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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
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Articles 25 Documents
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Search results for , issue "Vol. 12 No. 2 (2024)" : 25 Documents clear
PENINGKATAN AKURASI SISTEM PEMISAH BARANG OTOMATIS DENGAN METODE CONVOLUTIONAL NEURAL NETWORK PADA PLC SIEMENS S7-300 Angki, Larry; Rusli, Moch.; Siswojo, Bambang
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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The development of an automatic goods sorting system utilizing Convolutional Neural Network (CNN) technology on the SiemensS7-300 PLC is an innovative step to enhance efficiency and accuracy in the process of goods distribution. This system utilizes acamera sensor, Arduino Uno microcontroller, ESP32 microcontroller, Siemens S7-300 PLC, and actuators to classify and separategoods automatically based on their characteristics. An experimental research method with a quantitative approach was used toevaluate the effectiveness of this system. The implementation of Convolutional Neural Network (CNN) in the Siemens S7-300 PLCusing Ladder Diagram as the programming language can improve the separation criteria by considering relevant features of thegoods data. System testing shows that the use of CNN on the PLC can achieve a classification accuracy of up to 99.35% in 25epochs. These results indicate that the integration of CNN in the Siemens S7-300 PLC can enhance the performance of theautomatic goods sorting system, reduce the risk of errors, and improve operational efficiency in modern supply chains. Keywords: Industrial Automation, Siemens S7-300 PLC, Microcontroller, Arduino Uno, ESP32, Convolutional Neural Network,Machine Learning
REDUKSI RIPPLE TORSI MOTOR INDUKSI TIGA FASA DENGAN PENYEDERHANAAN PI-DTC Yahya, Rahulfajri Ash-Shaffan; Djuriatno, Waru; Rusli, Moch.
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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In this study, the authors conducted simulations to simplify the algorithm contained in the SVM so that performance can be improved while maintaining its low complexity. Tests were conducted using simulations on MATLAB/Simulink software. Fromthe test results, it is known that the execution speed of the simplified SVM is 0.3 seconds faster than the conventional SVM. In addition, there is a slight decrease in torque ripple by 6% in the simplified SVM. From the results of all tests, the use of simplified PI-DTC is able to reduce torque ripple and reduce PI-DTC complexity. Keywords: PI-DTC, SVM, torque ripple, complexity, Simulink
PENGARUH PERBESARAN LUAS ELEKTRODA TERHADAP PROBABILITAS TEGANGAN TEMBUS PADA DIELEKTRIK MINYAK MENGGUNAKAN SUMBER TEGANGAN TINGGI AC Latif, Nabila Fauziah; Dhofir, Moch.; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Failure of the insulation system in electrical equipment results in breakdown voltage which can occur in a gas dielectric in theform of air or a liquid dielectric in the form of oil. The breakdown voltage that occurs in transformer oil is due to the presenceof contaminants between the two conductors that bridge the space between the two conductors imperfectly. Transformers havedifferent sizes depending on the maximum power that can be handle. The phenomenon of differences in conductor dimensionsin transformers that have different sizes is likened to electrodes with different cross-sectional area dimensions. The differencein conductor dimensions can affect the distribution of the surrounding electric field which affects the probability of breakdownvoltage. This research will describe the effect of electrode area enlargement on the probability of breakdown voltage in oildielectric using AC (Alternating Current) high voltage source. The research method used is by taking data directly conductedat the High Voltage and Application Laboratory of the Department of Electrical Engineering, Faculty of Engineering, Universitas Brawijaya. Simulation of electric field distribution was carried out using FEMM 4.2 software. The variation of cross-sectional area of the electrode rod arrangement used is A, 2A, 3A, 4A, and 5A. The data taken includes the value of oil conductivity, leakage current, and breakdown voltage. Measurement of oil conductivity using a high voltage insulation tester with output in the form of oil resistance value. Measurement of leakage current value is carried out using a test voltage variation of 2 kV, 4 kV, and 6 kV. The breakdown voltage test was carried out using the Up and Down method in 26 trials and analyzed the probability of breakdown based on the Normal Distribution (Gaussian) graph. The results obtained from this study are the greater the electrode area, the more even/homogeneous the electric field distribution, the greater the leakage current value so that the oil resistance between the electrodes is getting smaller, the larger the electrode area, the smaller the breakdown voltage value and the greater the probability of breakdown. Keywords: Shell Diala oil B, rod electrode, leakage current, probability, breakdown voltage
