ELKHA : Jurnal Teknik Elektro
The ELKHA publishes high-quality scientific journals related to Electrical and Computer Engineering and is associated with FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia / Indonesian Electrical Engineering Higher Education Forum). The scope of this journal covers the theory development, design and applications on Automatic Control, Electronics, Power and Energy Systems, Telecommunication, Informatics, and Industrial Engineering.
Articles
302 Documents
<![CDATA[Klasterisasi Kerusakan Bearing Motor Induksi 3 Fasa Menggunakan Metode Transformasi Wavelet Diskrit dan K-Medoids ]]>
<![CDATA[Naufal, Eska Rizqi]]>;
<![CDATA[Priyandoko, Gigih]]>;
<![CDATA[Hunaini, Fachrudin]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 12 No. 2 October 2020 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v12i2.41511
<![CDATA[The 3 phase induction motor is a reliable and strong motor also has cheap price. However induction motor are also vulnerable, from the result of survey conducted by Electric Power Research Institute (EPRI), there are 41% cases of damage occur in the bearing caused by working environment condition, bearing age, and several other factors. Bearing fault is not easily to identified, with applying the data extraction method using the Discrete Wavelet Transform (DWT) and the K-Medoids clustering method will facilitate the identification process. The extraction method will pass the data in the form of current signals into the digital filter (Low Pass Filter and High Pass Filter) to be mapped into the region of frequency and time simultaneously, and clustering method will group data based on certain characteristics. Based on the clustering tests that have been done on the 3 phase induction motor current signal data with 3 bearing conditions, the Discrete Wavelet Transformation with mother wavelet bior1.1 decomposition level 2 and K-Medoids produce an accuracy rate of 86.8%.]]>
<![CDATA[Conditioning of Temperature and Soil Moisture in Chrysanthemum Cut Flowers Greenhouse Prototype based on Internet of Things (IoT) ]]>
<![CDATA[Fauziyah, Mila]]>;
<![CDATA[Safitri, Hari Kurnia]]>;
<![CDATA[Dewatama, Denda]]>;
<![CDATA[Aulianta, Erdin]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v13i1.43078
<![CDATA[Currently, cut chrysanthemum cultivation in a greenhouse is still using a conventional system. Temperature and soil moisture are the most important factors in the growth process. If the temperature and humidity of the soil are not conditioned, the roots will quickly rot and slow the growth process of chrysanthemums. Internet of Things is an integrated system with a data-based server that stores data in the cloud from sensors so that the system can be monitored remotely in real-time. Based on this, an integrated system was designed to make it easier for farmers to condition the temperature and humidity of the chrysanthemum flower soil. In temperature conditioning, if the temperature of cut chrysanthemum is detected 24 ℃ then the heater will be "on" by adjusting the fan rotation and vice versa. Meanwhile, soil moisture conditioning is carried out by distributing water if the detected soil moisture is 50%, then the water pump is in the "on" state. The data on the degree of temperature and the percent of soil moisture will be recorded into the cloud which will then be displayed in the form of graphs and history data on the webserver and Android. By using this system, it is found that the growth process of cut chrysanthemums can grow 7 days faster than the standard harvest time of 30 days.]]>
<![CDATA[Monitoring and Controlling of pH Levels and Plant Nutrition Supplied by Standalone Photovoltaic in a Greenhouse Hydroponic System using Arduino Uno ]]>
<![CDATA[Kurniawan, Lutfi Athanuzul]]>;
<![CDATA[Amirullah, Amirullah]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v13i1.45657
<![CDATA[This paper aims to implement the prototype model to monitor and control the pH levels and nutrition plant (electrical conductivity-EC) supplied by a standalone photovoltaic (PV) module-connected battery (Lithium-Ion) on the greenhouse hydroponic systems. The pH and EC sensors are connected to the Arduino Uno circuit as a relay control to drive four pumps, i.e. the water flow pump, EC pump, pH up pump, and pH down pump. The greenhouse function to control pests and the impact of environmental non-uniformity caused by variation of wind speed, temperature, or sunlight so that hydroponic plants can grow in an appropriate environment. The Arduino Uno circuit with a 20 × 4 liquid crystal display (LCD) order four relays to monitor and control the four pumps of the greenhouse hydroponic system based on the coding which has been programmed previously. The prototype model is able to monitor and control the pH of hydroponic plant water at the level between 6-7 using a pH-up and pH-down sensor. This model is also able to monitor and control nutrition plant water over 1 mS/cm using an EC sensor. Finally, the proposed prototype is able to monitor and control EC and pH level to regulate plant growth in the greenhouse hydroponic system normally and in real-time.]]>
<![CDATA[SISTEM KENDALI KEKERUHAN DAN pH AIR KOLAM BUDIDAYA IKAN NILA ]]>
<![CDATA[Pulungan, Ali Basrah]]>;
<![CDATA[Putra, Aditya Manggala]]>;
<![CDATA[Hamdani, Hamdani]]>;
