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JURNAL NASIONAL TEKNIK ELEKTRO
Published by Universitas Andalas
ISSN : 23022949     EISSN : 24077267     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering
Jurnal Nasional Teknik Elektro (JNTE) adalah jurnal ilmiah peer-reviewed yang diterbitkan oleh Jurusan Teknik Elektro Universitas Andalas dengan versi cetak (p-ISSN:2302-2949) dan versi elektronik (e-ISSN:2407-7267). JNTE terbit dua kali dalam setahun untuk naskah hasil/bagian penelitian yang berkaitan dengan elektrik, elektronik, telekomunikasi dan informatika.
Arjuna Subject : -
Articles 610 Documents
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Average Voltage and Multilayer Perceptron Neural Network Based Scheme to Predict Transient Stability Status Frimpong, Emmanuel Asuming; Okyere, Philip; Asumadu, Johnson
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 2: July 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.323 KB) | DOI: 10.25077/jnte.v8n2.668.2019

Abstract

This paper presents a technique that predicts the transient stability status of a power system after a disturbance. It uses generator bus voltage as input parameter and a trained single-input multilayer perceptron neural network (MLPNN) as decision tool. When activated, the scheme samples voltages of all generator buses. Two sets of voltage values are extracted from each sampled generator bus voltage. For each set, the minimum voltage value is obtained. An average value is computed from the minimum voltage values extracted from the first sample sets of the various generator buses. The average value is then used to compute the deviations of the minimum voltage values from the second sets of data. The deviations are then summed and used as input to a trained MLPNN which indicates the stability status. The technique was tested using the IEEE 39-bus test system and its accuracy found to be 98.97%.
Potential for Energy Savings in Educational Institutions in Ghana Twumasi, Elvis; Frimpong, Emmanuel Asuming; Novihoho, Leslie
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 3: November 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.749 KB) | DOI: 10.25077/jnte.v8n3.661.2019

Abstract

This paper presents the results of an energy audit carried out to assess the potential of energy savings in educational institutions in Ghana using the Kwame Nkrumah University of Science and Technology (KNUST) as the case study institution. It also outlines a simple and effective technique for such an audit. The College of Engineering; one of the six Colleges of KNUST was used as the study location. Light bulbs and fans at the classrooms, corridors, laboratories and washrooms were monitored for energy wastage. The monitoring period was one month. The energy wastage over the period was estimated to be 1718.24kWh, which is high. The yearly energy wastage at KNUST for the areas assessed is projected to be 95.276MWh, which is alarming. Urgent steps are therefore needed to curb this wastage.Keywords: Energy auditing, Energy efficiency, Energy efficiency measures, Energy saving and Energy wastage
OTOMATISASI SENSOR LOAD CELL UNTUK MENGATASI OVERLOAD KENDARAAN Kurnia, Rahmadi; Firdaus, Rifki; Lufti, Lucyana; Anshor, Muhammad Habib
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 2: July 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.517 KB) | DOI: 10.25077/jnte.v8n2.666.2019

Abstract

Kelebihan muatan merupakan suatu hal yang sering diabaikan oleh para pengemudi. Padahal, kelebihan muatan memberikan dampak di berbagai sisi. Peningkatan emisi gas buang, kerusakan badan jalan, bahkan kecelakaan lalu lintas dapat diakibatkan oleh kelebihan muatan kendaraan. Jembatan timbang merupakan seperangkat alat untuk menimbang kendaraan yang dipasang secara tetap merupakan solusi yang ditawarkan pemerintah untuk mengatasi masalah tersebut.  Namun sayangnya masih sering ditemukan pengemudi yang mengangkut beban melebihi batas angkut yang ditetapkan oleh pemerintah. Tujuan perancangan ini adalah menghasilkan prototipe kendaraan bak terbuka yang mampu mencegah mesin kendaraan tersebut beroperasi dengan kondisi beban berlebih dengan mengetahui hasil pembacaan sensor load cell. Perancangan sistem dan prototipe ini merupakan perancangan yang menyerupai sistem lift. Alarm peringatan, pintu tidak dapat ditutup serta lift tidak dapat dioperasikan merupakan indikator yang menandai bahwa lift dalam kondisi kelebihan muatan. Dengan mengadopsi sistem lift ini, maka dirancanglah suatu prototipe machine-stopping system suatu sistem built-in yang terdiri dari komponen berupa buzzer, relay, LED dan motor servo yang akan menghalangi suatu kendaraan beroperasi dalam keadaan kelebihan muatan.
Analisa Kinerja Automatic Voltage Regulator Dalam Domain Waktu Menggunakan Metoda Ziegler-Nichols Dengan Pendekatan First Order Plus Dead Time Laksono, Heru Dibyo; Riska, N.; Novizon, Novizon
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 3: November 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.564 KB) | DOI: 10.25077/jnte.v8n3.669.2019

