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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
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Articles 23 Documents
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Search results for , issue "Vol. 12 No. 3 (2024)" : 23 Documents clear
PERBAIKAN SUSUT DAYA DAN JATUH TEGANGAN JARINGAN DISTRIBUSI 20KV PADA PENYULANG INTAKO PORONG SIDOARJO Rohman, Deny Fatkhur; Wibawa, Unggul; Utomo, Teguh
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Electrical energy is required for almost all activities in life, including government, industry, business and households. Therefore, it can be said that electricity is the mainstay of human life. People expect the availability of reliable and efficient electrical power for their daily lives. To meet this demand, a reliable and efficient electric power distribution system is required. However, creating a fully reliable and efficient distribution system in the field is really difficult. It can be said that power losses will definitely occur in the distribution system. PT PLN (Persero) as a supplier of electrical energy and the people or organizations that use it will certainly experience losses due to the power losses that occur. One of the most common methods of calculating power losses is to do it manually, but this method takes longer and produces less efficient results. ETAP (Electrical Transient and Analysis Program) is a technology and research advancement that accelerates and simplifies the calculation and simulation of power losses. Solutions that can be provided to reduce losses and voltage drops can be done by setting tap changers on substation transformers and also by increasing the capacity of overload transformers. This research includes the improvement of power losses and voltage drops in the 20 kV distribution system of Intako extension, PT PLN (Persero) ULP Porong. The method used is simulation with data obtained in the ETAP application. Based on the results of the load flow simulation in the existing conditions, there are 8 transformers that experience overload, namely PC415 (108.7%), PC18 (91.3%), PC82 (89.7%), PC122 (89.3%), PC194 (99.2%), PC533 (81.9%), PC589 (137%), PC671 (87%), and there are 3 buses that experience voltage drops that exceed the SPLN standards, while referring to the IEC standards, there are 24 buses that experience voltage drops that do not meet the standards. The total active power losses are 58.8 kW and the total reactive power losses are 285 kVAR. Conditions after adjusting the tap changer on the substation transformer by -2.5 on the primary side can reduce the voltage drop on several buses, but the transformer bus that is overloaded has not met the IEC standard of nominal voltage. Conditions after increasing the capacity of the transformer experiencing overload conditions can reduce the voltage drop value so that all buses meet the IEC standards of nominal voltage. The active power loss value decreased from 58.8 kW to 51.0 kW, and the reactive power loss value decreased from 285 kVAR to 273.2 kVAR. Keywords— Distribution System, Power Loss, Voltage Drop, Tap Changer, Up-Rating Capacity Transformer.
PERANCANGAN GATE DRIVER MOSFET SiC DENGAN TEGANGAN PENGEMUDIAN NEGATIF UNTUK MEREDAM CROSSTALK Putri, Intan Anggraeni Maryanda; Djuriatno, Waru; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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The rapid development of SiC MOSFET technology is due to its advantages over Si MOSFETs. In half-bridge configurations, SiC MOSFETs can cause EMI, ringing, and crosstalk from fast switching, requiring gate drivers to mitigate these issues. Conventional gate drivers (CGD) have limitations. This study assesses the negative voltage transistor-based assist gate driver (NVTAGD) in a half-bridge topology for its effectiveness in reducing crosstalk. NVTAGD reduces voltage overshoot by 21.02 dB and suppresses positive and negative crosstalk by 9.59 dB and 12.19 dB, respectively. Results show no shoot-through and no need for anadditional negative power supply. Although NVTAGD has a higher rise time, it enhances MOSFET reliability by effectively anaging crosstalk without extra control signals. Index Terms— MOSFET SiC, active gate driver, crosstalk, shoot-through, half bridge configuration
IMPLEMENTASI ALGORITMA SENSOR FUSION PADA PEMBACAAN IMU UNTUK MEREDAM GANGGUAN MEKANIS QUADCOPTER Purnomo, Jason Manuel; Djuriatno, Waru; Razak, Angger Abdul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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The balance of unmanned aerial vehicles (UAVs) is crucial to maintain, but there are disturbances from motors and propellers during operation. Additionally, there are unique characteristics of the IMU sensor, namely the sensitive accelerometer and thegyroscope which experiences drift from integration. This research is an analysis of the implementation of the Madgwick filter sensor fusion algorithm (SFA) that combines accelerometer and gyroscope sensor values. The Madgwick filter SFA is implemented on a common IMU, the MPU6050, and an Arduino Nano to test the algorithm on a low-computation microcontroller. Testing showed that the Arduino Nano is capable of computing the Madgwick filter Euler angles at 223 Hz.The parameters of the Madgwick filter SFA are tested by calculating the convergence time of the Madgwick filter SFA output angle with the accelerometer output angle by dropping the sensor on the X-axis. The parameter testing also revealed an output error on the Y-axis due to the Madgwick beta parameter value that amplifies the accelerometer output on the Y-axis. Tests on a quadcopterin hover conditions show that the Madgwick filter SFA output can mitigate disturbances from the harmonic frequencies generated by the quadcopter. Index Terms—Sensor Fusion, Madgwick filter, IMU MPU6050, Quadcopter.