<![CDATA[Hastuti, Hastuti]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 12 No. 2 October 2020 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v12i2.40688
<![CDATA[This study aims to make a tool that can monitor the condition of the pH level and water turbidity in fish ponds so that fish growth can be maximized. This fish pond has a control system that can be controlled automatically. The purpose of using this control is to get maximum results and to save water use in fish ponds This tool has two sensors consisting of a TDS-10 sensor which functions to detect the turbidity level of water in fish ponds and a pH sensor which functions to detect the pH level of the water in the fish pond. Comparison with previous research, the application of fish ponds with a size of 3 x 4 meters so that observations about how the tools work and the success rate of the tools can be observed more intensively. In addition, the ESP8266 wifi module is supported as a collaboration monitoring center without the need to come to the location directly Based on the test results of the TDS-10 sensor and pH sensor that have been carried out in the fish pond, the test results show good performance with the proportion of detection error of the TDS-10 sensor (4.8 NTU) to the set point (5 NTU) is 4%.]]>
<![CDATA[Pengaruh Bahan Pengisi Cangkang Kelapa Sawit Komposit-Silicone Rubber Dalam Permulaan Pemohonan Listrik ]]>
<![CDATA[Fitriah, Fitriah]]>;
<![CDATA[Kurnianto, Rudi]]>;
<![CDATA[Rajagukguk, Managam]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 12 No. 2 October 2020 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v12i2.40941
<![CDATA[Inception of electrical treeing can irreversibly deteriorate the insulation of polymeric power cables leading to a complete failure and initial process of degradation in polymer insulation due to a void that experiences high electric field stress in the material. This paper present will study filler’s influence on inception of electrical treeing growth in silicone rubber – oil palm endokaprium composite. The observed data is inception voltage and time phenomena in two types of test sample, that is " with filler " and " without filler ". Sample of filler consisted of silicone rubber and oil palm endokaprium composite for oil palm endokaprium weight is 0.1 grams and weight silicone rubber 3.9 gram. While the sample without filler is only silicone rubber . It is obtained that the tree inception voltages dan time for “with†dan “without filler†specimens are 8 kV / 182 seconds and 7,5 kV / 137 seconds, respectivelly.. It is considered that “fillerâ€Â acted as a barrier for tree inception. We throught that “filler†enhanced dielectric strength of silicone rubber and oil palm endokaprium by disturbing high electric field stress, result in higher tree inception voltage and longer tree inception time.]]>
<![CDATA[IoT-based Running Time Monitoring System for Machine Preventive Maintenance Scheduling ]]>
<![CDATA[Sitompul, Erwin]]>;
<![CDATA[Rohmat, Agus]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v13i1.44202
<![CDATA[Machines are valuable assets that need to be protected from damage and failure through proper maintenance measures. This paper proposes a system that automatically monitors the running time of machines and sends notifications regarding their preventive maintenance (PM) schedules. The system core consists of a programmable logic controller (PLC) and a human machine interface (HMI). The HMI is connected to an online platform via internet connection provided by a router, so that the monitoring result can be accessed via Android smartphone or laptop/PC. This IoT-based running time monitoring system (IRTMS) will be particularly helpful in implementation at an production site that consists of multiple various machines. The PM items of a machine may vary from cleaning, changing single component, to an overhaul, each with different time interval. By using the IRTMS, the user will have an overview of the PM schedules anytime and anywhere. The preparation of material, components, or tools can be known ahead of time. For simulation purpose, a prototype is constructed by using components as used in industrial real-life condition. Four output connections are provided to simulate the simultaneous monitoring of four machines. The IRTMS prototype is tested and completely successful on doing the running time monitoring, the running time reset, the PM notifications, and the remote access for monitoring and control.]]>
<![CDATA[Reliability Analysis and Maintainability for the Design of Grid and Hybrid Solar Power Plant Systems in Wonogiri Regency ]]>
<![CDATA[Nur’Aini, Etika]]>;
<![CDATA[Budiarto, Rachmawan]]>;
<![CDATA[Setiawan, Bakti]]>;
<![CDATA[Ma'arif, Alfian]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v13i1.46011