Abstract

Electric power systems produce power that can be used for various purposes. The distribution of electrical power and its relationship to the voltage and current generated by the generator. Voltage can change with changes in load. The change of voltage is undesirable due to it can cause disturbances to the power system. A device called Automatic Voltage Regulator (AVR) is used to maintain the voltage stable. This AVR is equipped with a control system to get the voltage stability following the specified criteria. In this study, the Ziegler -Nichols (Z-N) method is used with the First Order Plus Dead Time (FOPDT) approach. FOPDT is used for AVR control based on frequency response and transfer function methods. AVR used is direct current type AVR. The design that fulfils the criteria for controlling the voltage transfer response of direct current type AVR systems is the Proportional Integral Differential (PID) controller. This PID is designed using the Ziegler-Nichols method with the FOPDT approach based on the transfer function method. Information on the simulation results of the direct current type of system switching AVR response is obtained where the steady-state error value is 0.0000, the rise time value is 0.6114 seconds, the peak time value is 1.4391 seconds, the peak value is 1.1492 seconds, the maximum throughput is 14.942% and time to state steady reaches value at 2.5562 seconds. The values of parameter control are k of 13.2000, L of 0.4283, T of 1.0817, Proportional constant (Kp) of 0.2296, integral time constant (Ti) of 0.8564 and differential time constant (Td) of 4.6667.Keywords : Ziegler-Nichols, Fisrt order plus dead time, Automatic voltage regulator, Transient analysis AbstrakSistem tenaga listrik menghasilkan daya yang dapat di gunakan untuk berbagai keperluan. Penyaluran daya listrik ini erta hubungan nya dengan tegangan dan arus yang di hasilkan oleh pembangkit. Tegangan dapat berubah-ubah dengan berubahnya beban. Perubahan tegangan ini tidak diinginkan karena dapat mengakibatkan gangguan pada sistem tenaga. Untuk menjaga agar tegangan tetap stabil digunakan Automatic Voltage Regulator (AVR). AVR ini dilengkapi dengan sistim pengendalian untuk mendapatkan kestabilan tegangan sesuai dengan kriteria yang di tetapkan. Pada penelitian ini digunakan metoda Ziegler -Nichols (Z-N) dengan pendekatan First Order Plus Dead Time (FOPDT) berdasarkan tanggapan frekuensi dan metoda fungsi alih sebagai metoda pengendali AVR dan AVR yang digunakan adalah AVR tipe arus searah.Pengendali yang memenuhi kriteria rancangan untuk pengendalian tanggapan peralihan tegangan sistem AVR tipe arus searah adalah pengendali Proporsional Integral Diferensial (PID). Pengendali Proporsional Integral Diferensial (PID) ini dirancang dengan menggunakan metoda Ziegler-Nichols dengan pendekatan First Order Plus Dead Time (FOPDT) berdasarkan metoda fungsi alih. Informasi hasil simulasi tanggapan peralihan sistem AVR tipe arus searah yang diperoleh dimana nilai kesalahan keadaan mantap sebesar 0.0000, nilai waktu naik sebesar 0.6114 detik, nilai waktu puncak sebesar 1.4391 detik, nilai puncak sebesar 1.1492 detik, nilai lewatan maksimum sebesar 14.942 % dan nilai waktu keadaan mantap sebesar 2.5562 detik. Untuk nilai parameter  pengendali yang digunakan adalah k sebesar 13.2000, L sebesar 0.4283, T sebesar 1.0817, konstanta Proporsional (Kp) sebesar 0.2296, konstanta waktu integral (Ti)  sebesar 0.8564 dan konstanta waktu diferensial (Td) sebesar 4.6667.Kata Kunci :Ziegler-Nichols, Fisrt order plus dead time, Automatic voltage regulator, Analis peralihan
Penentuan Posisi Sudut Matahari Menggunakan ANFIS dalam Aplikasi Tracker Panel Surya Irfan, Muhammad; Pakaya, Ilham; Faruq, Amrul
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 3: November 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.884 KB) | DOI: 10.25077/jnte.v8n3.671.2019

