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All Journal Jurnal Informatika dan Teknik Elektro Terapan Electro Luceat Rekayasa Teknologi Journal of Industrial Engineering & Management Research (JIEMAR) International Journal Science and Technology (IJST) Makara Journal of Technology International Journal of Advanced Multidisciplinary Proceeding Mercu Buana Conference on Industrial Engineering
Abdul Multi
Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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Kajian Penjadwalan PLTA Pompa Dengan Metode Gradient Pada Sistem Tenaga Listrik Multi, Abdul
Rekayasa Teknologi Vol 2 No 2 (2011): Rekayasa Teknologi
Publisher : Rekayasa Teknologi

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Abstract

This paper presents the study of scheduling pumped storage unit based on the Gradient method. After optimizing hydro-thermal units existed in the system, the problem is to determine the scheduling of pumped storage unit. This paper concentrates on the study of solution methodology for pumped-storage. A pumped-storage unit can be operated in generation, pumping or idle states. It can smooth peak loads and provide spinning reserve, therefore plays an important role in reducing total generation costs. There are, however, many constraints limiting the operation of a pumped-storage unit, such as reservoir volume, inflow and discharge of hydro plant. It saves fuel costs by generating during peak load with water in the upper reservoir, which would be pumped up during light load hours.
Tinjauan Pembangkit Hidrotermis Setelah Penggabungan PLTA Pompa Pada Sistem Tenaga Listrik Jawa-Madura-Bali Multi, Abdul
Rekayasa Teknologi Vol 1 No 1 (2011): Rekayasa Teknologi
Publisher : Rekayasa Teknologi

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Abstract

With the pumped storage integrated to the power system, an analysis of its schedulingis needed. The study is in the electrical power system related to hydrothermal units in thepower system of Jawa-Madura-Bali (JAMALI).The scheduling is based on the daily loadcurve and load distribution among hydrothermal units. With pumped storage operated, theload flow will influence the stability of power system. The objective of thermal unitsoptimization is to minimize total operation costs. Scheduling of pumped storage and optimization of thermal units are used a particleswarm optimization (PSO) technique due to its high-performance and flexibility. PSO isused as base algorithm to search for better solution. In addition power balance, waterdischarge and reservoir volume are considered. For the necessity of analysing it needs tosimulate in forcasting load of short term, scheduling pumped storage operation,computing load flow and minimising generation costs in the power system of JAMALI.
METODE DETEKSI FASA PADA SALURAN LISTRIK TEGANGAN RENDAH DENGAN Esp32 DAN KOMUNIKASI LoRa Darmana, Tasdik; Putra, Rizki Pratama; Sitorus, Meyhart Torsna Bangkit; Multi, Abdul; Ariman
Journal of Industrial Engineering & Management Research Vol. 3 No. 1 (2022): February 2022
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (548.108 KB) | DOI: 10.7777/jiemar.v3i1.285

Abstract

Load balancing on a low-voltage distribution sistem by adjusting the phase of the new load to be installed requires information on the type of line phase that will be connected to the load. In this research, a phase reading method is proposed using Esp32 with LoRa communication. The purpose of this research is to make a method of reading phase with independent and reliable communication. The phase reading method is carried out by calculating the time difference between the periodic zero values of a phase and then comparing it with other phases to determine the type of phase based on its similarity. With this principle the effect of harmoniks can be reduced where the harmoniks do not affect the time of the zero value of the periodic sinusional wave. Based on the results of the review conducted, this method is better than the conventional method using an electronic mosfet circuit or logic gate where the reference signal cannot be adjusted and the fabrication process is for high-cost commercialization
Determining the Air Gap Length of an Axial Flux Wound Rotor Synchronous Generator Multi, Abdul; Garniwa, Iwa; Sudibyo, Uno Bintang
Makara Journal of Technology Vol. 17, No. 2
Publisher : UI Scholars Hub

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Abstract

The air gap length of the designed axial flux wound rotor (AFWR) synchronous generator is determined properly according to the design parameters. One of the distinct advantages of an axial flux (AF) machine is its adjustable air gap. An AF generator’s performance might be controlled by adjusting its air gap. The designed generator has a smallscale capacity that has 1 kW, 380 V, and 50 Hz. The windings are laid into slots made from laminated core. The slots are carved in the face of the stator and rotors. The generator has a single-double-sided slotted wound stator sandwiched between twin rotors. The effect of air gap changes on its performance can be seen from the calculation results using the given equations. The results reveal electric quantities suited to the machine’s effective performance. The smaller the air gap, the greater the efficiency and power factor and the smaller the armature current and voltage. The efficiency and armature current for 0.1 cm air gap are 85.30 % and 1.815 A, respectively.
Performance Analysis of Extraction Condensing Turbine - Unit 1 at Pltu X, Bekasi, West Java Komarudin, Komarudin; Abrianto, H. Heru; Multi, Abdul; Putra Utama, Adi
International Journal of Advanced Multidisciplinary Vol. 2 No. 1 (2023): International Journal of Advanced Multidisciplinary (April-June 2023)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v2i1.217

