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All Journal International Journal of Applied Power Engineering (IJAPE) Jurnal Edukasi Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi JURNAL NASIONAL TEKNIK ELEKTRO PROSIDING SEMINAR NASIONAL CENDEKIAWAN Jurnal Teknik Jurnal Pengabdian UntukMu NegeRI SainETIn Jurnal Elementer (Elektro dan Mesin Terapan) Dinamisia: Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Pakar TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Jurnal Inovasi Penelitian Teknomekanik Prosiding Konferensi Nasional PKM-CSR Journal of Community Service Fleksibel: Jurnal Pengabdian Kepada Masyarakat Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Metrik Serial Humaniora dan Sains Electrical Today
Hamzah Eteruddin
University of Lancang Kuning
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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Performance and Techno-economic Analysis of a 1.82 kWp Rooftop PV System in the Tropical Climate of Indonesia: A Simulation vs Reality Approach Rifaldi Wahyu Santoso; Dionova, Brainvendra Widi; Hamzah Eteruddin; Kalvin Saputra; Oo Abdul Rosyid; Fariz Maulana Rizanulhaq; Muhammad Irsyad Abdullah
JURNAL NASIONAL TEKNIK ELEKTRO Vol 15, No 1: March 2026
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v15n1.1427.2026

Abstract

The utilization of renewable energy through rooftop photovoltaic (PV) systems serves as a strategic solution for mitigating climate change; however, their performance in tropical climates often exhibits a deviation between theoretical predictions and field reality. This study aims to evaluate the technical performance and economic viability of an on-grid 1.82 kWp rooftop PV system in Indonesia. The research employs a comparative quantitative approach by validating PVsyst simulation results against actual measurement data recorded from April to July 2024. The findings indicate a simulation overestimation, where actual energy production was 30.3% to 40.5% lower than PVsyst projections. A significant discrepancy was also observed in the Performance Ratio (PR), with the actual PR reaching only 55-59%, substantially lower than the simulated 81-82%. Despite these technical inconsistencies, the economic analysis confirms the project's financial feasibility. Under a 5.25% interest rate scenario, the study yielded a Net Present Value (NPV) of IDR 15.88 million, a Benefit-Cost Ratio (BCR) of 1.50, a Payback Period of 9.8 years, and a Levelized Cost of Electricity (LCOE) of IDR 974.88/kWh, more competitive than the national utility (PLN) tariffs. In conclusion, although tropical environmental factors such as high temperatures and dust accumulation reduce technical efficiency, rooftop PV investment in Indonesia maintains strong profitability and remains viable for implementation.
Experimental investigation of palm oil methyl ester nanofluid as a liquid insulating material Yusri Jumat; Yanuar Z. Arief; Hendri Masdi; Valentine M. A. A. Jabu; Sharifah M. W. Masra; Nurul I. Hashim; S. K. Sahari; N. Junaidi; S. Rufus; Hamzah Eteruddin; Sinka Wilyanti
Teknomekanik Vol. 9 No. 3 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i3.52872

Abstract

This study evaluates Palm Oil Methyl Ester (POME) as a potential base fluid for transformer insulation, enhanced with Titanium Dioxide (TiO₂) nanoparticles. The research aims to assess the dielectric strength and physicochemical properties of TiO₂-POME nanofluids at two concentrations (0.05 g/L and 0.10 g/L) and compare them with pure POME. The breakdown voltage (BDV) test was conducted before and after thermal ageing to determine how the nanofluid's dielectric strength changes over time. Results showed that both nanofluid samples had higher BDV values than pure POME, with the 0.05 g/L sample increasing from 19.27 kV to 25.85 kV and the 0.10 g/L sample showing the most significant improvement, with a BDV of 33.17 kV. Ageing caused a slight decrease in BDV, but the values remained higher than those of the base fluid (15.40 kV for aged pure POME), with the 0.05 g/L and 0.10 g/L samples maintaining averages of 20.68 kV and 24.44 kV, respectively, suggesting improved insulation performance. The kinematic viscosity of pure POME was 8.85 cSt, while the 0.05 g/L and 0.10 g/L TiO₂ nanofluids showed values of 9.09 cSt and 9.52 cSt, respectively, with all the samples falling within the acceptable range of 3-12 cSt specified by IEC 60296 for transformer insulating oils. The addition of TiO₂ slightly increased viscosity, more noticeably at 0.10 g/L. FTIR analysis indicated that the chemical structure of the fluid remained stable after ageing and nanoparticle addition.
Analisis Pengereman Dinamik Motor Brushless Direct Current Pada Mobil Listrik Josua Perjuangan Siregar; David Setiawan; Hamzah Eteruddin
Electrical Today Vol 1 No 02 (2025): Electrical Today: December 2025
Publisher : Asosiasi Material Terapan dan Teknologi (AMTT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65794/J.Electo.1.02.71-78