EVALUASI TEKNIS PADA PENGOPERASIAN PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) KALI JARI DESA GADUNGAN KABUPATEN BLITAR Shidqi, Fahruddin; Utomo, Teguh; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Kurangnya kegiatan perawatan membuat pihak pengelola dan operator kesulitan mengidentifikasi kinerja dari PLTMH Check Dam V Kali Jari. Maka dari itu, perlu dilakukan evaluasi terkait aspek teknis dan kinerja dari PLTMH untuk mengetahui kondisi sesungguhnya saat kondisi berbeban, dan potensi sumber daya air yang ada. Berdasarkan hasil evaluasi, pengukuran debit air yang didapat dengan metode apungan bernilai sebesar 0,4760 m3/s, sedangkan pengukuran tinggi jatuh air (head) denganmetode waterpass, didapatkan hasil Heff sebesar 8,014 meter. Berdasarkan potensi sumber daya air tersebut, potensi daya listrikyang dapat terbangkitkan secara teori sebesar 17,96 kW. Akan tetapi, dengan potensi daya terbangkitkan tersebut, daya terpasang pada PLTMH Check Dam V Kali Jari sebesar 15 kW dan generator terpasang sebesar 8 kW. Penggunaan daya listrik rata-rata tiga fasa PLTMH Check Dam V Kali Jari selama dua hari pengukuran pada pukul (18.00 – 22.00 WIB) sebesar 2.1761 kW untuk daya nyata dan 2.7089 kVA untuk daya semu. Perbandingan daya nyata rata-rata terpakai dan daya generator sebesar 27.0894%, sedangkan perbandingan daya nyata rata-rata terpakai dengan daya terpasang, maka didapatkan perbandingan rata-rata sebesar 14.4477%. Hal ini menunjukkan kurang optimalnya penggunaan daya pada PLTMH Check Dam V Kali Jari. Berdasarkan ketentuan umum yang berlaku pada IMIDAP (Integrated Microhydro Development and Application Program) tahun 2009 oleh Kementerian ESDM, pada beberapa komponen sipil, mekanikal dan elektrikal pada PLTMH Wot Lemah sudah layak namun perlu dilakukan perbaikan pada beberapa komponen terutama pada komponen transmisi mekanik. Kata Kunci: PLTMH, Evaluasi, Metode Apungan, Metode Waterpass, Daya Nyata, IMIDAP.
ANALISIS DESAIN PEMBANGUNAN PLTS TERAPUNG DI DANAU TOBA: STUDI PADA ASPEK TEKNIK, EKONOMI, DAN LINGKUNGAN Nainggolan, William Sutan; Wibawa, Unggul; Wijono, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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High level of solar radiation throughout the year makes solar photovoltaic systems (PV) as one of the options for clean energysources in Indonesia. Indonesia possesses significant potential for utilizing floating solar plants, given its 3.091 water resources. Lake Toba, situated in the North Sumatra province, stands as Indonesia's largest lake, covering an expansive area of 1.145 km2. With solar irradiation levels reaching 1757,1 kWh/m2/yr, the lake presents promising potential as a suitable location for floating solar plant installations. The study focused on the technical design of floating solar power plants, covering electrical components and civil structures like floaters, anchors, and moorings. Two scenarios were analyzed to determine plant capacity: maximum water surface area and peak load data of North Sumatra. Inverter capacity was restricted by a ratio of 1,15 to 1,25. Graphical simulations using Matlab software were conducted to assess PV module generation characteristics at various solar radiation levels. Economic analysis included Cost of Energy, Net Present Value, Profitability Index, and Payback Period over a 30-year project lifetime. Environmental analysis addressed GHG emissions reduction assuming a 1% yearly power depreciation. This study outlines the technical design for the Lake Toba floating solar plant with a capacity of 583 MWp covering 3,57 km2 water surface. The plant uses 988.080 PV modules 590 Wp and 48 inverters 10.000 kW, mounted on HDPE floaters with a taut mooring system. Estimated energy production stands at 854 GWh/year. Economic analysis reveals a positive NPV of Rp 5.8 trillion, PI exceeding 1 at 1.774, and a Payback Period of 9 years and 9 months, demonstrating the feasibility of constructing the 583 MW Lake Toba Floating Solar Plant. Environmental analysis indicates a reduction in GHG emissions on Sumatra Island by 18.68 kilotons of CO2 over the project's lifetime. Keywords: floating solar plant, renewable energy, economic analysis, environment analysis, Lake Toba
PENGARUH PENAMBAHAN FENOL TERHADAP TEGANGAN TEMBUS AC PADA MINYAK JARAK (CASTOR OIL) SEBAGAI ALTERNATIF BAHAN ISOLASI CAIR Handoyono, Tito Tri; Dhofir, Moch.; Hasanah, Rini Nur
