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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
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Articles 24 Documents
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Search results for , issue "Vol. 11 No. 4 (2023)" : 24 Documents clear
PENGUJIAN ARUS MENGGUNAKAN SENSOR SCT 013-000 PADA PEMBANGKIT LISTRIK TENAGA SURYA BERBASIS INTERNET OF THINGS Alfi Maghfirah; Akhmad Zainuri; Onny Setyawati
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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The Internet of Things (IoT) has grown rapidly over the past few years following the increasing demand in communication and control for various devices and gadgets. A key requirement implemented for modern IoT devices is to provide effective connectivity to ensure long-distance communication and data transfer in a wireless environment. Solar power is an energy source that will never run out. This energy can also be used as an alternative energy that is converted into electrical energy, using solar panels. The performance of a solar panel can be determined by measuring its output parameters such as voltage, current, and power. The voltagecurrent characteristics of solar panels are influenced by several factors, including the intensity of solar radiation and the operating temperature of the solar panels. This system is designed to monitor the current using the SCT 013-000 sensor using a microcontroller that communicates serially with ESP32 and implements a monitoring database to display the current on the android application, namely Solar Home System. The results of receiving data from the microcontroller to transfer data to the database by connecting the internet network. The results of the study found that current measurements using the SCT 013-000 sensor obtained a current accuracy value of 99,5%. Keywords: solar panel, monitoring, sensor, accuracy
ANALISIS KETIDAKSTABILAN TEGANGAN DAN FREKUENSI PADA PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) ANDUNGBIRU KECAMATAN TIRIS KABUPATEN PROBOLINGGO Muhammad Ryan Al Hafidz; Rini Nur Hasanah; Lunde Ardhenta
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Microhydro Power Plant (MHPP) is a small-scale power plant that is environmentally friendly which utilizes the existing water discharge around us to be converted into electrical energy such as irrigation canals or rivers. Because the small-scale MHPP tends to use synchronous generators which are relatively affordable. When a synchronous generator is subjected to a load of varying magnitude, the magnitude of the voltage will also vary. This causes voltage and frequency instability in the MHPP. This study will use MHPP Andungbiru Unit A2, Tiris District, Probolinggo Regency as a test object with a descriptive research type through a quantitative approach which aims to provide an overview of the voltage and frequency instability that occurs. The results of this study indicate that the highest/lowest voltage and frequency instability values, namely 274.6 volts/53 Hz and 118.5 volts/27.67 Hz, are due to the influence of changes in load current. This can cause the generator rotational speed to fluctuate, causing the resulting voltage and frequency to become unstable. The solution is to add water power to rotate the turbine shaft and rotate the generator faster so that it can reduce the value of the voltage drop caused by losses on the turbine and generator parts. This is because large electric power can increase the voltage and frequency without having to adjust the load. Additional water power can be done by making improvements to civil parts so that they comply with standardization. In addition, improvements to the electrical part, namely improvements to the ELC system, can also be used to achieve stable and more efficient voltage and frequency values. Keywords — MHPP, Synchronous Generator, Voltage, Frequency
IMPLEMENTASI SISTEM MONITORING DAN KLASIFIKASI KONDISI LINGKUNGAN UNTUK BUDIDAYA TANAMAN AEROPONIK BERBASIS INTERNET OF THINGS Ichsan Harun Wicaksono; n/a Nurussa’adah; Ponco Siwindarto
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Aeroponics is a cultivation method that involves suspending plant roots in the air. Aeroponic cultivation poses several challenges, such as maintaining optimal environmental conditions. In this research, the author designed an internet of things (IoT)-based automated environmental control system by implementing machine learning classification methods. The aim was to optimize the control function of environmental conditioning in aeroponic systems. The system was designed using an Arduino Uno microcontroller connected serially to a Raspberry Pi and connected to the Adafruit Io web platform via the MQTT communication protocol over the internet. In the classification system testing, the initial dataset underwent oversampling using the SMOTE method. The evaluation results showed that the K-Nearest Neighbors algorithm achieved an accuracy of 96,47% in classifying environmental conditions, while the Random Forest algorithm achieved an accuracy of 100%. Both algorithms successfully classified the aeroponic environmental conditions. In terms of the monitoring system, the system was able to send monitoring data to a web-based dashboard with a delay ranging from 0.091 seconds to 0.0142 seconds. Keywords: Aeroponic, Internet of Things (IoT), classification algorithm, KNN, Random Forest
