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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
Search results for , issue "Vol. 11 No. 1 (2023)" : 25 Documents clear
DESAIN KONVERTER CUK PADA METODE PENGEREMAN REGENERATIF EKSITASI MANDIRI PADA MOTOR INDUKSI 3 FASA Ayatullah Farhan; Waru Djuriatno; Rini Nur Hasanah
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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The existence of transportation in Indonesia plays a very important role in facilitating human mobility to move from one place to another. The use of electric vehicles is one of the developments that is currently experiencing a lot of progress, including electric trains (KRL). As the name implies, KRL is sourced from electricity which is supplied to the train system, which is mainly used as a motor drive. When using a motorbike, the important parameter to consider is braking. One type of electric braking that is widelydeveloped is regenerative braking. Self-excitation method regenerative braking using a capacitor is one of the branches of regenerative braking. This type of braking uses motor excitation which will be stored in a capacitor. The resulting regeneration energy will be stored in a battery so that it is not wasted as heat alone, therefore to transfer power a DC-DC converter is needed to adjust the battery voltage. The CUK converter is selected to buck/boost the voltage to match the battery specifications. This research was carried out by simulating using Simulink/MATLAB software which is useful for analyzing the input and output of theconverter and the state of charge (SoC) on the battery. Based on the simulation, it shows that the output of the converter produces a voltage of 13.40 V at a grid frequency of 50 Hz with a SoC increase of 0.006426%. The test was carried out over the grid frequency range of 10-100 Hz which resulted in varying voltage errors and SoC increases.Kata Kunci— Things Three Phase Induction Motor, Regenerative Braking, DC-DC Converter, Capacitor, Frequency, State of Charge (SoC)
GUIDANCE SYSTEM MENGGUNAKAN SEGMENTASI RESNET-50 UNTUK KENDARAAN LISTRIK OTONOM Alfian Fitrayansyah; Waru Djuriatno; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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A thermal camera can function well in various environmental conditions with low visibility and high contrast. Thermal cameras can be used to identify objects through semantic segmentation. The image obtained by the thermal camera on the Autonomous Electric Vehicle (AEV) can be used to segment the location of cars, roads, trees, buildings, etc. at each pixel. Fully Convolutional Network (FCN)-ResNet-50 is one of the ResNet models that can be used to segment roads. The results of the AEV route segmentation are then used to determine the steering direction. The process takes place by utilizing the OpenCV library to determine the Region of Interest (ROI), changing the HueSturation-Value (HSV) value. This process is used to change the road segmentation to white, while the other segmentation will change color to black. Because the white color has a value of 255, andthe black color has a value of 0, it can be calculated and obtained as a comparison of the values of each pixel of the road segmentation image between the right and left sides of the road segmentation image. From the research results, the guidance system through determining the direction of the steering based on the results of road segmentation using the results of deploying the FCN-Resnet-50 model was successfully carried out through several stages, such as determining the Region of Interest (ROI), changing the Hue-Sturation-Value (HSV) value, etc. The error in giving steering recommendations is caused by the FCN-Resnet-50 model used which still has a lot of segmentation faults.Keywords: Autonomous electric vehicles, Guidance System, FCN-Resnet-50, Steering, Semantic Segmentation
