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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
Education
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Articles 2,116 Documents
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ANALISA RUGI-RUGI DAYA DISTRIBUSI DI PEMBANGKIT LISTRIK TENAGA MIKROHIDRO DESA ANDUNGBIRU KECAMATAN TIRIS PROBOLINGGO Brilian Mukti Alnajib; Mahfudz Shidiq; Lunde Ardhenta
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Micro hydro power plants (PLTMH) have the potential as an alternative source of electrical energy, especially in rural areas or remote areas that have abundant air potential. However, the PLTMH also has a problem, namely the electric power which produces a small connection with the distance of the generator is far from the point of load so that problems such as power lossand voltage drop arise so that it is necessary to do a power loss analysis to find out the condition of the power loss and voltage drop to increase the reliability of the system by This research was conducted at the Andungbiru Village PLTMH, Tiris District, Probolinggo. With power loss analysis using the Newton Raphson method, using Matlab software to obtain a large channelpower loss value and efficiency using the Newton Raphson method with an R phase of 918.21 Watt with an efficiency of 61.54%. The S phase is 1098.40 Watt with an efficiency of 55.76%. Phase T is 1073.5 Watt, with an efficiency of 57.14%. Then do a load simulation using the Etap software for the Probolinggo PLTMH, get the value of the power loss and efficiency of the R, S, T phases before being installed. The purchase is the R phase with a loss of 702.94 watts and an efficiency of 70.556%, for the S phase with a loss of 819.90 watts and an efficiency of 67.034%, for phase T with a power loss value of 756.98 and an efficiency of 69.78% after that we simulated adding bank purchases to the PLTMH and getting the most optimal bank placement at the end of the channel, namely for phase R on the bus 6 R with a power loss of 616.13 watts with an efficiency of 74.192%, then phase S is located on the 5S bus with a loss value of 748.08 Watts and an efficiency of 69.923%. Then the T phase is located on the 5 T bus with a power loss of 680.27 Watt and an efficiency of 72.848%. Keywords: PLTMH, Newton-Raphson, efficiency, loss, power
PENGARUH LAPISAN HIDROFOBIK PADA PERMUKAAN ISOLATOR POLIETILEN BERBENTUK SIRIP TERHADAP TINGKAT ARUS BOCOR DAN TEGANGAN FLASHOVER DALAM KONDISI BASAH DAN KERING Faisal Shidqi; Moch. Dhofir; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

This study describes the effect of the hydrophobic coating on the surface of the fin-shaped insulator on the level of leakage current and flashover voltage. The research method used to collect data on leakage current and contact angle directly at the High Voltage Engineering Laboratory of the University of Brawijaya, with the experiment voltage varying between 2 kV, 4 kV, 6 kV, 8 kV, 10 kV, 12 kV, and 14 kV. The experiment begins with determining the value of each insulator, specifically before and after the hydrophobic coating, tested in dry and wet conditions with wetting discharge variations of 10, 30, and 60 mL/s, which corresponds to the trend of rainfall in Indonesia. The study's findings include knowing the level of leakage current in each insulator, particularly when comparing dry conditions and the presence of wet conditions with an increase in wetting discharge so that the surface resistance and power loss caused by the insulator are known. According to the study's findings, the addition of coating reduces leakage current, and the greater the addition of the number of fins, the lower the level of leakage current. Furthermore, the leakage current is affected by the wetting discharge, with the increase in the insulator's level leakage current being directly proportional to the addition of wetting discharge. Keywords — polyethylene isolator, corner contact, hydrophobic, flashover, leakage current, wet and dry conditions
PERANCANGAN SISTEM KONTROL ASAP ROKOK PADA RUANG MEROKOK MENGGUNAKAN METODE FUZZY Muchammad Zufar Badubah; Mochammad Rusli; Erni Yudaningtyas
