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Muhammad Fahmi Hakim
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elposys@polinema.ac.id
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ELPOSYS: Jurnal Sistem Kelistrikan
Published by Politeknik Negeri Malang
ISSN : 2407232X     EISSN : 24072338     DOI : https://doi.org/10.33795
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering
ELPOSYS adalah jurnal nasional yang menyediakan sumber informasi ilmiah bagi peneliti dan akademisi, lembaga penelitian, lembaga pemerintah, dan industri. Kami menerbitkan research papers, review articles, dan case studies yang berfokus pada bidang ketenagalistrikan serta topik yang terkait. Semua makalah di-review oleh setidaknya dua reviewer. ELPOSYS diterbitkan oleh UPT – P2M Politeknik Negeri Malang dan diterbitkan tiga kali setiap tahun, yaitu Bulan Februari, Juni, dan Oktober. Artikel yang dipublikasikan bidang ilmunya sesuai atau relevan dengan topik-topik Jurnal ELPOSYS yang meliputi bidang (namun tidak terbatas pada): - Pembangkit, - Distribusi dan Transmisi Daya, -Konversi Daya, - Sistem Proteksi, - Transformator, - Teknologi Instalasi Listrik, - Kualitas Daya, - Aplikasi Teknologi Informasi pada Sistem Daya, - Aplikasi Kontrol Cerdas pada Sistem Daya, - Teknologi Pembangkitan berbasis Energi Terbarukan, - Mesin-mesin Listrik, - Pemodelan dan Simulasi Sistem Daya, - Elektronika Daya, - Pengukuran Besaran Listrik, - Kestabilan Sistem Daya, - Topik lain yang terkait.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 6 Documents
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Search results for , issue "Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)" : 6 Documents clear
Sistem Pemantauan dan Pengendalian Kinerja Beban Listrik Melalui Telegram Ruman, Oktavianus; Setiawan , Aries Boedi; Sari , Resi Dwi Jayanti Kartika Sari
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.7355

Abstract

The advancement of Internet of Things (IoT) technology has enabled the development of smarter and more efficient electrical systems. In this research, a smart meter system was designed and built using the ESP8266 microcontroller, PZEM-004T sensor, and relay module, integrated with the Telegram application. The system can monitor electrical parameters such as current, voltage, power, and energy consumption (kWh) in real-time, as well as providing remote load control features. The PZEM-004T sensor is used to accurately measure electrical parameters, while the relay functions as an additional protection mechanism against overcurrent conditions, with a current threshold of 2 Amperes. The system is also designed to automatically send daily energy consumption reports and cost estimates via Telegram. Test results show that the system can read data with high accuracy (relative error < 5%) and can automatically or manually control the power load via Telegram. Real-time notifications, energy reporting, and cost estimation features make this system effective for practical and economical electricity monitoring and control.
Implementasi Battery Management System Pada PLTS Hibrida Skala Kecil Binar Surya Gumilang; Mohammad Noor Hidayat; Rohmanita Duanaputri; Salman Alfarisi
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.7652

Abstract

This study investigated the implementation of a Battery Management System (BMS) as a protective and performance-enhancing component in a small-scale hybrid solar power plant storage system rated at 10 × 100 Wp. Battery degradation, voltage imbalance, and excessive discharge currents are persistent challenges in off-grid and hybrid photovoltaic systems, particularly in rural electrification applications. The purpose of this research was to evaluate the effectiveness of an active cell balancing–based BMS in improving battery voltage stability, regulating discharge current, and extending battery life cycles.The research employed an experimental method by comparing system performance before and after BMS installation under identical charging and discharging conditions. Experimental results showed that prior to BMS installation, charging voltages among four VRLA batteries were unbalanced, ranging from 13.70 V to 13.80 V, and discharge currents reached up to 50.3 A. After BMS implementation, charging voltages became uniform at approximately 13.44 V, while discharge currents were limited to a maximum of 29.9 A. Furthermore, the SOC threshold was regulated from 100% to 90%, and discharge duration increased from 1.5 hours to 2 hours. Based on battery datasheet analysis, the estimated battery life cycle increased from a maximum of 372 cycles to 572 cycles. These findings indicate that the integration of a BMS with active cell balancing significantly enhances operational stability, thermal safety, and battery longevity. The results imply that BMS adoption is essential for improving reliability and sustainability of small-scale hybrid solar energy systems.
Implementasi Thermoelectric Generator Lilin Sebagai Solusi Energi Tepat Guna Daerah Terpencil Kalimantan isdhianto, Irfan; Himawan, Helmy Mukti; Setiawan , Dona
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.7780

