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All Journal Elektron Jurnal Ilmiah Tadris: Jurnal keguruan dan Ilmu Tarbiyah Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Unnes Science Education Journal JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) JURNAL PENDIDIKAN MIPA Gravity Edu : Jurnal Pembelajaran dan Pengajaran Fisika Indonesian Journal of Natural Science Education Jurnal Abdi Masyarakat Indonesia Journal of Applied Science and Advanced Engineering
Yusiran Yusiran, Yusiran
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Humanities Astronomy Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Perancangan dan Analisis Tekno-Ekonomi PLTS Atap On-Grid Gedung Workshop 7 Politeknik Negeri Batam Menggunakan Software Pylon dan PVsyst Yusiran, Yusiran; Ewaldo, Faieziel; Hasnira, Hasnira; Kita, Lalu Kaisar Wisnu
Elektron : Jurnal Ilmiah Vol 17 No 1 (2025): Volume 17 Nomor 1 Tahun 2025
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/eji.17.1.581

Abstract

Abstrak—Energi listrik sangat penting bagi kehidupan sehari-hari, seperti penerangan, transportasi dan komunikasi. Indonesia beruntung memiliki potensi energi terbarukan yang sangat besar, dengan total kapasitas 432 GW, sekitar 7 hingga 8 kali lebih besar dari kapasitas pembangkit listrik saat ini. Dengan meningkatnya kesadaran akan dampak lingkungan dan perlunya mengurangi emisi karbon, peralihan ke energi terbarukan menjadi prioritas. Energi surya, misalnya, memiliki potensi terbesar di Indonesia dengan kapasitas sekitar 207,8 GW, diikuti oleh energi hidro sebesar 75 GW, angin 60,6 GW, biomassa 32,6 GW, dan panas bumi 23,9 GW. Sistem PLTS atap berkapasitas 64 kW, diproyeksikan menghasilkan 80.358 kWh per tahun. Hasil simulasi pada Pvsyst menunjukkan Performance Ratio sebesar 76,4% menjadikan sistem ini layak secara teknis. Secara ekonomis, biaya energi (LCOE) sebesar Rp 878,46/kWh, dengan hasil investasi positif melalui Payback Period, NPV, PI, IRR, dan ROI. Oleh karena itu, perancangan sistem PLTS di Gedung Workshop 7 dinyatakan layak untuk dilanjutkan dan dikembangkan.
Performance Optimization of Battery Balancing System Based on Multiwinding Transformer and Single Inductor with Fuzzy Logic Control Method Yusiran, Yusiran; Leksono, Edi; Haq, Irsyad Nashirul; Ayumurti, Andini Jinggan
Journal of Applied Science and Advanced Engineering Vol. 3 No. 2 (2025): JASAE: September 2025
Publisher : Master Program in Mechanical Engineering, Gunadarma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59097/jasae.v3i2.60

Abstract

In this study, a modular battery balancing topology based on a single inductor and multi-winding transformer is proposed. In particular, the voltage equalization topology based on this modular balancer consists of cell-level equalization based on a multi-winding transformer and module-level equalization based on a single inductor. A control algorithm based on fuzzy logic (FLC) is applied to the module-level balancer with the difference between the module voltage and the module average voltage being used as the input variable and the duty cycle as the output variable. Meanwhile, the cell-level equalization utilizes a fixed duty cycle (FDC) control mechanism. The balancing process between cell and module level is done alternately so that this control method can be used on non-uniform transformers. The balancing model and FLC design was created in Matlab/Simulink 2021a and experiments using 4 cells LG HG2 18560 3000 mAh battery were carried out to verify the performance of the balancing system. The experimental results show that the FLC method can save the balancing time between modules by 31.26% compared to the FDC method. Furthermore, the proposed control system is proven to optimize the energy transfer which can reach zero voltage gap (ZVG) below 5 mV with a relatively high efficiency around 86.95%..
Enhancing Middle School Students’ Conceptual Understanding in Science through the Anticipation Guide Strategy Yus'iran; Siswanto; Subhan, Muhammad; Amirul, Muhamad Ardi
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 11 No 1 (2026): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v11i1.28578

Abstract

Persistent deficits in students’ conceptual understanding of science, particularly within Indonesian secondary education, underscore the urgent need for evidence-based instructional interventions that transcend conventional, transmission-oriented pedagogical practice. This study examined whether the implementation of the Anticipation Guide (AG) strategy produces a significantly greater improvement in seventh-grade students’ conceptual understanding of science compared to conventional lecture-based instruction. A quasi-experimental nonequivalent pretest–posttest control group design was adopted. Fifty-two seventh-grade students from SMP Negeri 1 Geyer were assigned to an experimental class (n = 26; AG-based instruction) and a control class (n = 26; conventional lecture-based instruction). Both classes studied the topic of Earth and the Solar System over four 80-minute sessions. Conceptual understanding was assessed using a validated 25-item multiple-choice instrument with a KR-20 reliability coefficient of 0.78. The Shapiro–Wilk test confirmed non-normal score distributions; accordingly, the Wilcoxon signed-rank test was employed for inferential analysis. Normalized Gain (N-Gain) scores were computed to quantify the practical magnitude of pre-to-post improvement. The experimental class demonstrated a statistically significant pre-to-post improvement (Z = −4.489, p < 0.001; N-Gain = 0.436, Moderate category) alongside a pronounced reduction in score variance (34.46 → 10.15). No significant improvement was observed in the control class (Z = −1.003, p = 0.317; N-Gain = 0.012, Low category). The AG strategy, by activating prior knowledge, scaffolding evidence-based evaluation of scientific texts, and reinforcing conceptual consolidation through post-reading reflection, constitutes a significantly more effective instructional approach than conventional direct instruction for promoting conceptual understanding in secondary science education. The study contributes empirical evidence to the limited body of research on reading-based epistemic strategies in under-resourced secondary school contexts.
Co-Authors Aminuyati Amirul, Muhamad Ardi Andriani, Vivi Andriani Asriyadin Asriyadin Atabiq, Fauzun Ayumurti, Andini Jinggan Dian Permatasari Edi Leksono Ewaldo, Faieziel Fatimah Fatimah Hafidah Nurul Fikri Haq, Irsyad Nashirul Hasnira Hasnira Irwan, A. Nurfajri Lalu Kaisar Wisnu Kita M F Fajarudin Muhammad Subhan Mukhamad Najib Nining Wahyuni Pangestu, Syukur Dwi Febri S Siswanto Sharif Hidayatullah Siswanto Siswanto Siswanto Siswanto Siswanto Subali Subali Surya Gumilar Suswati, Lis