Abstract

In 2014, Cikarang Listrindo Energy built a steam power plant in Babelan to participate in the government programs. In April 2017, Unit 1 of PLTU Babelan has been operated. After the plant has been in operation for 4 months, the plant will have a performance test for the main part of the steam power plant, one of which is the steam turbine performance test. This performance test purpose is to get actual performance data where it will be compared to the design data, and it willl be used for warranty from the steam turbine contractor. The performance test is using ASME PTC 6 for steam turbine performance test. The steam turbine performance test can be seen from several parameters such as test capability, heat rate and turbine efficiency. The results of the steam turbine performance test based on the design are: the output power is 138,010 MW; the heat rate is 8865 kJ/kWh; and the turbine efficiency is 87.38%. Meanwhile the results of the performance test based on commissioning are: the output power is 139,295 M; the heat rate is 8919 kJ/kWh; and the turbine efficiency is 87.03%. The actual performance test results are: the output power is 137,595 MW, the heat rate is 8830.64 kJ/kWh, and the turbine efficiency is 88.65%. The tolerance given from ASME PTC 6 is 2%. Exhaust turbine pressure affect the turbine efficiency, where as lower exhaust turbine pressure causes higher turbine efficiency.
Design and Development of Real-Time Monitoring & Controlling Infant Incubator with Tilt Stabilizer Using Raspberry Pi Remotely Controlled via PC and Smartphone to Reduce Tilt during Baby Transfer Romadhon, Syaiful; Multi, Abdul
International Journal of Advanced Multidisciplinary Vol. 2 No. 2 (2023): International Journal of Advanced Multidisciplinary (July-September 2023)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v2i2.310

Abstract

This research aims to Design and Development of Real-Time Monitoring & Controlling Infant Incubator with Tilt Stabilizer Using Raspberry Pi Remotely Controlled via PC and Smartphone to Reduce Tilt during Baby Transfer. An experimental approach was used, involving data collection, controller determination, hardware design, circuit schematics, software design, and user interface development. Raspberry Pi was selected as the controller due to its sufficient GPIO pins for reading sensors and operating actuators. The tilt stabilizer was created using NEMA 17 stepper motor and a self-designed flexible screw nut to ensure precise tilt adjustment. During testing, the system demonstrated reliable performance, verified through analysis of test data and sensor readings on the HDMI-connected screen, and remote accessibility via PC and smartphone using the internet. The incubator's temperature consistently maintained 37°C using PID control. On an inclined surface of 20°, the tilt stabilizer effectively maintained a stable 10° inclination during baby transfers.
Supercapacitor Implementation To Prototype Energy Storage System Optimizer in PV System Zakaria, Muhamad; Multi, Abdul; Sofwan, Agus
International Journal of Advanced Multidisciplinary Vol. 2 No. 4 (2024): International Journal of Advanced Multidisciplinary (January-March 2024)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v2i4.437

Abstract

This research aims to create a prototype of an energy storage optimizer in a PV system using a supercapacitor in combination with batteries. The purpose of adding supercapacitors in this prototype is to maintain battery usage when there is a change in irradiation with a loading source that refers to the amount of electrical current and voltage as a supply of energy. A sudden increase in load without an energy buffer component can affect battery endurance. This can result in a decrease in electrical energy supply. Based on experimental results, it has been found that the battery and supercapacitor complement each other. The battery works more statically while the supercapacitor works more dynamically. Thus, the power output to the load is more stable, and the battery can be more durable because when there are extreme changes in irradiation and load, they can be overcome by supercapacitors.
Application Design of A Multiple Power Source Monitoring System Based On The Internet Of Things (IOT) Multi, Abdul; Mujiburohman; Wardana, Kun
International Journal of Advanced Multidisciplinary Vol. 2 No. 4 (2024): International Journal of Advanced Multidisciplinary (January-March 2024)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v2i4.457