Abstract

The demand for electricity in remote areas of Kalimantan remains a significant challenge due to the limited reach of the national power grid. This research aims to develop a low cost, eco friendly, and practical power generation solution using a thermoelectric generator (TEG) integrated with a candle based heat source. A prototype candle tube was designed and constructed using copper heat exchangers, TEG modules, and passive cooling systems (heatsinks). The system was tested under two conditions using one and two candles as heat sources while powering LED lights. Temperature data on the hot and cold sides of the TEG were recorded using an Arduino data logger, and the electrical output (voltage and current) was monitored using a USB multimeter. Results showed that increasing the number of candles significantly raised the temperature difference across the TEG, from 24°C with one candle to 39°C with two, leading to a voltage increase from 2.68 V to 2.80 V, current from 0.06 A  to 0.16 A, and power output from 0.15 W to 0.44 W. These findings demonstrate that the system's performance correlates directly with the thermal gradient. With its simple design, accessible materials, and passive operation, this candle based TEG system offers a promising alternative energy source for rural communities lacking access to conventional electricity, especially in Kalimantan’s interior regions.
Optimasi Perencanaan Pembangkit Listrik Tenaga Surya Atap On-Grid Melalui Simulasi PVsyst Slamet Nurhadi; Priya Surya Harijanto; Mochamad Ferdy Hamzah
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.8676

Abstract

This study addressed the critical issue of Indonesia's persistent dependence on fossil fuels and the urgent need to accelerate New and Renewable Energy (NRE) adoption. The purpose of the research was to develop a comprehensive technical plan for a 1.202 kWp grid-tied rooftop photovoltaic (PV) system at a manufacturing facility in Karawang. The methodology employed a systematic approach consisting of site surveys, electrical configuration design (stringing, cabling, and protection systems compliant with PUIL 2020), and verification through PVsyst simulation software. Important findings revealed that the designed system projected an annual energy yield of 1,624,801 kWh with a Performance Ratio (PR) of 76.1%. The implications of this research suggested that the proposed rooftop PV system is technically robust and provides significant economic and environmental benefits, including an estimated annual revenue of IDR 1.68 billion and a reduction of 1,348.58 tons of CO2 emissions. These results demonstrated that large-scale industrial rooftop PV systems are a viable solution for achieving national energy transition goals
Klasifikasi Status Idle dan Kerja Wheel Loader WA350 Berbasis Akselerometer Tunggal Dhendy Zaki Ridwan; Branjangan, Panji Peksi; Winarko, Wigo Ardi
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.8794

Abstract

Conventional hour meters on heavy equipment accumulate engine-ON time without distinguishing productive working from non-productive idle, which can bias preventive maintenance scheduling. This study evaluates the feasibility of separating idle and working conditions of a Komatsu WA350 wheel loader using a single tri-axial accelerometer. Vibration data were recorded at 700, 900, 1100, and 1300 rpm under two scenarios: engine-on with bucket stationary (idle) and engine-on with bucket actuation without load (working). The main indicator is the time-domain Root Mean Square (RMS) on AccX, AccY, and AccZ to represent vibration energy per axis, supported by low-frequency spectral inspection for interpretation. For paired comparison, the analysis focuses on 700–1100 rpm because the 1300 rpm dataset does not include a verified idle counterpart. The results show that AccX provides the most consistent separation, where RMS in working increases by approximately 10–13% compared to idle at 700–1100 rpm, while AccY is less stable and AccZ changes are minimal. These findings support a simple RMS-based logic as a practical basis for smart hour-metering to better reflect operational workload and improve service notification timing. Limitations include controlled test conditions (no-load bucket cycles) and a single mounting location; broader validation under varied loads, terrains, and operators is required.
Performa Antena Directional dan Omnidirectional pada Sistem FPV Walksnail Avatar Peksi Branjangan, Panji; Ridwan, Dhendy Zaki
Elposys: Jurnal Sistem Kelistrikan Vol. 12 No. 3 (2025): ELPOSYS VOL. 12 NO.3 (2025)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v12i3.8798

Abstract

Visual monitoring in heavy equipment operations was critical for reducing workplace accidents caused by operator blind spots. Conventional static cameras and sensors often failed to provide adequate coverage in dynamic environments, leading to limitations in situational awareness. This study aimed to evaluate the transmission performance of the Walksnail Avatar digital FPV system using directional and omnidirectional antennas for blind spot monitoring applications. An experimental method was employed by configuring a digital FPV transmitter and receiver at a fixed distance of 20 meters with a wooden obstacle placed along the transmission path. The receiver antenna orientation was rotated at 10-degree intervals to measure variations in data rate and latency. Two antenna configurations were tested: a 9.4 dBi directional patch antenna and a standard omnidirectional antenna. The results indicated that the directional patch antenna achieved a maximum data rate of 25 MBps at frontal orientations but experienced significant degradation at lateral angles, with latency increasing up to 100 ms. In contrast, the omnidirectional antenna demonstrated more uniform performance across all directions, maintaining data rates between 19–24 MBps and stable latency below 45 ms. These findings were consistent with antenna radiation theory regarding gain concentration and angular coverage.The study implied that omnidirectional antennas were more suitable for blind spot monitoring in heavy equipment operations due to their consistent coverage and low latency, while directional antennas were better applied for focused line-of-sight monitoring scenarios. The results provided empirical guidance for selecting antenna configurations in digital FPV-based industrial safety systems.

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