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All Journal Jurnal TIMES JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal Elektro dan Telkomunikasi Jurnal Engine: Energi, Manufaktur, dan Material El-Iqtishady Abdimas: Papua Journal Of Community Service Journal Software, Hardware and Information Technology International Journal of Educational Review, Law And Social Sciences (IJERLAS) Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) AJAD : Jurnal Pengabdian kepada Masyarakat Mauriduna : Journal of Islamic studies Jurnal Nasional Teknologi Komputer International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Journal of Accounting Research, Utility Finance and Digital Assets (JARUDA) Journal Agroecotech Indonesia (JAI) Jurnal Riset Hukum, Ekonomi Islam, ekonomi, Manajemen dan Akuntansi Jurnal Kreasi Rakyat SABAJAYA Jurnal Pengabdian Kepada Masyarakat GEMBIRA (Pengabdian Kepada Masyarakat) Jurnal Kesehatan Republik Indonesia Jurnal Teknik Elektro dan Komputer Indonesian Journal of Economic & Management Sciences (IJEMS) Jurnal Sains Materi Indonesia
Rahmaniar
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Journal : Jurnal Nasional Teknologi Komputer

 1 
Analisis Dampak Harmonisa terhadap Efisiensi Energi pada Pengoperasian Inverter Air Conditioner Nofan Rullyanto Tinambunan; Rahmaniar
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.200

Abstract

This research analyzes harmonic characteristics and their impact on energy efficiency in inverter air conditioner operation, as well as evaluates the effectiveness of harmonic mitigation methods. Using a MATLAB/Simulink-based simulation approach, the inverter AC system was modeled under various load levels and operating conditions. Results show that Total Harmonic Distortion (THD) of current is inversely proportional to load level, with the highest THD (30.3%) occurring at 25% load and the lowest (4.5%) at 100% load. Dominant harmonics were identified at orders 3, 5, and 7, contributing significantly to power losses. At low loads, harmonic distortion causes efficiency reduction of up to 10% and decreases the Coefficient of Performance (COP) by approximately 12%. Implementation of passive filters consisting of single-tuned filters for 5th order (250 Hz), 7th order (350 Hz) harmonics, and a high-pass filter for higher-order harmonics (>550 Hz) effectively reduces current THD by 70-80% and harmonic losses by up to 90%, significantly improving system efficiency and COP. The greatest efficiency improvement occurs at low loads, with COP increasing from 9.2 to 10.2 at 25% load. This research provides a foundation for developing power quality standards and more effective harmonic mitigation strategies to enhance energy efficiency in inverter AC systems.
Pengaruh Penggunaan Inverter terhadap Pompa Sirkulasi di PT. Unilever Oleochemical Indonesia Fakhri, Ade; Rahmaniar; Dino Erivianto
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.205

Abstract

Pompa sirkulasi mengalirkan cairan pendingin di dalam sistem pendingin secara terus-menerus untuk menyerap panas dari peralatan-peralatan yang membutuhkan pendinginan pada proses produksi di dove plant. Pengendali kecepatan putar pompa sirkulasi tersebut menggunakan inverter. Metode penelitian yang digunakan adalah metode kuantitatif. Penelitian ini bertujuan untuk menganalisa pengaruh penggunaan inverter terhadap pompa sirkulasi serta melakukan perbandingan pemakaian daya listrik pompa sirkulasi menggunakan inverter dan tanpa inverter. Hasil penelitian menunjukkan jumlah kecepatan putar motor berbanding lurus dengan frekuensi dan daya listrik motor. Perbandingan rata-rata dalam 1 hari pemakaian daya listrik pompa sirkulasi menggunakan inverter sebesar 6,56 kW sedangkan pemakaian daya listrik pompa sirkulasi tanpa inverter sebesar 10,98 kW. Penghematan pemakaian daya listrik yang didapat pompa sirkulasi menggunakan inverter sebesar 4,42 kW per hari. Pemakaian daya listrik pompa sirkulasi yang menggunakan inverter jauh lebih hemat dibandingkan pompa sirkulasi tanpa inverter dikarenakan penggunaan inverter dapat mengatur kecepatan putar motor yang mengakibatkan tegangan keluaran dan arus motor tidak selalu dalam kondisi maksimal dan konstan, sehingga pemakaian daya listrik jauh lebih rendah.
Perencanaan Penerangan Jalan Umum (PJU) Menggunakan Energi Baru dan Terbarukan di Desa Tanjung Gusta, Dusun III, Kecamatan Sunggal Ilyasa Ramadhan; Rahmaniar; Erpandi Dalimunthe
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.217

