Jurnal Ilmiah Teknik Elektro
Jetri is a scientific journal aims to publish high quality and up to date articles in electrical engineering field. Its scope includes (but not limited to): - Power Systems: nonrenewable and renewable energy power generation, power transmission and distribution, power conversion, protection system, electrical material, power system analysis, etc. - Telecommunications: modulation and signal processing for telecommunication, antenna and wave propagation, wireless and mobile communications, radar, satellite, communication network and systems, etc. - Control Systems: optimal controls, adaptive controls, non linear and stochastic controls, modeling and simulation, robotics, optimization, intelligent systems, fuzzy logic, etc. - Electronics: electronic materials, electronics system, microelectronic devices and system, VLSI, ASIC, system-on-a-chip (SoC), electronic instrumentations, medical electronics and instrumentation, etc. Computer Systems/Informatics: computer architecture, parallel processing, computer network, embedded system, human-computer interaction, virtual reality, computer security, machine learning and data mining, software
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<![CDATA[ANALISA JATUH TEGANGAN PADA MASS RAPID TRANSIT (MRT) JAKARTA ANALISA JATUH TEGANGAN PADA MASS RAPID TRANSIT (MRT) JAKARTA ]]>
<![CDATA[Rizka Shafira]]>;
<![CDATA[Chairul Gagarin Irianto]]>;
<![CDATA[Ishak Kasim]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.8952
<![CDATA[Salah satu permaslahan di Mass Rapid Transit (MRT) Jakarta karena terjadinya penurunan tegangan pada saluran catu daya yang dapat menyebabkan penurunan kecepatan kereta, gangguan kualitas daya dan kerusakan peralatan listrik. Tujuan dari penelitian ini adalah untuk meneliti seberapa besar terjadinya jatuh tegangan dan mendapatkan jarak optimal gardu traksi MRT Jakarta. Pada penelitian menggunakan metode perhitungan jatuh tegangan yang terjadi pada MRT. Hasil dari penelitian ini didapatkan jatuh tegangan tertinggi berada pada gardu traksi antara Cipete Raya – Sisingamangaraja yaitu 202,3 VDC atau 13,5% dan untuk penempatan jarak gardu traksi ideal adalah ±2 km dengan tegangan jatuh maksimal 92,5 VDC atau 6,2% dari batas maksimum jatuh tegangan sebesar 10% yang telah di tetapkan oleh Standar Perusahan Listrik Negara (SPLN 1:1995).]]>
<![CDATA[Portable Solar Charger System with Energy Measurement and Access Control ]]>
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Angga Febian]]>;
<![CDATA[Antonius Suhartono]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.13084
<![CDATA[The utilization of green energy is one trending issue in the current time. People try to increase the portion of energy gained from renewable sources such as wind, solar, hydro, and geothermal energy. In this paper, the authors propose a portable solar charger system (PSCS) that can be used to charge cellular devices when electricity access is not available such as during a power shutdown or when traveling to remote locations. The PSCS is made compact in two parts: the solar panel and the utility box, making the whole system easy to carry. The energy obtained from the solar panel is stored in a dry battery, with the process carefully regulated by a solar charge controller. The PSCS is equipped with passcode protection and gained energy monitor. The electric current from the battery flows to the load through a DC-DC converter and a relay only if a correct passcode is entered via a keypad. The amount of gained energy by the solar panel is monitored by measuring the voltage across the panel and the current flowing through its circuit. The functionality of the PSCS is successfully tested. Eight experiments each with a 3-hour duration are conducted on 6 different days. The amount of gained energy varies from 5.26 Wh to 9.88 Wh (1,300 mAh to 2,670 mAh), which corresponds to 14.5 % and 31.5 % of the potential average daily output energy for the location of Cikarang, Indonesia.]]>
<![CDATA[Penentuan Konstanta PID Sistem Kendali Satelit Sumbu X, Y, dan Z Menggunakan Metode Root Locus ]]>
<![CDATA[Muhammad Bahtiar]]>;
<![CDATA[Mohammad Aji Saputra]]>;
<![CDATA[Aditya Dwi Airlangga]]>;
<![CDATA[Suraduita Mupasanta]]>;
<![CDATA[Muhammad Mujirudin]]>;
<![CDATA[Harry Ramza]]>;
<![CDATA[Latifah Sarah Supian]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.13473
<![CDATA[The sattelite controller can be carried out according to the orbit direction of the x, y and z axes. This control functions by determining the value of the PID constant (Proportional, Integral and Differential) through the Root Locus Method. The purpose of this study is to determine the parameters are needed by PID in controlling the LAPAN A2 Satellite using this Root Locus method. The result of P – constant on the x-axis is 31.7692, the y-axis is 38.4987 and the z-axis is 30.6559. The I – constant generated on the x-axis is 5, the y-axis is 5 and the z-axis is 5. Likewise, the D – constant generated on the x-axis is 47.2755, the y-axis is 70.2532 and the z-axis is 43.9196. All the constant values mentioned are determined based on the lowest steady state error number of 0.12% for the x-axis, 0.10% for the y-axis and 0.12% for the z-axis. The overall value is the optimum system value where the steady state error value is generated from the difference between the settling time value and the steady state value multiplied by 100% with a tolerance limit of <5%.]]>
