation is occurring with coal reserves. Thus, a conventional and renewable energy source is needed that does not harm the environment, for example, solar energy. This research aims to harness solar energy that can still be converted into electrical energy, and it also aims to improve the power output of solar panels for better optimization. The research starts by planning the motor, battery capacity, and solar panel capacity. Field testing is conducted at Merdeka Field, Ujung Pandang State Polytechnic, and data is collected under two conditions: with the use of a sun tracker and without a sun tracker. The power output obtained from each solar panel is then calculated. Based on the research results, the testing using a sun tracker yielded a power output of 17,857 Watts with a horizontal position of 47° Northeast and a vertical position of 15° at 11:30 AM WITA (Central Indonesia Time). Meanwhile, during the testing without a sun tracker, it resulted in a power output of 16.2 Watts with a horizontal position of 0° North and a vertical position of 5° at 1:00 PM WITA, indicating an average increase of 43.03%.
Design of Wind Power Generator for Tambak Houses Marhatang Marhatang; Herman Nawir; Muhammad Ruswandi Djalal; Maudini Maudini; Muh Amar Syarifuddin
Journal of Electrical Technology UMY Vol 7, No 1 (2023): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jet.v7i1.17457

Abstract

Wind Power Generation (WPG) requires specific wind conditions to generate electrical energy. Indonesia's wind potential enables the development of small-scale power plants. Innovations in windmill technology need to be developed to ensure maximum results in low wind speed conditions. This research proposes the design and implementation of WPG using a vertical axis to provide lighting for pond houses. The goal is to benefit pond workers in coastal areas that lack electricity from the National Electric Company. The manufacturing stages include design and testing. Based on the design results, the dimensions of the propeller area are 0.393m, the frame height is 1.5m, and the wind turbine height is 0.75m. The performance test of the WPG yielded the highest turbine power value at 15.30 WITA, with a turbine power output of 25.38 Watts.
RANCANG BANGUN PROTOTIPE KENDALI KECEPATAN MOTOR INDUKSI BERDASARKAN PERUBAHAN SUHU BERBASIS PWM YUNUS, A.M. SHIDDIQ; MARHATANG, MARHATANG; MULKI, ABDUL MALIKIL; DJALAL, MUHAMMAD RUSWANDI
Jurnal INSTEK (Informatika Sains dan Teknologi) Vol 4 No 1 (2019): APRIL
Publisher : Department of Informatics Engineering, Faculty of Science and Technology, Universitas Islam Negeri Alauddin, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2098.605 KB) | DOI: 10.24252/instek.v4i1.10561

Abstract

Penelitian dimulai dengan pembuatan perangkat keras dan perangkat lunak mikrokontroler, dan perakitan Zero Crossing Detector berfungsi untuk mensinkronkan antara input dan output yang digunakan untuk pemrograman waktu tunda sudut picu TRIAC dan pembentukan generator sinyal gigi geregaji rangkaian  komparator sebagai pembanding antara rangkaian kontrol dan sinyal gigi gergaji yang berfungsi pembentukan sinyal PWM. Dari bentuk gelombang yang didapatkan dibuat pembangkit pulsa PWM satu fasa kemudian dapat dilihat bentuk sinyal yang diamati dengan osiloskop. Selanjutnya dilakukan dengan pengamatan bentuk gelombang PWM tegangan keluaran dan kecepatan motor berdasarkan perubahan suhu. Hasil penelitian menunjukkan bahwa pengaturan suhu dan kecepatan putar motor induksi untuk frekuensi tetap 50 Hz dengan 7 indeks modulasi berbeda dengan metode PWM sinusioda berbasis mikrokontroler dapat menghasilkan putaran motor yang berubah-ubah. Kata Kunci—Motor Induksi satu fasa; PWM; dan Mikrokontroler 
Commisioning Test of 3 x 3kW Solar Power Plants for Laboratory Purpose Yunus, A.M Shiddiq; Hamzah, Nur; Mulyadi, Musrady; Firman, Firman; Yunus, Muhammad Yusuf; Marhatang, Marhatang; Bhuana, Chandra; Klistafani, Yiyin
INTEK: Jurnal Penelitian Vol 10 No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i1.4279