Abstract

Indonesia has great potential in renewable energy, especially solar energy, due to its geographical location in the tropics. This study aims to plan an efficient and sustainable Street Lighting (PJU) system in Tanjung Gusta Village, Sunggal District, by utilizing new and renewable energy (EBT). Tanjung Gusta Village has a need for adequate street lighting to improve safety, mobility, and quality of life for the community. The research method includes a field survey to analyze conditions, calculation of lighting needs based on applicable standards, and design of a PJU system using EBT. The results of the study indicate that a PJU system with solar power is the most suitable solution for Tanjung Gusta Village, considering the availability of resources. The planning of this solar PJU system includes selecting the type of lamp to be used, determining the capacity of solar panels and batteries, and calculating the optimal layout and height of lamp posts.
Kajian Perencanaan Pembangkit Listrik Tenaga Surya Untuk Budidaya Ikan Mhd. Ilyasa Lubis; Dino Erivianto; Rahmaniar
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.230

Abstract

Sukaraya Village, Pancur Batu District, has great potential in the fisheries cultivation sector. Activities such as aeration and water pumping require reliable and efficient energy sources. Solar Power Plants (PLTS) are a sustainable solution that can overcome these obstacles, considering the abundant availability of sunlight in this area. This study aims to design an optimal PLTS system to support fish farming operations in Sukaraya Village. The design is carried out by considering the power needs of the fisheries system, the potential of solar energy, and the efficiency and reliability of the PLTS components. Based on the research results, the PLTS components consist of 15 pcs of 100 Wp polycrystalline solar panels, a 100 A solar charge controller, 4 12V 150Ah batteries, and an inverter capacity of 7000A. The results of calculations in the PLTS planning can distribute electricity with a load capacity of 5,760Wh. The results of the calculation of the overall cost required in the planning of a solar power plant for fish farming are Rp. 51,912,967
Analisis Pengaruh Beban Peralatan Bengkel Terhadap Intensitas Konsumsi Energi (IKE) Di PT.Buana Jaya Lestari Taufik Refyandra; Rahmaniar; Parlin Hambali
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.234

Abstract

This study analyzes the Energy Consumption Intensity (ECI) at the multi-story motorcycle workshop of PT. Buana Jaya Lestari in Medan to identify energy consumption characteristics and optimization potential. The research method used energy audits, direct measurements, and historical energy consumption data analysis over a 12-month period. The research object is a multi-story workshop with a total area of 1,850 m² distributed across three floors with different functions. The results of the study show a total ECI of 100.67 kWh/m²/year, which meets the national standard for commercial buildings with partial air conditioning. Energy consumption distribution per floor varies significantly: floor 1 (138.09 kWh/m²/year), floor 2 (99.84 kWh/m²/year), and floor 3 (48.00 kWh/m²/year). The air conditioning system dominates energy consumption with a contribution of 42.1%, followed by the lighting system (23.9%), workshop equipment (20.0%), and support systems (14.0%). The most influential factors are external ambient temperature (correlation 0.85) and the number of vehicles served (correlation 0.78). Energy savings potential reaches 13.4% or 24,878 kWh/year through optimization of the air conditioning system and retrofitting of the lighting system. Implementing energy conservation strategies can result in financial savings of Rp 37,317,000/year, a reduction in CO₂ emissions of 17.41 tons CO₂eq/year, and a decrease in the Energy Performance Index (EPI) to 87.25 kWh/m²/year.
ANALISIS PENGUJIAN KAPASITAS BATERAI 220 VDC UNTUK KEANDALAN PLTGU UNIT PEMBANGKITAN (UP) BELAWAN Wahyu Desmandra; Dino Erivianto; Rahmaniar
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.248