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Mineral oil-based transformer insulation has several problems, namely that it is not environmentally friendly, cannot be decomposed, cannot be renewed and its availability is decreasing. Vegetable oils are an alternative to transformer insulation, one of which is castor oil. This research aims to describe castor oil as an alternative to mineral oil for transformer insulation materials based on SPLN 49 of 1982. This research was carried out using samples of pure castor oil and castor oil with phenol additives of 1.25%, 2.5%, 3.75%. Water content testing is carried out using the heating method with the aim of reducing the water content in pure castor oil. Heating was carried out at 70ºC for 60 minutes. Breakdown voltage testing is carried out to determine thedielectric strength of castor oil. Based on the minimum requirements of SPLN 49 of 1982, the breakdown voltage is >30 kV. Permittivity and conductivity tests were also carried out on castor oil. The relative permittivity value must meet the specified requirements. The permittivity value for pure castor oil is 12.59 F/m, for castor oil with 3.75% phenol additive it is 12.77 F/m. The conductivity value of pure castor oil is 93.66 × 10^(-9)S/m, while the conductivity value of castor oil with 3.75% phenol as an additive is 3.73 × 10^(-9) S/m. Assay Pure castor oil water uses the gravimetric method and shows that the water content before heating is 3300 ppm, then heating treatment can reduce the water content by 33.06 ppm or 1%. Testing the breakdown voltage of pure castor oil which did not go through a heating process was 30.65 kV, while the breakdown voltage value of pure castor oil which was heated was 36.67 kV, this heating increased by 18.63%. The highest breakdown voltage value for castor oil with 3.75% phenol additive was 46.05 kV at room temperature, while the highest breakdown voltage value for castor oil with 3.75% phenol additive was 58.97 at a heating temperature of 70ºC for 60 minutes. Keyword: heating, Castor oil. Water content, phneol, breakdown voltage
ANALISIS ARUS BOCOR ISOLATOR PADA JTM DI PLN ULP MOJOSARI DALAM KONDISI KERING DAN BASAH Ramadhan, Muhammad Dicky; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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This research discusses about the leakage current analysis of polluted ceramic disk insulators at PLN ULP Mojosari. So that conditions in the laboratory are the same as in the field, leakage current testing is carried out in dry and wet conditions, with variations in wet conditions using rainfall of 25.49 mm, 45.79 mm, and 96.37 mm to simulate rainfall in Indonesia, according to data from BMKG. In this research, a polluted plate insulator consisting of 2 disk insulators is used according to conditions in the field. The test voltage variations used range from 11 kV to 24 kV. From the test results it was found that pollutants on the insulator and rainfall had an effect on the leakage current value, because from the results of testing the pollutant content it was found that the pollutants present were metal and semiconductor which could reduce the insulating ability of the insulator if theseelements stuck to the surface of the insulator . In XRF testing, pollutant elements that are difficult to dissolve in water were found, namely Ti (Titanium) at 1.29%, V (Vanadium) at 0.04%, Cr (Chrome) at 5.97%, Mn (Manganese) at 7.14 %, Fe (Iron) at 11.2%, and Ni (Nickel) at 7.10%. Meanwhile, in the XRF-H method, the element Ti (Titanium) was 1.8%, V (Vanadium) was 0.30%, Cr (Chrome) was 14.4% and Mn (Manganese) was 36.1%. In testing pollutant insulators with a voltage of 20 kV in dry conditions, the leakage current value was 136.43 µA. Then, in testing wet conditions with artificial rainfall of 25.49 mm, 45.79 mm, and 96.37 mm, leakagecurrent values were obtained at 142 µA, 214.83 µA, and 290.63 µA, respectively. In this research, it was found that the greater the artificial rainfall and the test voltage provided, the greater the value of the leakage current flowing through the pollutant insulator. Leakage current flowing on the surface of polluted insulators will also cause electrical power losses and electrical energy losses. The energy loss values obtained at a test voltage of 20 kV are 23.90 kWh for dry conditions, 24,88 kWh for 25,49 mm rainfall, 37,64 kWh for 45,79 mm rainfall, and 50.92 kWh for dr 96.37 mm rainfall. Keyword: Leakage Current, Disk Insulator, Pollutant, Wet, Dry
RANCANG BANGUN SISTEM MONITORING DAN PENGATURAN PADA SISTEM HOME REVERSE OSMOSIS DISPENSER BERBASIS INTERNET OF THINGS Ricardo, Aldo; Abidin, Zainul; Zainuri, Akhmad