Abstract

Artikel ini bertujuan untuk menganalisis pengaruh variasi nilai tahanan pada sistem pengereman dinamis terhadap kinerja penghentian dan suhu motor Brushless DC (BLDC) pada mobil listrik. Tiga nilai tahanan eksternal (11 Ω, 15 Ω, dan 18 Ω) diuji pada empat tingkat pembukaan pedal akselerator (25%, 50%, 75%, 100%) menggunakan beban 65 kg di lintasan datar. Parameter yang diukur meliputi waktu henti, jarak henti, dan suhu motor; setiap kondisi diuji ulang lima kali dan dianalisis menggunakan nilai rata-rata. Hasil menunjukkan bahwa penurunan nilai tahanan meningkatkan arus dan torsi pengereman, sehingga waktu dan jarak henti berkurang, disertai penurunan suhu motor. Pada pedal 100%, tahanan 11 Ω menghasilkan waktu henti terpendek (5,75 s), jarak henti terpendek (20,31 m), dan suhu terendah (41,7 °C) dibanding nilai tahanan lainnya. Temuan ini menegaskan bahwa pemilihan nilai tahanan rendah dengan kapasitas daya yang memadai dapat meningkatkan efektivitas pengereman dinamis sekaligus mengurangi beban termal pada motor BLDC.
Co-Authors ', Padil Abdullah Asuhaimi Mohd Zin Abdulrazaq, Mohammed N. Abrar Tanjung Abrar Tanjung Abrar Tanjung Achmad Nur Aliansyah Agus Bari Saptono Ahmad Kafrawi Nasution Aidil Rahman Ambar Tri Ratna Ningsih Ambar Tri Ratnaningsih Anto Ariyanto Anugrah, Andri Van Arief, Yanuar Z. Arif Ilham Rafi Cahyo Arisa Olivia Putri Arlenny Arlenny Atmam Atmam atmam atmam atmam atmam, atmam Belyamin Belyamin Brainvendra Widi Dionova Darmansyah David Setiawan David Setiawan David Setiawan David Setiawan, David Dwiana Hendrawati Edy Rahmad Septiadi Elvira Zondra, Elvira Erisman Erisman Fariz Maulana Rizanulhaq Feblil Huda Febrizal Ujang Guntoro, Guntoro Hari Asman Hari Putra Hari Hebby Pradatama Sitepu Hendri Masdi Indra Gunawan Isna Rahma Dini Joel Veryanto Hutagaol Josua Perjuangan Siregar Josua Sitompul Juswandi Kalvin Saputra Latifa Siswati Legenda Prameswono Pratama M. Ridwan Masnur Putra Halilintar Masnur Putra Halilintar Monice Monice Monice Monice Monice Muhammad Idris Muhammad Irsyad Abdullah Muhammad Ridha Fauzi Mutamalikin Mutamalikin N. Junaidi Nurul I. Hashim Octary, Wellington Oo Abdul Rosyid Padil Panca Putra Prima Hutagalung Rahmanda, Ibnu Dwi Rifaldi Wahyu Santoso Rina Novia Yanti Rio Alfredo Sinaga Rivo Jefysa Rony, Zahara Tussoleha S. K. Sahari S. Rufus Santoni, Edi Satoni, Edi Sharifah M. W. Masra Sinka Wilyanti Subarta, Budi Suwitno Syaputra Siregar, Julfadli Usaha Situmeang Valentine M. A. A. Jabu Yanuar Z. Arief Yanuar Z. Arief Yolnasdi, Yolnasdi Yusri Jumat