Abstract

This study aims to analyze the capacity of a 220 VDC battery used in the acoustic system of the Gas and Steam Power Plant (PLTGU) at the Belawan Generating Unit (UP). Batteries have an important role as a backup energy source in maintaining the continuity of the electrical operational system, especially in emergency conditions. The research method includes testing the battery capacity by measuring current, voltage, and discharge time under various load conditions. The test results show that battery capacity can vary depending on temperature, age, and previous charging conditions. The data obtained are explained to rotate the battery performance in supporting the PLTGU system. This conclusion provides recommendations for routine maintenance and battery replacement, to ensure the electrical system at the Belawan UP continues to function optimally. This research is expected to be a reference for PLTGU managers in improving the efficiency of the power plant system.
Kajian Perencanaan Pembangkit Listrik Tenaga Surya Untuk Budidaya Ikan Mhd. Ilyasa Lubis; Dino Erivianto; Rahmaniar
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.256

Abstract

Sukaraya Village, Pancur Batu District, has great potential in the fisheries cultivation sector. Activities such as aeration and water pumping require reliable and efficient energy sources. Solar Power Plants (PLTS) are a sustainable solution that can overcome these obstacles, considering the abundant availability of sunlight in this area. This study aims to design an optimal PLTS system to support fish farming operations in Sukaraya Village. The design is carried out by considering the power needs of the fisheries system, the potential of solar energy, and the efficiency and reliability of the PLTS components. Based on the research results, the PLTS components consist of 15 pcs of 100 Wp polycrystalline solar panels, a 100 A solar charge controller, 4 12V 150Ah batteries, and an inverter capacity of 7000A. The results of calculations in the PLTS planning can distribute electricity with a load capacity of 5,760Wh. The results of the calculation of the overall cost required in the planning of a solar power plant for fish farming are Rp. 51,912,967
Analisis Gangguan Rotor Pada Motor Filter Open Circulating Cooling Water (OCCW) Di Sistem Pendingin PLTU Pangkalan Susu Unit 1 Dan 2 Rudi Maulana; Rahmaniar
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.258

Abstract

The Open Circulating Cooling Water (OCCW) filter motor is a critical component in the power plant cooling system that functions to filter seawater before it is used to cool equipment such as the Heat Exchanger Close Circulating Cooling Water System, Hydrogen Generator Cooler, and Turbine Lubricating Oil Cooler.This study aims to analyze the rotor disturbance in the OCCW filter motor and develop solutions to improve the reliability of the cooling system.The analysis was conducted using predictive maintenance methods with vibration analysis techniques based on ISO 10816-3 standards, interviews with operators, direct observations, and operational documentation at the Pangkalan Susu Power Plant Unit 1 and 2. Vibration measurements showed abnormal values at bearing 1H (8.4 mm/s) and bearing 2H (7.5 mm/s), exceeding the ISO 10816-3 standard limit (≤7.1 mm/s) and falling into the "danger" category. Spectrum analysis identified damage to the rotor bearing with a dominance of Ball Pass Frequency Outer Race (BPFO) at 2.2 x order. Replacing the bushing with an SKF 6306-Z/C3 bearing successfully reduced the vibration values to the normal range (0.56-1.01 mm/s). The implementation of bearings as a replacement for the bushing proved effective in addressing the OCCW filter motor rotor disturbance, preventing unit derating of 80 MW, and saving financial losses of up to IDR 865,280,000 per occurrence with an investment cost of only IDR 7,970,000.
Analisis Pengaruh Beban Peralatan Bengkel Terhadap Intensitas Konsumsi Energi (IKE) di PT. Buana Jaya Lestari Taufik Refyandra; Rahmaniar; Parlin Hambali
Jurnal Nasional Teknologi Komputer Vol 5 No 3 (2025): Juli 2025
Publisher : CV. Hawari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61306/jnastek.v5i3.259