Abstract

At the present time, technology is developing rapidly in various scientific fields. People continue to develop and research the latest technologies to make human life easier. One of them is in the field of IoT (Internet of Things) technology. The use of electrical devices in each power source has different electrical power consumption. And this often happens, so when using electrical equipment, each power source is a tool for monitoring the use of electrical power, so that the use of electrical power in multiple power sources is in accordance with the required power. Therefore, a tool is designed that can facilitate the performance of activities to monitor the use of electric power, the results of which can be displayed through LCD 16X2 and can be informed through the Internet. The purpose of this research is to design an IoT-based electric power monitoring system to facilitate the monitoring of electric power consumption in multiple IoT-based power sources. The method used in data collection is quantitative method. With the collection of several components needed, which are designed in this study such as voltage sensors, Ethernet shields, hub switches and Arduino Uno microcontrollers. This research will monitor IoT-based power, and can be monitored via the Internet in the form of a graphical display on a desktop application or in the form of a monitoring web page. The results showed that the average error value in testing the voltage sensor was 0.02%, the sensor for current readings had an error value of 0.19%, and the value of power was 0.18%. So it can be concluded that by having a fairly small difference and error, this tool is said to be quite good and then by testing the monitoring application system on the web page that is made capable of sending, storing and displaying data on the monitoring web page in real time every minute even with different power sources, in tests conducted with two different power sources and can be measured properly, so that testing the web monitoring application can be said to be good because it can monitor electrical power of multiple power sources.
Design of an Efficiency Power Load Control Device on Production Machines with SCADA Basen on Programmable Logic Controller and Smartphone Supriyadi, Edy; Multi, Abdul; Ilyas, Iriandi; Jayanto Ramadhan, Anthony
International Journal of Advanced Multidisciplinary Vol. 3 No. 2 (2024): International Journal of Advanced Multidisciplinary (July-September 2024)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v3i2.566

Abstract

With limited electrical resources and the increasing use of loads on the industry, it is required to optimize the use of electrical power. Thus, it requires continuous monitoring and automatic load control. Overall monitoring of power loads, and electrical control settings in the optimization of production machines that can be monitored remotely and comprehensively. To overcome this problem, the design of the electrical power load control device on production machines with scada based on programmable logic controllers and smartphones is made. This study uses an experimental method to obtain a suitable machine simulator, then the following steps are carried out: collecting data and information, determining the controller and communication system, making hardware design, wiring simulator, software controller design, android smartphone software design and HMI software design. As for the control of the electric power control system in optimizing the operation of production machines with scada and smartphones. From the test results obtained a system that can work well. This is evidenced by looking at the measurement data for testing the input/output signal from the controller by looking directly at the controller, as well as on the HMI monitor by displaying the amount of electrical power used and the amount of available electrical resources, which is done by simulating analog input/output. with a scale of 0-100% (0-10 V), 0-1000 KW (0-10 V).
TWO-AXIS SOLAR PANEL TRACKING DEVICE PROTOTYPE WITH IOT-BASED MONITORING Awan, M. Asep Rizkiawan; Sofwan, Agus Sofwan; Multi, Abdul
International Journal Science and Technology Vol. 3 No. 1 (2024): March: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v3i1.1086

Abstract

The aim of this project is to develop a dual-axis solar tracker equipped with an IoT monitoring system with the BLYNK platform using Arduino. Overall, solar energy refers to technologies that generate power from sunlight. The utilization of solar energy has been around for centuries and has been widely used without relying on other energy supplies. However, its importance is increasing as environmental awareness grows and the availability of other energy sources, such as fuel, becomes limited. Sun tracking systems are an effective technology that can improve the efficiency of solar panels by following the movement of the sun. With the help of this system, solar panels can automatically orient themselves to sunlight, improve sunlight detection, and increase electricity collection because solar panels can always be in a bright position. This project focuses on developing a two-axis sun tracker using Arduino Uno as the main controller. For its implementation, four light-sensitive resistors (LDRs) are used to detect sunlight and maximum light intensity. Two servo motors are used to move the solar panel according to the direction of sunlight detected by the LDRs. Furthermore, an ESP8266 WIFI device is used as an intermediary between the device and the IoT monitoring system. The IoT monitoring system is a website that serves to store data. The efficiency of this system is tested and compared with single axial sun tracking. The results show that the two-axis solar tracking system generates more power, voltage, and current compared to the single axial solar tracker.
Co-Authors Abrianto, H. Heru Agus Sofwan Sofwan, Agus Sofwan Ariman BHIRAWA, WASPADA TEDJA Cahyadi, Muhammad Rijal Darmana, Tasdik Edy Supriyadi Faturrachman, Luthfi Harfi, Razul Ilyas, Iriandi Jayanto Ramadhan, Anthony Komarudin Komarudin Luh Putu Ratna Sundari M. Asep Rizkiawan Meyhart Bangkit Sitorus Mujiburohman Purnomo, Agung Sigit Putra Utama, Adi Putra, Rizki Pratama Resdinanto, Resdinanto Romadhon, Syaiful Samiaji, Ghani Sofwan, Agus Supriadi, Eddy Uno Bintang Sudibyo Uno Sudibyo, Uno Wahyuningsih, Eko Sri Wardana, Kun Zakaria, Muhamad