RANCANG BANGUN PROTOTIPE STUN-GUN DENGAN FITUR GPS SEBAGAI ALAT PERLINDUNGAN DIRI Putra, Repson Sandy; Nurussa’adah, n/a; Zainuri, Akhmad
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Crime has become a problem that will always be a threat to the sustainability of human life. Some examples of crimes that often occur are crimes that involve physical contact between the perpetrator and the victim, such as: kidnapping, robbery, extortion, harassment, and rape. Based on the Ministry of Women's Empowerment and Child Protection, data on violence reported until October 2023 contained 23,397 cases, of which 88% of the victims were women and 38.3% were still students. Therefore, a personal protective equipment is needed for victims of these crimes. This study aims to design a stun gun prototype that can send warning messages. The high-voltage generator module is used to produce high-voltage electrical penetration, the GPS module as a receiver module in obtaining location data, the Ngarduino.com platform as a third party in sending messages, and the ESP8266 microcontroller as a data processor and initiator for sending messages. The test results show that the high voltage generator module can produce a voltage of 13.07 kV and a current of 0.53 mA, the GPS module is able to obtain location data in under 3 minutes, the average measurement error is 7.48 meters, the average precision is 1.73 meters and the accuracy is 95.25%, and the prototype successfully sends warning messages and location addresses via the Ngarduino.com platform with a delay of 5 seconds until the message arrives. Overall, this study has succeeded in designing a stun-gun prototype tool that can send warning messages via the WhatsApp application. Keywords— Stun-gun, High Voltage, GPS, Message Sending.
RANCANG BANGUN SISTEM MONITORING PRODUKSI MADU DAN HASIL SAMPING PADA FLOW-HIVE SYSTEM BERBASIS INTERNET OF THINGS Naudy, Ayliefia Ramadhan; Nurussa’adah, n/a; Razak, Angger Abdul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Honey is a non-wood forest product derived from bees, with Indonesian honey production in 2022 reaching 189,780 litersannually, while the demand ranges from 5,000 to 15,000 tons per year based on a per capita consumption of 30 g/year. A primar y issue in conventional beekeeping is the alteration in honey quality due to contamination during post-harvest extraction processes. Beekeepers require an effective and flexible solution to address this problem. The Flow-Hive system, an Australian innovation, utilizes partial split cell technology with artificial combs, significantly differing in yield compared to conventional methods. Annually, conventional honey production yields an estimated net profit of 1,649.08 USD. The integration of IoT technology in the Flow-Hive system enhances monitoring efficiency and reduces bee stress by minimizing human contact. The IoT-based Flow-Hive monitoring system via smartphone includes honey weight measurement using a Load Cell HX711 sensor (up to 5 kg) with an accuracy of 99.8%, and by-product volume measurement using an ultrasonic HC SR04 sensor with an accuracy of 98.71%. The ESP32 microcontroller processes sensor data for display on an LCD and transmits it to the Blynk application, enabling real-time monitoring and data collection with 100% accuracy. Linear regression analysis indicated that honey production reached 3 kg on day 550, and by-product production peaked on day 9, with prediction accuracies of 99.90% and 90.11%, respectively. Keywords: Flow-hive system, Monitoring, Sensor, Honey, and Internet of Things
PENGARUH PERBESARAN JUMLAH ELEKTRODA TERHADAP TEGANGAN TEMBUS PADA DIELEKTRIK UDARA MENGGUNAKAN SUMBER TEGANGAN TINGGI AC Satria, Muchamad Iqbal; Dhofir, Moch.; Nurwati, Tri
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Based on the law of enlargement, the probability value of breakdown voltage in conductor insulation is influenced by changesin the size or number of conductor arrangements. This change affects the insulation application standards that will be appliedto high voltage equipment. This research describes the effect of increasing the number of electrodes on the probability ofbreakdown voltage in air dielectrics using high voltage AC. The research method used is to collect data through testingbreakdown voltage and leakage current at the High Voltage and Applications Laboratory of Brawijaya University, as well assimulating electric field distribution with FEMM 4.2 software. Variations in the electrode arrangement of the rods used are1 pair, 2 pairs, 3 pairs, 4 pairs, and 5 pairs. Breakdown voltage testing was carried out using the Up and Down method in40 trials and analyzed based on the Normal Distribution graph (Gaussian). The results obtained from this research are theinfluence of increasing the number of electrode arrays on the breakdown voltage probability value, where the greater thevalue of increasing the number of electrodes, the greater the breakdown voltage probability value at the same voltage. Thevalue of the leakage current between the electrode arrays increases as the number of arrays applied increases. This causesthe air resistance value between the electrode arrays to decrease as the amount applied increases. Keywords: Breakdown voltage; Leakage current; Probability; Enlargement law; Electric field
DETEKSI BANGUNAN MENGGUNAKAN CONVOLUTIONAL NEURAL NETWORK (CNN) ARSITEKTUR U-NET PADA CITRA SATELIT Firmansyah, Vicky; Mudjirahardjo, Panca; Rahmadwati, n/a