ANALISIS SWITCH MULTIPLEXING POWER DECOUPLING DENGAN PWM RECTIFIER DALAM MEREDUKSI DIMENSI KAPASITOR DC-LINK PADA PENGGERAK TRAKSI KERETA API LISTRIK Farhan Afif Hanip; Waru Djuriatno; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Dampak dari perkembangan teknologi salah satunya adalah semakin mudahnya mobilisasi yang terjadi pada saat ini. Manusia dengan mudahnya menjangkau beberapa titik di dunia ini dengan teknologi saat ini. Salah satu yang menguatkan kondisi tersebut adalah keberadaan kereta api listrik. Daya listrik yang dibutuhkan Kereta Rel Listrik (KRL) ini akan disuplai dari sebuah gardu traksi menggunakan kawat konduktor yang membentang di bagian atas sepanjang rute KRL tersebut yang disebut dengan sistem catenary atau Listrik Aliran Atas (LAA). Rectifier yang ada pada kereta listrik akan merubah tegangan AC menjadi DC yang tentunya akan dipengaruhi oleh penggunaan kapasitor sebagai penyimpan energi. Kapasitor pun menjadi salah satu hal yang seharusnya diperhatikan. Jika kapasitas yang diperlukan besar untuk mengatasi tentunya akan berakibat ke dimensi kapasitor itu sendiri. Apalagi kapasitor dengan kapasitas yang besar sangat terbatas jenisnya. Maka dari itu penggunaan prinsip power decoupling digunakan. Dengan mengkombinasikan power decoupling dan PWM Rectifier mampu memperoleh kapasitor yang lebih kecil sekitar 10 kali lipat dari kebutuhan seharusnya tanpa mengurangi keefektifannya dalam mengatasi ripple yang dihasilkan yaitu 10%. Penggunaan komponen switching yang berfungsi ganda pada rectifier dan power decoupling diajukan sehingga penggunaan switching tambahan bisa diminimalisir. Pengontrolan tertentu diperlukan untuk kerja switchmultiplexing power decoupling dengan PWM Rectifier. Kata kunci— Kereta Rel Listrik, PWM Rectifier, Switchmultiplexing Power Decoupling, Ripple, Kapasitor
SIMULASI TWO LEVEL BOOST DC DC CONVERTER MENGGUNAKANSOFTWARE MATLAB SIMULINK Muhammad Wildan Nashrullah; Mochammad Rusli; n/a Rahmadwati
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Two level boost dc dc converter is a converter which has the advantage of being more economical if used in voltage increases in a large range. This research begins with data testing using MATLAB software, and emphasises the simulation by paying more attention to the parameters to adopt output voltage variations. Mathematical models in a physical system can be obtained in two ways, namely through analytical and experimental approaches. To obtain a system model is by using equations from the laws of physics and the components contained in the system. This research aims to boosting voltage in two level boost DC DC converter using Matlab simulink software. The method used in this research is a method with an experimental approach or identification method is the formation of a mathematical model of a physical system based on observation data by recording every relation of input and output data from a physical system. Then the data pairs are calculated with an algorithm from the identification method so that a mathematical equation that can represent the actual physical system will be obtained. Variations of conditions used in this analysis include changes in power supply of 250V, 360 Ω resistor, 4.5573.10-4 H inductor and 1.4583.10-6 F capacitor, and 16.67% duty cycle. The results obtained in this study are the influence of the variable values used to increase the output voltage generated by the fuel cell from 250V to 600V, as well as the modelling of the two-level DC DC boost converter to get the output voltage as desired is A1= -1.6298 A2= 0.6608 B1= -3.2604 B2=4.0692. Index terms—boost converter, TLBC, system identification, matlab simulink.
KOMPARASI DAYA ONE AXIS SOLAR TRACKER BERBASIS SUDUT MATAHARI DAN FIX SOLAR PANEL Gabriella Yolanda Krisanti; Tri Nurwati; Erni Yudaningtyas
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Indonesia is located on the equator so it has abundant sunlight all year. Solar energy is a potential energy source that can serve as an alternative energy to generate electricity. Utilization of solar energy to produce electricity using a semiconductor device, namely solar panels. Solar panels that are commonly used are solar panels that do not follow the movement of the sun (fixed solar panels). The absorption of solar energy in solar panels can be increased by making solar panels follow the direction of the sun's movement or commonly called solar trackers. One type of one-way solar tracker movement refers to the azimuth side movement. The angular movement of the sun with reference to the azimuth side can be predicted using calculations. Calculation of the angular movement of the sun depends on the time and location of data collection which includes latitude, longitude, and time zone. The data is then processed and produces the sun's azimuth angle which is the reference for the movement of the solar tracker. Increased absorption of solar energy can be shown through the greater power efficiency between the solar tracker and fixed solar panels. The efficiency results for increasing the power of the solar tracker averaged 21.228% from the tests on April 15, 16, 17 and 30, 2023. Keywords: Solar Panel, Solar Tracker, Calculation of the Angle Movement of the Sun, Power
KLASIFIKASI PENYAKIT MELANOMA MENGGUNAKAN WHALE OPTIMIZATION ALGORITHM SEBAGAI SELEKSI FITUR Aiman Muhamad Basymeleh; Panca Mudjirahardjo; n/a Rahmadwati
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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The biggest challenge in melanoma is distinguishing between benign and malignant skin diseases with various problems related to time and patient health to differentiate lesions in patients. To reduce these problems, an image classification system is required using several feature extraction methods on images, namely Gray Level Co-occurrence Matrix, contour features, and HSV image features. In this study, feature selection was also carried out using a metaheuristic algorithm, namely the Whale Optimization Algorithm (WOA), as feature optimization in the next stage, which is the classification stage using the Multilayer Perceptron Neural Network method. However, the results of testing the Multilayer Perceptron Neural Network on these feature extractions showed very good performance, especially in the case of HSV color feature extraction and Gray Level Co-occurrence Matrix (GLCM). In addition, the feature selection also showed the same results from the same feature extraction with a relatively faster prediction time. Keywords : Melanoma, Feature Extraction, Feature Selection, Whale Optimization Algorithm, Classification