Abstract

Solar panels have constraints on output power that are not large enough and they are highly depend on natural conditions. Solar panel power depends on the intensity of sunlight received and the temperature of the surrounding environment. In order to get the maximum output power of the solar panel, an additional device called the solar tracker is needed. This research has contributed to increasing the output power of solar panels by directing solar panels perpendicular to sunlight. The use of this research is very useful in the application of the multi-axis tracker application from the sun. By knowing the rising angle of the sun every morning and the circulation angle to sunset, the tracker will work quickly so that the energy used for movement is very small. The reference angle generated by the ANFIS training algorithm is more accurate because the calculated data will be confirmed again by the sensor. And this system can work offline, without being connected to a data center, so it can be used in remote or isolated areas.Keywords : Sun Tracking System, MPPT, ANFIS, Solar Panels AbstrakPanel surya memiliki kendala pada daya keluaran yang tidak cukup besar dan sangat tergantung oleh kondisi alam. Daya panel surya sangat tergantung dari intensitas cahaya matahari yang diterima dan suhu lingkungan sekitar. Agar mendapatkan daya keluaran panel surya yang maksimal dibutuhkan perangkat tambahan yang disebut tracker matahari. Penelitian ini memiliki kontribusi dalam meningkatkan daya keluaran panel surya dengan mengarahkan panel surya tegak lurus dengan cahaya matahari. Penggunaan penelitian ini sangat bermanfaat dalam penerapan aplikasi tracker multiaxis dari matahari. Dengan mengetahui sudut terbitnya matahari pada setiap pagi hari dan sudut edar sampai dengan terbenam, tracker akan bekerja dengan cepat sehingga energi yang digunakan untuk pergerakan sangat kecil. Sudut referensi yang dihasilkan oleh algoritma pelatihan ANFIS, lebih akurat karena data hasil perhitungan akan dikonfirmasi kembali oleh sensor. Serta sistem ini dapat bekerja secara offline, tanpa terhubung dengan pusat data, sehingga dapat digunakan pada area terpencil atau terisolasi.Kata Kunci : Posisi Sudut Matahari, MPPT, ANFIS, Panel Surya  
Cover Vol. 8, No. 2, July 2019 Teknik Elektro, Jurnal Nasional
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 2: July 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.783 KB) | DOI: 10.25077/jnte.v8n2.731.2019

Abstract

JNTE Cover can be download here.
Analisa Potensi Embung Itera Sebagai Pembangkit Listrik Tenaga Pico Hydro (PLTPH) Corio, Dean; Kananda, Kiki; Salsabila S, Khansa
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 3: November 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.773 KB) | DOI: 10.25077/jnte.v8n3.691.2019