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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This research aims to detect buildings in satellite images using the U-Net architecture CNN model. The dataset is a satellite image of the Araya area, Malang City extracted through Google Earth Engine with the Python programming language, consisting of 4 band channels: Red, Green, Blue, and NIR. The data is processed into 2 types of sizes, namely 128x128 pixels and 64x64 pixels, then divided into train, validation, and test data. Training uses Keras Tensorflow, and testing is done in three stages: model performance testing with layer addition and parameter changes, building detection testing, and comparison of prediction results with manual measurements. The best model was obtained by a model with a training dataset of 128x128 pixels that achieved 93%accuracy with a prediction time of 2 seconds. Keywords— Building Detection, Semantic Segmentation, Convolutional Neural Network (CNN), UNet, Satellite Imagery
ANALISIS PENGARUH PENEMPATAN GPS U-BLOX NEO-6MV2 DALAM MOBIL TERHADAP TINGKAT AKURASI SINYAL GPS Gusmara, Muhammad Daffa; Djuriatno, Waru; Purnomo, Muhammad Fauzan Edy
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Motor vehicle theft is a prevalent issue in Indonesia, with a significant increase in the number of cases in 2023 compared to 2022. To address this problem, the use of GPS Tracker technology can help reduce stolen vehicle losses. However, the effectiveness and accuracy of the GPS Tracker can be affected by its placement in the vehicle. A study aimed to determine the optimal position for the GPS Tracker installation. The study found that the average distance between the GPS Tracker and the receiver in various positions, such as under the driver's dashboard, under the driver's seat, under the front passenger dashboard, under the middle passenger seat, and under the rear seat, were 10.290 meters, 6.106 meters, 9.634 meters, 5.006 meters, 6.522 meters, and 7.141 meters respectively. Based on the analysis, it was concluded that placing the GPS Tracker under the front passenger seat resulted in the highest level of accuracy for receiving data. Keyword: Vehicle, Global Positioning System (GPS), Accuracy, Position.
RANCANG BANGUN SISTEM PENGENDALIAN LINGKUNGAN PADA TANAMAN MICROGREEN BUNGA MATAHARI DENGAN METODE FUZZY LOGIC Abrar, Fachri; Nusantoro, Goegoes Dwi; Maulana, Eka
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Microgreens are plants that require little harvesting time and can be grown indoors. One of the plants that can be grown withmicrogreen is sunflowers. However, growing microgreen sunflowers has problems, namely the growth of mold, and long legs.Some of the factors that affect this are temperature, humidity, and light. Microgreens can be grown indoors, but the indoorconditions are not suitable for the needs of microgreens. The average indoor temperature is 27°C, the air humidity is 80%, and itlacks light supply. Meanwhile, the ideal temperature required by sunflower microgreen is 20-25°C and the ideal humidity is 40-60%. With these conditions, an environmental control system for sunflower microgreen is needed. There are two systems made,namely the temperature and humidity control system with fuzzy logic in controlling the fan speed and the lighting system with LEDlights and lighting for 16 hours. Tests conducted show that the DHT22 sensor used has a temperature accuracy of 99.58% andhumidity accuracy of 99.97%. Testing of the entire system shows that the growth box during the day with the control systeminstalled, can reduce the temperature to an average of 23.16% and humidity of 51.63%. While at night the temperature can reach22.7% and humidity reaches 52.48%. This system can reduce the temperature and humidity to be in accordance with the needs ofmicrogreen sunflowers and fuzzy logic control system can improve the temperature drop to be more stable and close to the setpoint, which is 23°C temperature and 50% humidity. Keywords: microgreen, fuzzy logic, control system, growth box
DESAIN SIMULASI SISTEM KEAMANAN BERBASIS PLC DAN PENGENDALIAN KELEMBAPAN MENGGUNAKAN PID CASCADE PADA COLD STORAGE PASCAPANEN Wibowo, Ellena Widya; Rusli, Moch.; Abidin, Zainul
Jurnal Mahasiswa TEUB Vol. 12 No. 3 (2024)
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Cold storage plays a crucial role in maintaining the freshness and quality of post-harvest products during distribution, which is key to reducing food loss and food waste. In Indonesia, food loss and food waste account for a total of 31% of food production, with economic losses amounting to approximately 550 trillion rupiah per year. One of the main challenges in cold storage is the optimal regulation of temperature and humidity, which can now be addressed with the use of environmentally friendlyhydrocarbon refrigerants. However, the potential hazards of hydrocarbon leakage, such as food contamination by carcinogeniccompounds like benzene, necessitate advanced safety systems. This study proposes the design of a comprehensive simulation system for safety and control in post-harvest cold storage using Schneider Modicon TM221 PLC and Weintek HMI. The humidity control system employs PID cascade to regulate the flow control of the humidifier, with PID tuning using the first Ziegler-Nichols method. This system aims to enhance cooling efficiency while ensuring the quality and safety of stored products. Through comprehensive simulation, this study is expected to provide deep insights into the interaction between control and safety systems and their contribution to reducing food loss and maintaining the quality standards of post-harvest products. Keywords: Cold Storage, Hydrocarbon Refrigerants, PLC, HMI, PID Cascade Control, Humidity Control.

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