RANCANG BANGUN SEPEDA LISTRIK TERINTEGRASI SISTEM KONTROL KECEPATAN, INTENSITAS CAHAYA, DAN PERINGATAN BAHAYA Yudika Putra Perdana Pangaribuan; Erni Yudaningtyas; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Electric bicycles in the modern era require useful features to transform transportation into a space for innovation, aiming for energy-efficient, environmentally friendly, and safe riding experiences. This research integrates several features, including the control system for bicycle lighting, hazard warning using a buzzer, PID control for the bicycle motor, and the use of supercapacitors in the battery system. The objective of the research on the bicycle lighting control system is to achieve stable and accurate control of light intensity with an average error rate of 5.887%, a recovery time of 1.032 seconds, and power consumptionranging from 2.784W to 8.664W. The objective of the hazard warning system using a buzzer is to create an automatic warning system based on Mamdani fuzzy logic, where the experimental PWM output matches the PWM output from the fuzzy design in MATLAB. The purpose of the PID control research is to enhance the performance of the bicycle's BLDC motor, aiming to reduce overshoot by 80%, rise time by 50%, and settling time by 50%. The experimental results of the implemented supercapacitor battery system demonstrate a decrease in the maximum voltage output from 42.2V to 35.5V and a reduction in the battery'speak current from 19.1A to 16.9A. Furthermore, the output power exhibits an average decrease from 679.172W to 586.508W. Keywords: PID, Light, Buzzer, Supercapacitor
RANCANG BANGUN SEPEDA LISTRIK TERINTEGRASI SISTEM KONTROL KECEPATAN, INTENSITAS CAHAYA, DAN PERINGATAN BAHAYA Wiam Mardliy Syahrir; Erni Yudaningtyas; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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Abstract

Electric bicycles in the modern era require useful features to transform transportation into a space for innovation, aiming for energy-efficient, environmentally friendly, and safe riding experiences. This research integrates several features, including the control system for bicycle lighting, hazard warning using a buzzer, PID control for the bicycle motor, and the use of supercapacitors in the battery system. The objective of the research on the bicycle lighting control system is to achieve stable and accurate control of light intensity with an average error rate of 5.887%, a recovery time of 1.032 seconds, and power consumption ranging from 2.784W to 8.664W. The objective of the hazard warning system using a buzzer is to create an automatic warning system based on Mamdani fuzzy logic, where the experimental PWM output matches the PWM output from the fuzzy design inMATLAB. The purpose of the PID control research is to enhance the performance of the bicycle's BLDC motor, aiming to reduce overshoot by 80%, rise time by 50%, and settling time by 50%. The experimental results of the implemented supercapacitor battery system demonstrate a decrease in the maximum voltage output from 42.2V to 35.5V and a reduction in the battery's peak current from 19.1A to 16.9A. Furthermore, the output power exhibits an average decrease from 679.172W to 586.508W. Keywords: PID, Light, Buzzer, Supercapacitor
ANALISIS PENGARUH PENINGKATAN PASOKAN OKSIGEN PADA OPEN CATHODE PEMFC (PROTON EXCHANGE MEMBRANE FUEL CELL) DENGAN MENINGKATKAN KADAR OKSIGEN UNTUK MENCAPAI UNJUK KERJA FUEL CELL YANG OPTIMAL Patrick Commanevendi; Waru Djuriatno; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
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The performance of PEMFC is highly dependent on the level of oxygen supply to the cathode. The diffusion rate of oxygen through the cathode catalyst layer is influenced by factors such as the thickness and porosity of the layer, the oxygen concentration in the gas flow, as well as the temperature and pressure of the fuel cell. The level and quality of oxygen supply to the cathode play a crucial role in the fuel cell's performance. This research will discuss the analysis of the influence of increasing oxygen supply by increasing the oxygen content to the cathode and examine its effects on the performance of the Open Cathode PEMFC. This study utilizes a specialized system to support the measurement and reading of oxygen content values in the air using an oxygen sensor, as well as automation using a solenoid valve from a pure oxygen gas cylinder to achieve optimal oxygen content for the performance of the Open Cathode PEMFC. The research will be conducted by performing several experiments to increase the oxygen content in the vicinity of the fuel cell, which has been provided with a box-shaped space with a constant flow of hydrogen gas pressure into the fuel cell. Then, a hose will fill the space with pure oxygen gas mixed with ambient air from an air compressor to obtain the desired oxygen content value. The pressure of the oxygen gas and ambient air from this compressor is controlled by a solenoid valve. Subsequently, the voltage, current, and power output of the fuel cell will be measured from several experiments of increased oxygen content, which will be read using an oxygen sensor.

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