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Cigarettes are a mixture of tobacco, cloves and other ingredients wrapped in paper. The content of substances in cigarettes consists of nicotine, carbon monoxide (CO), tar which are carcinogenic and free radicals, such as nitric oxide radicals and so on. However, this application is limited only by measuring gases which are considered to represent the overall content of cigarette smoke. The gas is Hydrogen and Ethanol. In this study smoke and CO gas levels will be used as input to the control system, the output is in the form of a pwm duty cycle. The input value will be processed by fuzzification, the fuzzy set value will be matched with the rule value used, then it will be the output value after going through the defuzzification process. Fuzzy Logic Controller to get the PWM value from the relay which will be used to adjust the exhaust fan rotating speed. The test results show that fuzzy logic can provide a rule based on the existing smoke sensor in the smoke detector. Based on the test results obtained, that fuzzy logic can be implemented as a rule maker in the detection tool as soon as possible. So it can be concluded that the detection tool as soon as possible can carry out their respective tasks properly. Keywords : cigarette smoke control system, fuzzy method, nicotine, carbon monoxide
PENGENDALI ALIRAN GAS HIDROGEN PADA MASUKAN DAN KELUARAN PROTON EXCHANGE MEMBRANE FUEL CELL DENGAN BEBAN DINAMIS Muhammad Faqih Alfalah; Waru Djuriatno; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Fuel cells are a source of environmentally friendly energy materials because they use hydrogen gas as their main ingredient. Fuel cells themselves have various types and this research uses a type of Proton Exchange Membrane Fuel Cell which uses polymer materials as its main component to produce electrical energy. The purpose of this study is to control the flow of hydrogen gas into the fuel cell to determine the flow and volume of the hydrogen gas used and to see the output of the fuel cell in the form of voltage, load voltage and current which will later be known for the efficiency and power of the fuel cell. . This test was carried outby designing a test circuit to regulate hydrogen gas by controlling the use of valves and flow sensors controlled by Arduino Uno by looking at two different conditions, namely condition 1 (maximum hydrogen gas pressure (1.5 bar)) and condition 2 (stable hydrogen gas (1.1 – 1.3 bar)). In this test, the voltage, load voltage, volume, flow and current are recorded. Based on the test results in condition 1, the value of voltage, volume and flow is higher than condition 2 and for load voltage, the more load used, the lower the value, while the more load used, the higher the value. Based on the results of the tests that have been carried out,the calculations were carried out and it was concluded that the power is directly proportional to the load used and the fuel cell has an efficiency of 58-60%. Keywords: Fuel Cell, PEMFC, Hydrogen Gas, pressure condition, voltage
RANCANG BANGUN PROTOTYPE SISTEM OTOMATISASI PENGATURAN AIR TANDON BERBASIS LORA DI PERUMAHAN GIRI PALMA Muhammad Keanoudjie; Ponco Siwindarto; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Efisiensi energi merupakan fokus utama dalam menghadapi perubahan iklim dan keberlanjutan lingkungan. Salah satu cara untuk mencapai efisiensi energi adalah dengan meningkatkan pengaturan air yang seringkali menjadi sumber pemborosan energi listrik. Penelitian ini berfokus pada sistem pengaturan air tandon di Perumahan Giri Palma. Sistem saat ini menggunakan pengaturan manual yang rentan terhadap kelalaian dan ketidaktepatan waktu operator, menyebabkan pemborosan energi listrik dan gangguan pada suplai air. Untuk mengatasi masalah ini, penulis merancang sebuah proyek prototype sistem otomatisasi pengaturan air tandon berbasis LoRa. Tujuan penelitian ini adalah menyajikan solusi untuk merancang sistem otomatisasi pengaturan air tandon berbasis LoRa dan mengevaluasi keefektifannya. Penggunaan mikrokontroler sebagai pengatur kerja komponen otomatisasi pada setiap tandon, serta teknologi LoRa sebagai pendukung komunikasi jarak jauh antar node digunakan dalam penelitian ini. Sensor ketersediaan air sumur dan sensor ketinggian air tandon ditempatkan untuk mengontrol kerja pompa. Setelah dilakukan implementasi dan pengujian, hasil penelitian menunjukkan bahwa prototype sistem otomatisasi mampu mengisi tandon dengan baik sesuai dengan spesifikasi yang ditetapkan. Hal ini menunjukkan bahwa sistem otomatisasi pengaturan air tandon berbasis LoRa dapat menjadi solusi efisien dalam penghematan energi listrik dan penyediaan air yang stabil di Perumahan Giri Palma. Kata kunci— Efisiensi energi, pengaturan air tandon, LoRa, mikrokontroler, sensor, otomatisasi.