Abstract

A laboratory is an important part in the learning and teaching process, therefore, it is necessary to improve both in terms of equipment and laboratory management standards. State Polytechnic of Ujung Pandang has carried out the design process for a solar power plant (SPP) system with a capacity of 3 x 3 kW to support the learning process related to alternative and renewable energy lectures and practicum. One part of the procedure for activating newly installed laboratory equipment is the commissioning test. From the commissioning results, the results show that 3 x 300 Wp and independent 375 Wp SPP can work well with an average DC voltage rating of 80 V and for AC loads with an average voltage of 220 V. All types of loads, both AC and DC can work properly after going through the DC Couple and AC Couple with the inverter.
Prototype of AC Microgrid Solar Power Plant with Off-Grid System Marhatang, Marhatang; Yunus, A.M Shiddiq; Djalal, Muhammad Ruswandi; Alkautsar, Rifaldi; Caturindah, Winarty
INTEK: Jurnal Penelitian Vol 10 No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i1.4325

Abstract

AC microgrid solar power plants can be used as an alternative to overcome the problem of unevenly distributed electricity demand in Indonesia. Prior to implementation, a model or prototype is required to test and provide insights about the solar power plant's functionality as an electric energy generator. The aim of this research was to develop a solar power plant for AC loads and assess the performance of AC Microgrid solar power plants using an Off-grid system. The test results lead to the conclusion that the efficiency of the AC Microgrid solar power plant with the Off-grid system is highly dependent on the intensity of solar radiation, whether it is high or low, striking the panel. The solar panel efficiency ranged from a maximum of 5.54% to a minimum of 4.16%, while the system efficiency varied between a maximum of 8.65% and a minimum of 7.95%.
Design of a-based smart meters to monitor electricity usage in the household sector using hybrid particle swarm optimization - neural network Yunus, Muhammad Yusuf; Marhatang, Marhatang; Pangkung, Andareas; Djalal, Muhammad Ruswandi
International Journal of Artificial Intelligence Research Vol 3, No 2 (2019): December 2019
Publisher : Universitas Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (660.283 KB) | DOI: 10.29099/ijair.v3i2.82

Abstract

The procedure is training and testing the nerves that will be made. Matlab software has a Neural Network tool, which in this study will be used. Load sampling data is used as input data for neural network training. As output / target load classification is used. Load classification method, which is 1 for TV load classification, 2 for fan load, 3 for iron load, 4 for water pump load, 5 for lamp load, 6 for dispenser load, and 7 for fan iron load combination. The total load is 6 single loads and 1 combination load. One load combination was chosen because, on the combination load characteristics after the fan has characteristics that are not the same as the others. Data sampling of the current of each load will be used as neural network training. Load data used is 30 samples or for 30 seconds, with every minute the data is taken. From the results of the training, it can be seen that the biggest training error is in the seventh data, namely the identification of the load on the classification of the fan-iron load. This is because the current pattern on the iron and fan with the iron or fan itself has almost the same characteristics. However, for this process networks will be used and then the PSO optimization method is used to reduce the error, in the next study. From the test results, it is shown that by varying the input current data of each load, the network has been able to identify well, even though in the data classification load 7, the load of the iron-fan combination still has a large error. This will be corrected in subsequent studies with Particle Swarm Optimization (PSO) algorithm optimization.
Co-Authors A. M. Shiddiq Yunus A. Muh. Raihan Abdul Rahman Ahmad Yani Alkautsar, Rifaldi Andareas Pangkung Andareas Pangkung Andi Muh Farid Parenrengi Andi Muh. Ilham Andreas Pangkung Apollo Apollo Aulia Ramadhana Buana, Chandra Caturindah, Winarty Chandra Bhuana Chandra Buana Citri Novianti Irlan Dwia Ayanis, Rifa Farid Parenrengi, Andi Muh Firman Firman Fitra Firdaus Herman Nauwir Herman Nawir Herman Nawir Herman Nawir Herman Nawir, Herman Husnul Khatimah Irmawati Irmawati Irmawati Irmawati Klistafani, Yiyin Lewi Lewi Lewi Lewi Makmur Saini Maudini Maudini Muh Amar Syarifuddin Muh Yusuf Yunus Muh. Ilham, Andi Muhammad Ikram Fauzan Muhammad Ruswandi Djalal Muhammad Yusuf Yunus Muhammad Yusuf Yunus Muhammad Yusuf Yunus Muhammad Yusuf Yunus MULKI, ABDUL MALIKIL Musrady Mulyadi Novianty Paelongan Nur Hamzah Nur ‘Azah Remigius Tandioga Remigius Tandioga Remigius Tandioga Rifa Dwia Ayanis Sonong Tasrif AS Twenty Tri Rante Payung Ummul Fasiha Yiyin Klistafani Yusuf Yunus, Muhammad Zulfitrah Natsir