TRANSMITTER GELOMBANG FREKUENSI RADIO (RF) FM BERBASIS RASPBERRY PI Bravy Dwika Nanda; Sigit Kusmaryanto; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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In recent years, technology in the telecommunications sector has developed rapidly, especially with the global situation encouraging the use of long-distance communications. One of these developments is the use of the Raspberry Pi, abbreviated as Raspi, as a substitute for conventional computers for receiving and transmitting FM radio signals. Raspberry Pi is a mini and portable computer that can be used as an alternative to conventional computers in general, such as the use of teleconference media, offices, Big Data, and as a video player with high resolution. The problem in using a computer as an FM radio signal transceiver system is its complex and expensive infrastructure. When compared to the Raspberry Pi 3 with a price range of IDR 500,000 - IDR 1,000,000, a transceiver system using conventional computers requires a computer in general at a price far exceeding the said price. Using Raspi makes it easy to transmit FM radio signals by simply coding through the Raspi terminal. In this study, the authors propose a transmitter system using a Raspberry Pi 3B+ which is connected to a dipole antenna at a working frequency of 100 – 101 MHz. Raspi is operated using the SSH protocol for remote desktops. The operating system used is Raspberry Pi OS with the use of a MAC computer (MAC OS) as a remote desktop. The results show that the Raspberry Pi device can be used to transmit FM radio signals at a frequency of 100 - 101 MHz. The dipole antenna tested using VNA (Vector Network Analyzer) with a length of 71 cm and a linear form can transmit a signal with a VSWR of 1.08 - 1.95:1 at a working frequency of 94.9 - 103.06 MHz and a return loss of -28.1 dBm at a frequency of 98.98 MHz.Keywords: Transmitter, FM Radio Signal, Raspberry Pi, Remote desktop, Vector network analyzer
RANCANG BANGUN SISTEM KONTROL SUHU PADA PERANGKAT SMART GREENHOUSE UNTUK TANAMAN PURING DENGAN FUZZY LOGIC METODE MAMDANI Mochammad Habib Anshory; Muhammad Aziz Muslim; Goegoes Dwi Nusantoro
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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When Covid 19 Pandemic, Ornamental plant cultivation is one of favourite sector, thus the farmer of ornamental plant received so many demands cannot fulfil that. Beside of that, there are some kinds of ornamental plant which is hard to be treated. Croton is an ornamental plant which is hard to be treated, but become so famous in Indonesia recently. So a tool that can facilitate the plant is needed to make the plant grown optimally. The research started with designing the smart greenhouse’s design, then designing the hardware and software of the smart greenhouse. After the design is finished, smart greenhouse can be tested with the desired parameter. After it work properly, then carry out the sample data to analyse with the fuzzy logic mamdani method with 28°C as setpoint.Based on the test during the day, System has the output that is able to control the temperature, but it does not match with the setpoint that have been set. Beside of that, system take a long time to reach the steady state condition, which is 45 minutes and 42 seconds. But during the night, system can not work properly because there is no heating actuator in this system Keywords: Temperature, Smart Greenhouse, Fuzzy Logic, Croton
PARTIAL REWINDING COIL PADA GENERATOR UNIT 6 PLTD AMPENAN MENGGUNAKAN STANDAR IEEE Sambodo Rila Priambudi; Teguh Utomo; Mahfudz Shidiq
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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PLTD Ampenan is one of power plant that generated by diesel power that located at Mataram City, West Nusa Tenggara. PLTD Ampenan has 8 units generators with total power 37.5 MW. Unit 6 of PLTD Ampenan is a synchronous generator with 9900 kVA or 8MW capacity. In October 2019 there’s accident in generator unit 6. After the investigation, winding stator found to be damaged that cause top bar coil part to be short-circuited. Action that taken for this problem is partial rewinding coil to the damaged coil. In this study will be known how to do partial rewinding coil and observe the effect to generator unit 6 PLTD Ampenan. By applying IEEE standard for partial rewinding coil, there’s discrepancy standard when testing polarity index at pra comissioning stage.However, by agreement from user, the progress can continue to comissioning stage with notes voltages that given to generator supplied step by step. After completing all stages of partial rewinding coil, generator stated running well. Based on analysis between output data before generator damaged and output data after generator repaired, the value of voltage, frequency, and power factor tend to be the same like generator before damaged. Current that flowing in each phase declared balanced because the value of coil resistance of each phase did not exceed the limit of deviation from it’s average which is ±2%. While on load power has increased after partial rewinding coil with the same excitation supply.Keywords: partial rewinding coil, IEEE standards, generator repair

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