<![CDATA[Indonesia has the potential for large solar power plants. It has relatively constant solar radiation because it is close to the equator. Besides, solar energy includes renewable energy that is more environmentally friendly and easier to apply in office areas, especially Wonogiri. However, it turns out that the solar power plant projects that have been built are not yet fully functional, and some have even failed. A lack of responsibility and maintenance causes this carried out after the project is complete. For this reason, it is necessary to estimate the reliability of these components and determine the maintenance schedule before the project is carried out. So that later they have a picture and be better prepared when this project is already underway. The fault tree method's failure factors are expected to create a picture to maintain reliability and determine the prioritized components for maintainability. For the results obtained to be more appropriate, apart from seeing the quantitative analysis output, the fault tree also needs to be adjusted to the component manual or datasheet to determine the replacement of spare parts and their maintenance. So that the resulting schedule for maintenance and replacement of spare parts. Thus, the solar power plant project that has been built will be more reliable and can be appropriately utilized.]]>
<![CDATA[Perbandingan Perolehan Daya Solar Panel Monocrystalline Terhadap Solar Panel Polycrystalline ]]>
<![CDATA[Pratama, Ervan]]>;
<![CDATA[Watiasih, Richa]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 12 No. 2 October 2020 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v12i2.41518
<![CDATA[The availability of two types of solar panels that are common in the market namely monocrystalline and polycrystalline types cause confusion in the selection so that many solar panel users are questioning the differences of these two types of solar panel. This study produced a data logger system using Arduino Uno R3 to control voltage, current and temperature sensors for logging data that stores power measurement data from monocrystalline and polycrystalline solar panel in a micro SD. After it we can manage data to compare power produced between two types the solar panel. From the results of testing this data logger system it can be seen that monocrystalline solar panel are 9.18% better on power produced than polycrystalline when the maximum power conversion is generated.]]>
<![CDATA[Perancangan, Implementasi Monitoring dan Kontrol Alat Pemanggang Kopi ]]>
<![CDATA[Tampubolon, Friyogi]]>;
<![CDATA[Pratama, Yohanssen]]>;
<![CDATA[Dirgayussa, I Gde Eka]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 12 No. 2 October 2020 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v12i2.41188
<![CDATA[Coffee roasting is the process of removing the water that is exist in the coffee beans. Roasted coffee beans will change weight and give a nice aroma and taste. The longer the coffee beans are roasted, the color of the coffee beans will continue getting darker blackish brown. The roasting level of coffee beans is determined from the change in color of coffee beans starting from light, medium and dark. Roasting coffee beans that develop on a home industry scale is still manual, that is, using more human labor in its operation. Therefore, this research will be made an automatic coffee roasting machine using a heater to heating the coffee beans, a DC motor to stir roasted coffee beans and a webcam to monitor changes in the color of coffee beans when roasted. Components of heating elements and motors controlled by Arduino Mega 2560 microcontroller while the webcam is connected with Raspberry Pi 3. As a component of performance that has been met with sensors as data collectors, microcontrollers as data processors and actuators as control systems. In this researh 3D modeling for a roasting container is done using SketchUp 3D design software. The results of the coffee roasting machine can meet the requirements of the system designed in accordance with the roasting level desired by the user and the thermocoupel give a better result in reading the temperature parameter compared to infrared thermometer. In 4,5 minutes the difference reading in temperature reach 27,50C between two sensors.]]>
<![CDATA[Design of Cooling and Heating Tool Using Thermoelectric Peltier Based On Arduino Uno ]]>
<![CDATA[Alam, M Kevin Rambang]]>;
<![CDATA[Fitriawan, Helmi]]>;
<![CDATA[Setyawan, F.X Arinto]]>;
<![CDATA[Murdika, Umi]]>
<![CDATA[ ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021 ]]>
Publisher : <![CDATA[Faculty of Engineering, Universitas Tanjungpura ]]>
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DOI: 10.26418/elkha.v13i1.44421
<![CDATA[Cooler is an electronic device used to cool food and drinks. The current cooling system still uses refrigerants that can damage the ozone layer. The thermoelectric based cooling system can be used as an alternative since it produces sufficient temperature difference on both sides by considering its advantages that is more environmentally friendly. This research is aimed to design and built a cooling and heating system using a thermoelectric Peltier TEC 12715 based on microcontroller Arduino uno. This system uses the Peltier thermoelectric effects as coolant and warmer because it produces temperature difference on both sides. Based on this research, in the no load condition the system can produce a cold temperature of 21,3 ℃ and a hot temperature of 80,2 ℃ in the 40th minute of use. When given a load of 300 ml and 220 ml drink bottles, the system can produce a cold temperature of 22,2 ℃ and a hot temperature of 70,7 ℃ in the 40th minute of use. The TEC 12715 Peltier component used in this research produces the optimal temperature if a voltage of 12 volts and a current of 15 amperes are applied to each Peltier component. The designed system is able to operate repeatedly, properly, and continuously since it is directly connected to alternative current power which is common in households.]]>
