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All Journal Journal of Electrical Engineering and Informatics JESI : Journal of Engineering Service and Innovation
Aldiansyah Nur Alam
Universitas Negeri Makassar
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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DISEMINASI MODUL PEMBELAJARAN PLTS UNTUK MENINGKATKAN LITERASI ENERGI TERBARUKAN GURU SMK NEGERI 5 BARRU Aulia Rahmah; Dewi Triantini; Mudarris; Andi Rakhmat Baharuddin; Aldiansyah Nur Alam
Journal of Engineering Service and Innovation Volume 1, Issue 2 (Februari) 2026
Publisher : Fakultas Teknik

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Abstract

Pengabdian kepada masyarakat ini bertujuan untuk meningkatkan literasi energi terbarukan guru melalui diseminasi modul pembelajaran Pembangkit Listrik Tenaga Surya (PLTS) berbasis trainer di SMK Negeri 5 Barru. Modul yang digunakan merupakan perangkat keras pembelajaran yang dirancang untuk mendukung praktik instalasi, pengukuran, dan pemeliharaan sistem PLTS skala kecil. Kegiatan dilaksanakan melalui empat tahapan utama, yaitu observasi awal, perencanaan program, implementasi pelatihan dan pendampingan, serta evaluasi. Metode pelatihan menggunakan pendekatan Discourse–Demonstration–Practice yang memadukan pemaparan materi, demonstrasi penggunaan modul, dan praktik langsung oleh peserta. Hasil kegiatan menunjukkan adanya peningkatan pada aspek literasi kognitif dan teknis, kesiapan pedagogis dan media ajar, serta sikap dan persepsi guru terhadap energi terbarukan. Rata-rata skor awal peserta sebesar 49,3 menunjukkan bahwa kondisi awal guru masih memerlukan penguatan kompetensi. Setelah pelatihan rata-rata skor meningkat menjadi 86,7. Guru mampu memahami konsep dasar PLTS, mengoperasikan modul trainer, serta mengintegrasikan materi energi terbarukan dalam pembelajaran. Program ini terbukti efektif dalam meningkatkan kompetensi guru dan mendukung keberlanjutan pembelajaran berbasis energi terbarukan di SMK.
Mathematical Modeling of Household Electricity Use Based On Time Variation and Appliance-Use Intensity in Minasa Upa, Makassar, Indonesia Auliah Rahmah; Fitriyanty Dwi Lestary; Aldiansyah Nur Alam
Journal of Electrical Engineering and Informatics Vol. 4 No. 1 (2026): Journal of Electrical Engineering and Informatics
Publisher : Fakultas Teknik Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/jeeni.v4i1.15068

Abstract

This study develops a parsimonious and physically interpretable framework for describing household electricity use by combining appliance operating intensity, dominant temporal-use patterns, and an empirical consumption model. A quantitative survey was conducted among 93 households. Descriptive analysis characterized appliance operating intensity and dominant use periods, while the primary empirical model used 37 observations with explicitly recorded monthly electricity consumption in kWh. Candidate models were assessed using residual diagnostics, heteroskedasticity and normality tests, multicollinearity assessment, and five-fold cross-validation. The selected model was ln(E) = -5,3721 + 1,5946 ln(D), where E is monthly electricity consumption and D is installed power. The regression explained 57,23% of variance on the logarithmic scale (adjusted R² = 0,560). After smearing correction and back-transformation, the observed–predicted R² was approximately 0,679. The model showed no statistical evidence of heteroskedasticity (Breusch-Pagan p = 0,960) or non-normal residuals (Jarque-Bera p = 0,935), with VIF = 1,00. Five-fold cross-validation produced R² = 0,560, MAE = 195,22 kWh, and RMSE = 248,85 kWh. The study contributes a validation-oriented two-layer framework that separates a physical appliance-intensity formulation from an empirical household consumption model. This design preserves interpretability while avoiding unverified reconstruction of kWh from billing values and demonstrates how parsimonious modeling can remain useful when field data are heterogeneous and high-resolution smart-meter records are unavailable.
Energy-Consistent dq Modeling of Synchronous Generator Dynamics: Electrical and Mechanical Parameter Effects Mudarris Mudarris; Aldiansyah Nur Alam
Journal of Electrical Engineering and Informatics Vol. 4 No. 1 (2026): Journal of Electrical Engineering and Informatics
Publisher : Fakultas Teknik Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/jeeni.v4i1.15120

Abstract

This study aimed to determine how stator resistance, rotor saliency, mechanical torque, viscous damping, and terminal voltage influence the transient response of a synchronous generator, while avoiding conclusions based on inconsistent power conventions or an insufficient observation period. An energy consistent, three state dq model with outward generator currents and constant rotor flux was derived. Ten illustrative scenarios were computed over five seconds using an adaptive Runge–Kutta method. Independent solver comparison, an integrated energy balance, analytical equilibrium calculation, and local eigenvalue analysis were used to check the results. Increasing stator resistance from 0.2 to 0.8 Ω reduced the sampled peak current from 172.93 to 134.68 A. Increasing mechanical torque from 100 to 200 N m increased the five second rotor speed from 178.77 to 339.12 rad/s. Raising terminal q axis voltage from 150 to 300 V increased peak current from 115.58 to 202.85 A. All scenarios remained accelerating at five seconds; the baseline acceleration was 48.23 rad/s². The maximum normalized energy discrepancy was 1.08 × 10⁻⁹. The study integrates five parameter investigations within one checked model and distinguishes finite horizon behavior from formal equilibrium. Its contribution is a reproducible diagnostic framework for generator modeling rather than a claim of experimentally validated machine performance.
Co-Authors Abdul Muis Mappalotteng Andi Rakhmat Baharuddin Aulia Rahmah Auliah Rahmah Darmawang, Darmawang Dewi Triantini Fitriyanty Dwi Lestary Mudarris Mudarris Mudarris Muhammad Yusuf Mappeasse