PENGARUH BENDING ORIENTASI SUMBU X DAN SUMBU Y TERHADAP KINERJA ANTENA MIKROSTRIP PATCH BINTANG 27 Fauztino Hafiz Ar Royyan; Muhammad Fauzan Edy Purnomo; Dwi Fadila Kurniawan
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Microstrip antenna is a type of antenna that has several advantages, namely having a small size and weight, easy and cheap to implement, being able to operate on single, dual or multi bands, can produce circular and linear polarization. However, there are several disadvantages of microstrip antennas, namely that they are easy to deform due to pressure and temperature from outside or from the antenna itself, causing the antenna to bend or bend which results in decreased antenna performance due to worse antenna parameters. This study analyzes the effect of bending the orientation of the xaxis and y-axis on the performance of the 27 star microstrip patch antenna. The design of the 27 star-shaped microstrip antenna with a copper conductor. The analysis was carried out using two methods, namely simulation using the CST Studio Suite 2021 application and antenna measurements using a vector network analyzer. The study used is analytical in nature which refers to the results of simulations and real measurements. The objectives to be achieved in writing this research are to design a 27 star microstrip antenna and analyze the effect of bend on antenna performance. The methods used in this research are: literature study, antenna design, antenna measurement, analysis of simulation results and antenna measurement results, as well as drawing conclusions and suggestions. The measurement and simulation results show that bending affects the quality of the antenna resulting in a change in the parameter results, this occurs due to a decrease in performance due to changes in the shape of the antenna which are different compared to the flat state, so that the parameter results have worse values than before Keywords: Microstrip antenna, X-axis bending, Y-axis bending, CST Studio Suite, ARINST VNA
EKSTRAKSI CIRI BERDASARKAN KARAKTERISTIK DINAMIS SINYAL MULTISENSOR MENGGUNAKAN LINEAR DISCRIMINANT ANALYSIS Reinato Teguh Santoso; Adharul Muttaqin; Panca Mudjirahardjo
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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This research was conducted to develop a feature extraction system based on the dynamic characteristics of multisensor output data. The Quartz Crystal Microbalance (QCM) sensor was utilized as one type of multisensor that responds to changes in oscillation frequency for gas detection. The data used in this study were measurements of 6 types of mint species using the QCM sensor, taken at the Botanical Institute of Karlsruhe Institute of Technology (KIT) in Germany. The data underwent preprocessing to enhance the system's efficiency, followed by feature extraction using the Linear Discriminant Analysis (LDA) method. The feature extraction testing involved various data variations, resulting in a 58.33% reduction in the number of features from 12 to 5. Subsequently, classification testing was performed using three types of classifier models: k-Nearest Neighbors (k-NN), Support Vector Machine (SVM), and Decision Tree (DT). Four data variations were used for classification, which included frequency response data before and after LDA, as well as dynamic characteristic data extracted using Piecewise Linear Regression (PLR) before and after LDA. For the k-NN classification, the accuracies obtained were 96.05%, 98.40%, 93.75%, and 95% for each of the four data variations, with computation times of 0.402 s, 0.208 s, 0.027 s, and 0.023 s, respectively. For SVM classification, the accuracies obtained were 52.25%, 94.94%, 75.21%, and 87.92% for the four data variations, with computation times of 38.93 s, 3.749 s, 0.695 s, and 0.168 s, respectively. Lastly, for DT classification, the accuracies obtained were 97.95%, 96.09%, 86.25%, and 92.08% for the four data variations, with computation times of 0.647 s, 0.236 s, 0.066 s, and 0.023 s, respectively. Keywords: Quartz Crystal Microbalance, Feature Extraction, Linear Discriminant Analysis