<![CDATA[ANALISIS LAJU PENUAAN ISOLASI KERTAS MENGGUNAKAN ESTER BASED OIL PADA TRANSFORMATOR RAMAH LINGKUNGAN ]]>
<![CDATA[Agung Sukma Hardana]]>;
<![CDATA[Syamsir Abduh]]>;
<![CDATA[Tyas Kartika Sari]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.13665
<![CDATA[Transformer oil function as the cooling medium and electrical insulation component in power transformer. It has to follow minimum acceptable criteria as regulated in international standard, as IEC standard. In general, the most transformer oil used in power transformer is mineral oil. Due to the sustainability of the raw material and the bad impact to the environment, it is important to find the new transformer oil as alternative to the mineral oil. The intention of this reseeach is to study the characteristic of the ester based oil: breakdown voltage, tangen delta and color. Analyis was performed by comparing the characteristic from both oils, and reviewed the parameters against the minimum criteria as required by IEC standard. Based on the analysis, ester based oil fulfill criteria and can be used for the transformer oil. Furthermore, based on the degree polymerization test result from the paper insulation immersed in both oils, it can be concluded that the insulation paper immersed in ester based oil has slower aging rate than insulation paper immersed in mineral oil.]]>
<![CDATA[SISTEM MONITORING EFEKTIVITAS KINERJA PANEL SURYA DENGAN PENAMBAHAN REFLEKTOR BERBASIS MIKROKONTROLER ]]>
<![CDATA[Tania Astari Trisnandini]]>;
<![CDATA[Nurhedhi Desryanto]]>;
<![CDATA[ismail kgs]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.13797
<![CDATA[Utilization of Solar Panels as a fulfillment of electrical energy needs is very important, considering the conventional power sources currently used are very limited, which does not rule out the possibility of scarcity in the future. For this reason, a solar panel development was made with the addition of a flat mirror reflector in order to increase the effectiveness of performance. besides the implementation of the development of microcontroller technology as a monitoring system, so that the data obtained can be done automatically, continuously and stored. In this design, it uses current and voltage sensor which will be processed by the microcontroller with data results in the form of current, voltage and power values as well as time information for the resulting data. The data that shows the effectiveness of the performance of solar panels in this study is to compare the power generated by solar panels between solar panels without reflectors, solar panels with additional reflectors with installation angles of 450 and 750, so that it is known that the greatest efficiency value is in the performance of solar panels with additional reflectors installation angle of 750 is 1.06%.]]>
<![CDATA[Pengembangan Wearable Device untuk Monitoring dan Tracking Pasien Isoman Covid-19 Berbasis Mobile ]]>
<![CDATA[Dina Angela]]>;
<![CDATA[Hans Melkisedek Simanjuntak]]>;
<![CDATA[Hanif Fakhrurroja]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
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DOI: 10.25105/jetri.v20i1.14081
<![CDATA[Reducing the spread of the Covid-19 virus and handling every patient affected by Covid-19 are the main targets of the Indonesian government in dealing with the current pandemic. It takes cooperation between individuals. For example, between health workers and patients who are undergoing independent isolation (isoman) due to being infected with Covid-19. Body temperature, heart rate, blood oxygen levels, and patient movement are the main parameters of a Covid-19 patient that must be routinely checked and monitored by health workers. Patients in self-isolation also need to monitor their health conditions while undergoing isolation. Besides being routine, examination and monitoring of the condition of isoman patients also need to be carried out continuously because the patient's condition can change at any time. In this study, a mobile-based wireless Covid-19 patient condition monitoring system was developed so that monitoring can be carried out remotely. This system uses MCP9808 as body temperature, MAX30100 as a sensor for heart rate and blood oxygen levels, and GPS as a sensor for patient movement in isolation locations. The data obtained from each of these sensors will be sent wirelessly to the cloud database using the NodeMCU ESP8266. The data received in the cloud database is displayed in real-time on a mobile-based dashboard and analyzed to obtain information on the progress of the patient's condition. This system is to assist health workers in monitoring the condition of Covid-19 patients remotely and help self-isolated patients to monitor their health without always having direct contact with health workers. Health workers are facilitated to find out the tendency of the patient's condition so that they can make the right decisions and actions.]]>