Abstract

This study analyzes the Energy Consumption Intensity (ECI) at the multi-story motorcycle workshop of PT. Buana Jaya Lestari in Medan to identify energy consumption characteristics and optimization potential. The research method used energy audits, direct measurements, and historical energy consumption data analysis over a 12-month period. The research object is a multi-story workshop with a total area of 1,850 m² distributed across three floors with different functions. The results of the study show a total ECI of 100.67 kWh/m²/year, which meets the national standard for commercial buildings with partial air conditioning. Energy consumption distribution per floor varies significantly: floor 1 (138.09 kWh/m²/year), floor 2 (99.84 kWh/m²/year), and floor 3 (48.00 kWh/m²/year). The air conditioning system dominates energy consumption with a contribution of 42.1%, followed by the lighting system (23.9%), workshop equipment (20.0%), and support systems (14.0%). The most influential factors are external ambient temperature (correlation 0.85) and the number of vehicles served (correlation 0.78). Energy savings potential reaches 13.4% or 24,878 kWh/year through optimization of the air conditioning system and retrofitting of the lighting system. Implementing energy conservation strategies can result in financial savings of Rp 37,317,000/year, a reduction in CO₂ emissions of 17.41 tons CO₂eq/year, and a decrease in the Energy Performance Index (EPI) to 87.25 kWh/m²/year.
Co-Authors Abu Hasan Adi Sastra Pengalaman Tarigan Aditya Adnan Aisah Akhyar, Chairil Amru Usman Aprida Hanum Arliansyah Arnela Nur Bahri, Halida Cut Dhea Fidela Edison Erna Isfayani Ernawati Jassin, Ernawati Erpandi Dalimunthe Eva Ayuzar Fakhri, Ade Falahuddin Farhan Kandarifa Fayza Yovania Br Sembiring Fidya Amira Nasution Fitrian Rizky Fuadi Hamdiah Hartati Bahar Heriyana Ikramuddin, Ikramuddin Ilham Ahmad Ilyasa Ramadhan INDAH PURNAMASARI Isfayani, Erna Jamil, Afwan Jullimursyida Kamrin Khadijah Vanny Khairawati Khairil Anwar Khairina AR Likdanawati Lince Bulutoding Lisnawati M. Subhan Mardhiah, Ainol Mariyudi Martha Aznury Martua Rahmat Maryudi Mhd Rizki Syahputra Mhd. Ilyasa Lubis Mirna Zahara Mita Darmayanti Mohd Heikal MUCHSIN Mufid, M. Nuzul Muhammad Ade Hendarso Muhammad Zaman Munandar Nadhila Isara Naufal Bachri, Naufal Nia Kurniawati Nofan Rullyanto Tinambunan Nur Faliza Nurainun Nurazizah Parlin Hambali Pristisal Wibowo Puja Ramadhani Putri Faradila Radha Chitta Vritti Rafifah Abu, Rahmah Rahmah Rafifah Abu Rahman Ambo Masse Raja Nasrul Fuad Ratna Wilis Razali, Ramadhan Rico Nur Ilham Ridwan, Wahyu Ristati Rizaldy, Adhy Robert Junaidi Rosa Zachrul Phonna Rudi Maulana Rusydi Saiful Bahgia Saiful Muchlis Saleh, Firman Samsul Bahri Sapna Biby Satria Darmawan Suriani Sutriani Syahbudin Syahbudin, Syahbudin Syamsul Bahri Syifa Thahira Yusral T. Edyansyah, T. Edyansyah Talita Ainun Nursalsabillah C Taufik Refyandra Wahyu Desmandra Wahyu Fuadi Wahyuddin Widia Kamisah M Br Tinambunan Widyana Verawati Siregar Widyana Verawaty Siregar Yulis Sayang Zulham Zuraidah Tharo