ANALISIS EFISIENSI PENGUNAAN KAPASITOR BANK TERHADAP PERBAIKAN FAKTOR DAYA DAN JATUH TEGANGAN PADA HOTEL GRAND DAFAM YOGYAKARTA Lukman Darmawan; Moch. Dhofir; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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This research discusses about analysis of the use of capacitor banks for power factor improvement and voltage drop at Grand Dafam Hotel Yogyakarta. For simulation of analysis, researchers used a software called ETAP, Based on the Analysis, The reactive power required at the Grand Dafam Yogyakarta Hotel to improve the power factor to 0.96 is 478.513 kVAR under maximum loadconditions, while on February 24, 2023 it only requires reactive power of 291.92 kVAR. The use of capacitor banks can reduce voltage losses by 1-3% from before the capacitor bank. because the higher the power factor results in a smaller current so that voltage losses will decrease. The total cost of the Grand Dafam Yogyakarta Hotel electricity bill for 1 month before installing the capacitor bank is estimated at Rp35,710,845,732, while after installing the capacitor bank the electricity bill is Rp26,032,673,052 This is because there is no kVARH penalty that has been set according to PLN rules. Keywords : Capacitor Bank, Power Factor, Voltage Drop, Current, Power Loss, Economic Analysis, ETAP
IDENTIFIKASI AROMA MINT BERDASARKAN FREKUENSI SINYAL SENSOR PIEZOELEKTRIK 12 CHANNEL MENGGUNAKAN CONVOLUTIONAL NEURAL NETWORK (CNN) Cahaya Trinala Kinanti; Adharul Muttaqin; Muhammad Aziz Muslim
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

This research aims to identify mint aroma based on multisensor signal frequency using CNN-1D model. The data collected by Solih Okur at Botanical Institute of Karlsruhe Institute of Technology (KIT), Germany. There are 6 types of mint aroma and the frequency signal data is taken using piezoelectric sensors with 12 types of QCM sensors using various layering materials The data that has been obtained then goes through a pre-processing stage to remove outliers and then followed by dividing the data into training data, validation data, and test data. The training process was conducted using the Keras Tensorflow framework with a CNN-1D architecture model. There are 3 stages of testing performed, testing system modeling performance by changing architecture and parameters, testing system identification performance, and testing the system using noise data. The model with the best results was obtained with accuracy up to 98% with prediction time 2s. This finding shows that scent identification technology using multisensor and CNN-1D can identify mint aroma effectively and efficiently. Keywords: Multisensor, Convolutional Neural Network (CNN), CNN-1D, Scent Identification, Signal Identification.
DISKRITISASI KONTROLER PI PADA PULSE WIDTH MODULATION (PWM) RECTIFIER TIGA FASA Gasa Gradianto; Tri Nurwati; Bambang Siswojo
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Abstract

Rectifiers are increasingly being used in various applications such as power supplies for microelectronics, household electrical equipment, battery charging, power conversion in high-voltage direct current (HVDC) transmission systems, and so on. Conventional rectifiers typically use diodes, which are uncontrolled rectifiers that have a disadvantage of producing inflexible output voltage since the output voltage cannot be regulated. Therefore, there is a need for controlled rectifiers, namely three-phase PWM rectifiers, which convert AC voltage into DC voltage with higher output voltage than the input voltage, and the output voltage can be adjusted according to specific requirements. This research discusses the comparison of PI controller design in the sdomain and z-domain with pulse width modulation (PWM) three-phase rectifier as the plant to be controlled.

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