Abstract

Institut Teknologi Sumatera (ITERA) has 5 reservoirs with lip embankment construction higher than the normal water level and have steep elevations with different catchment areas (DTA). By using the Google Earth Pro software, it is known that DTA reservoirs A, B, C, D, and E are respectively 1.728 ha; 1,146 ha; 1,052 ha; 0.844 ha; and 9.562 ha. This study aims to determine the potential energy that might be generated from the 5 reservoirs while still considering the integrity of the ecosystem. The power plant is in the form of a Pico hydro power plant that can be used as a power plant practicum media by Itera students, especially electrical engineering study program students. The power plant's rapid pipe is designed to be installed 1 meter below the normal water level and the operating time is based on the rain discharge that is accommodated by the reservoir in one month. The method used is field observation, rainfall data collection, calculations using practical rational methods and hydropower hydraulics. The results of data processing of five reservoirs owned by ITERA show that the greatest potential that can be used as a source of electricity generation is reservoirs E. The analysis shows that the discharge capacity of 0.216 m3 / s and an effective head of 5.46 m can produce an electric power generated of 7,071 kW with operational time at April.Keywords : Discharge, Rain Intensity,  Pico Hydro.AbstrakInstitut Teknologi Sumatera (ITERA) memiliki 5 embung dengan konstruksi bibir embung  lebih tinggi dari batas muka air normalnya serta memiliki elevasi curam dengan luasan Daerah Tangkapan Air (DTA) masing masing-nya berbeda. Melalui software Google Earth Pro diketahui luas DTA embung A, B, C, D, dan E secara berturut-turut yaitu 1,728 ha; 1,146 ha; 1,052 ha; 0,844 ha; dan 9,562 ha. Penelitian ini bertujuan untuk mengetahui potensi energi yang mungkin dibangkitkan dari 5 embung tersebut dengan tetap mempertimbangkan keutuhan ekosistemnya. Pembangkit berupa pembangkit listrik tenaga pico hydro yang dapat  digunakan sebagai media praktikum pembangkit tenaga listrik oleh mahasiswa Itera, khususnya mahasiswa program studi teknik elektro. Pipa pesat pembangkit listrik didesain terpasang 1 meter dibawah muka air normal dan waktu pengoperasian berdasarkan debit hujan yang tertampung oleh embung dalam satu bulan. Metoda yang dilakukan adalah observasi lapangan, pengumpulan data curah hujan, perhitungan menggunakan metode rasional praktis dan persamaan daya hidraulik tenaga air. Hasil pengolahan data lima embung yang dimiliki Itera didapatkan potensi terbesar yang bisa dimanfaatkan sebagai sumber pembangkit listrik adalah embung E. Hasil analisa menunjukkan debit tampungan 0,216 m3/s dan head efektif 5,46 m dapat menghasilkan daya listrik terbangkitkan sebesar 7,071 kW dengan waktu operasional pada bulan April.Kata Kunci : Debit, Intensitas Hujan, Pico Hydro.
Pengendalian Mobile Robot Non-Holonomic Berdasarkan Gestur Jari Menggunakan Template Matching Chaidir, Ali Rizal; Herdiyanto, Dedy Wahyu; Kalandro, Guido Dias
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 1: March 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.083 KB) | DOI: 10.25077/jnte.v9n1.741.2020