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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The availability of safe, clean water is a global priority, especially with the Sustainable Development Goals (SDGs) for 2030.However, data indicates that Indonesia still faces obstacles in meeting these goals, with most households experiencing limitedaccess to quality drinking water. This is an urgency because poor water quality can cause serious illnesses such as diarrhea which contributes to a high number of deaths each year, so assessing water quality is crucial, considering criteria such as pH, TDS, bacteria, and other physical factors. Therefore, monitoring and managing the Home Reverse Osmosis Dispenser system based on the Internet of Things (IoT) is an effective solution in monitoring water quality in real-time. The system monitors pH, TDS, temperature, and water level, with automatic controls to ensure water safety. Integration with UV water sterilizers aims to improve water quality by killing pathogenic microorganisms. Test results show the effectiveness of the system in generating accurate data, with low measurement differences between sensor readings and digital standardized comparison tools. The measurement accuracy rate for the pH sensor is 97.81%, for the TDS sensor is 96.76%, the temperature sensor is 98.9%, and the water level sensor 98.9%. The performance of each sensor produces the measurement value of each parameter very well. The addition of the water flow speed measurement feature and the calculation of the amount of water usage using the flow sensor also showed a high level of accuracy, namely 98.83% for measuring the speed of water flow and 97.69% for calculating the amount of water usage. Therefore, this system is expected to be an appropriate solution in increasing the availability of safe drinking water in urban areas in Indonesia in accordance with the SDGs. Keyword: Reverse Osmosis, drink water, Internet of Things
PERANCANGAN SISTEM KONTROL MEJA KERJA PADA MESIN POTONG DENGAN MIKROKONTROLER ARDUINO BERBASIS PID Rafiansyah, Ibnu Ghani; Rusli, Moch.; Siswojo, Bambang
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Seiring berkembangnya zaman, kebutuhan akan teknologi menjadi semakin kompleks. Permintaan akan teknologi terutama kebutuhan akan adanya alat otomatis sekala kecil untuk menunjang kebutuhan industri rumahan yang membutuhkan alat otomatis dengan desain sederhana dan praktis dalam penggunaan maupun pengoprasian alat tersebut. Dalam dunia industri rumahan dibutuhkan alat pemotong kayu, bertolak dari alat yang sudah ada saat ini dalam industri meubel sekala rumahan, masih menggunakan alat konvensional dalam pengoperasiaanya, adapun alat otomatis yang sedikit moderen masyarakat sering menyebut dengan istilah mesin potong kayu, yang sudah menggunakan motor DC dalam pengoperasiaanya, mesin potong ini masih memiliki banyak kekurangan mengenai kepresisiannya, dalam pengerjaanya masih terbatas. Belakangan ini mesin potong kayu semakin popoler, keberadaan alat ini sangat memudahkan tukang kayu pada saat memotong kayu. Pada motor DC dilakukan tuning dengan hasil parameter Kp=6,209 Ki=0,395 dan Kd=4,65, dengan rise time 1,75 detik, overshoot 0,95%, settling time 3 detik. Kata Kunci— Meja Kerja, Motor DC, PID.
RANCANG BANGUN SISTEM PENGENDALI SUHU, pH AIR DAN NUTRISI MENGGUNAKAN METODE FUZZY MAMDANI PADA TANAMAN HIDROPONIK PAKCOY Bahtiar, Zuhrinada Alvin; Nurussa’adah, n/a; Nusantoro, Goegoes Dwi
Jurnal Mahasiswa TEUB Vol. 12 No. 2 (2024)
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Hydroponics is a cultivation system for plants that does not involve soil as a growing medium but rather utilizes alternative substrates such as perlite, vermiculite, gravel, sand, rice husks, and cocopeat, along with nutrient-rich water containing sufficient oxygen. One advantage of hydroponic techniques over soil-based agriculture is the relatively easier identification and monitoring of nutrient conditions. Unlike soil-based farming, which presents challenges in identifying soil types and their nutrient content, hydroponics offers a more straightforward approach. In the hydroponic cultivation of pakcoy, water quality stands as the primary parameter. To achieve optimal results, water conditions must maintain suitable temperatures, pH levels, and nutrient concentrations under the requirements for pakcoy growth. Designing a control system using the Mamdani fuzzy method will be implemented to regulate temperature, water pH, and nutrient concentration according to growth requirements to maintain water quality in pakcoy hydroponics. From the research findings, the device is capable of controlling water temperature in the hydroponic reservoir according to the desired setpoint membership function, ranging from 15°C to 30°C, with an average steady-state error of 2.16%. The device can regulate water pH according to the setpoint range of pH 5-7, with an average steady-state error of 2.6%. For nutrient concentration control, the device achieves the setpoint range of 1000-1200 ppm, with an average steady-state error of 1.15%. This study demonstrates that the Mamdani fuzzy logic-based control system for temperature, water pH, and nutrient concentration can enhance the growth of pakcoy hydroponics plants. Keywords: Hydroponics, Pakcoy, Water pH, Temperature, Nutrition, Fuzzy logic Mamdani

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