Abstract

Control of non-holonomic mobile robots based on gestures is a technique for controlling non-holonomic mobile robot movements using finger gestures. Mobile robots can move forward, backward, turn right, and turn left based on finger gestures. The task can be done based on the operator's command. One of the techniques used by operators to control robots is to use sensors installed in the operator's hands. In addition to requiring sensor components, the use of sensors requires additional hardware to acquire sensor readings. This research offers another solution for controlling non-holonomic mobile robots. The solution is to use a camera to recognize the robot operator's hand gestures. Each gesture is stored as a binary image, then each gesture captured by the camera is compared with the previously saved image using template matching, so that the movement of the non-holonomic wheeled robot moves based on the operator's finger gesture. The results of this study indicate the camera can recognize finger gestures to give commands to the robot. Finger gestures are used to give commands to the robot to move forward, backward, turn right and left, and stop, the percentage of success of the test is 95%.Keywords : Gesture, Mobile robot dan Template matchingAbstrakPengendalian mobile robot non-holonomic berdasarkan gestur adalah suatu teknik untuk mengatur gerakan mobile robot non-holonomic menggunakan gestur jari, setiap gestur mewakili gerakan robot. Mobile robot dapat bergerak maju, mundur, belok kanan, dan belok kiri berdasarkan gestur jari. Tugas tersebut dapat dilakukan berdasarkan perintah operator. Dengan memanfaatkan perintah operator, pergerakan robot tidak tergantung pada lingkungan yang tetap. Salah satu teknik yang digunakan operator untuk mengendalikan robot adalah menggunakan sensor yang terpasang di tangan operator. Selain membutuhkan komponen sensor, penggunaan sensor membutuhkan perangkat keras tambahan untuk mengakuisisi data hasil pembacaan sensor. Penelitian ini menawarkan solusi lain untuk mengendalikan mobile robot non-holonomic, yaitu menggunakan kamera untuk mengenali gestur tangan operator robot. Setiap gestur disimpan dalam bentuk citra biner, kemudian setiap citra gestur yang tertangkap kamera dibandingkan dengan citra yang tersimpan sebelumnya menggunakan template matching. Sehingga pergerakan robot beroda non-holonomic bergerak berdasarkan gestur jari operator. Hasil dari penelitian ini menunjukkan kamera mampu mengenali gestur jari untuk memberikan perintah kepada robot. Gestur jari digunakan untuk memberikan perintah kepada robot agar bergerak maju, mundur, belok kanan dan kiri, dan berhenti, persentase keberhasilan dari pengujian tersebut adalah sebesar 95%.Kata Kunci : Gestur, Mobile robot dan Template matching 
Design and Implementation of Series Resonant DC-DC Converter Budiman, Firmansyah Nur; Amrad, Arridha
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 1: March 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.871 KB) | DOI: 10.25077/jnte.v9n1.736.2020

Abstract

The resonant DC-DC converter is known as advantageous over conventional DC-DC converter in terms of efficiency. This is primarily because the resonant converter operates at soft switching mode. In this paper, we report our work on the design and implementation of a series resonant DC-DC converter with full-bridge switching. The developed converter consisted of two main parts, namely the PWM signal-generating circuit as the driver for MOSFET and converter primary circuit. The first part was implemented by using Arduino UNO R3, whose output was amplified with IR2110 optocoupler. The latter was made up of full-bridge inverter, which employs MOSFET as the electronic switches, resonance circuit, and full-bridge uncontrolled rectifier. Performance of the developed converter was tested by supplying input voltage ranging from 20 to 30 V. It was shown that the converter functioned as a step-down “DC” transformer, i.e. voltage reducer. The maximum output voltage level obtained was half of the input, which was achieved at switching frequency of 40 kHz and efficiency of 50%. The converter was also tested to supply practical electrical load. In this case, a 12-V electric drill was put in place. The drill worked well, and a converter efficiency of 43% could be calculated during this operation.Keywords : DC-DC Converter, Series Resonance and Switching
Sizing Methodology for Hybrid Solar photovoltaic/Hydrogen System using Deterministic Balance Method (DBM)-Case Study in Egypt Selim, Alaa Emad El Din; El-Shimy, Mohamed; Amer, Ghada
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 1: March 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v9n1.688.2020

Abstract

A technical analysis based on modeling, simulation, optimization and verification was conducted for the design of an off-grid hybrid solar PV/hydrogen system. The main objective is to make sizing optimization of the off-grid system to meet the desired electric load of a residential community in a studied region. Additionally, the goal of this study is to have a 100% renewable fraction penetration in the energy mix resulting in a zero percentage of the greenhouse gas emissions and lowering the cost of energy from power systems and verifying the design concept using SAM (System Advisor Model). The effect of meteorological data inputs for the hybrid off-grid system was investigated in Cairo international Airport zone. The distributed power generation in this paper was using solar PV and Fuel Cell energy systems integrated with electrolyzer and hydrogen tank where the main resource for production is the PV modules so that it satisfies the load demand during the peak sun hours and supplying an excess energy to be stored for the later use of fuel cell to supply community load demand of average 4980 kWhr/day.Keywords : Solar PV, Fuel Cell, Hydrogen production, Optimization, off-grid

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