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All Journal IPTEK The Journal for Technology and Science Journal of Mathematical and Fundamental Sciences Jurnal Teknologi Elektro E-JOINT (Electronica and Electrical Journal Of Innovation Technology) Jurnal Pustaka Data : Pusat Akses Kajian Database, Analisa Teknologi, dan Arsitektur Komputer Engineering Science Letter Newton-Maxwell Journal of Physics Electrician : Jurnal Rekayasa dan Teknologi Elektro AMMA : Jurnal Pengabdian Masyarakat Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Greensusmater
Amrina Mustaqim
Engineering Physics Department, Institut Teknologi Sumatera Jl. Terusan Ryacudu, Way Huwi, Lampung 35365, Indonesia
Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics

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Modelling Optimisation of Distributed PV-Battery Charge and Discharge Modes Using Systems for Improved Sustainable Energy Management Syamsyarief Baqaruzi; Amrina Mustaqim; Ali Muhtar; Muhammad Rizky Hikmatullah; Rahmat Fadhilah; Andika Munandar; Edo Kharisma Army; Setiadi Wira Buana; Rizqi Wahyudi; Muhammad Rifqi Dwi S
Engineering Science Letter Vol. 5 No. 01 (2026): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.esl.001508

Abstract

This study examines the simulation of charge and discharge modes of lithium-ion batteries in a distributed photovoltaic system using MATLAB/ Simulink modeling. The objective is to analyze the integration of solar panels with battery-based energy storage systems to optimize performance and efficiency. The methodology involves mathematical modeling of photovoltaic cells based on p-n junctions, with key parameters such as temperature (15–30°C) and irradiance (1000 W/m²), along with the design of a Solar Charge Controller (SCC) to regulate energy flow. Simulations were conducted on four 150 W photovoltaic panels under varying environmental conditions, integrated with parallel-connected 12 V 250 Ah batteries. Results show a system efficiency of 87% at 25°C and 1000 W/m² irradiance, with panel output voltages aligning with mathematical equations (0.15 A error). Discharge mode analysis, accounting for system losses (inverter 5%, SCC 3%, wiring 2%), confirms the battery can supply a 5 Ω load for approximately 2.00 hours at 45% State of Charge (SOC), representing a 9.5% reduction from the ideal calculation. Simulations also compare SCC performance using DC and photovoltaic sources, demonstrating consistency in energy flow regulation. Validation results indicate the Simulink model’s accuracy in representing real-world characteristics, though MATLAB code simulations exhibit higher precision. The study highlights the importance of SCC control and SOC management to enhance battery lifespan and stability in renewable hybrid energy systems. Implications include potential applications.
Simulasi Performa Mekanik Jarum Mikro Berbahan Tembaga Menggunakan Perangkat Lunak ANSYS Retno Maharsi; Aidah Rohmah; Tata Widyawasih; Damianus Dinata Putra; Sabrina Milesa; Doni Bowo Nugroho; Amrina Mustaqim
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 19 No. 3 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v19n3.2858

Abstract

Microneedles are a minimally invasive transdermal technology that has been widely explored in biomedical applications. Copper (Cu) is a promising material for microneedles due to its favorable mechanical properties and inherent antimicrobial effects. However, numerical studies on the structural performance of copper microneedles remain limited. This study aims to evaluate the mechanical response of solid copper microneedles using finite element analysis (FEA) in ANSYS Workbench. A 3D conical microneedle model with a height of 1000 µm was subjected to external pressures ranging from 400 to 1000 MPa. Four key parameters—total deformation, equivalent stress, maximum principal stress, and structural error—were assessed under two mesh densities (coarse and fine). Simulation results indicate that the fine mesh yields more accurate and stable stress and deformation distributions compared to the coarse mesh. Additionally, the fine mesh better captures peak stress concentrations, which are critical for evaluating microstructural failure. These findings underscore the importance of mesh selection in numerical simulations and provide a foundation for the preliminary design of copper-based microneedles for medical applications.
Co-Authors Adhitya Gandaryus Saputro Afdi, Rozi Afit Miranto Ahmad Nuruddin Aidah Rohmah Ali Muhtar Andika Munandar Arifin Luthfi Maulana Asmar Asmar Buana, Setiadi Wira Christio Revano Mege Damianus Dinata Putra Doni Bowo Nugroho Drantantiyas, Nike Dwi Grevika Edo Kharisma Army Eka Nurfani Fadjar Fathurrahman Ferizandi Qauzar Gani Fikar Tsaqib Adnan Friska Hasugian Gde KM Atmajaya Gde Komang Atmajaya Ginting, Listra Yehezkiel Habibi, Fathan Akbar Nur Handani, Hesti Wahyu Harahap, Al Barra Hermawan Kresno Dipojono Hesti Wahyu Handani Iqbal Damara, Muhammad Koko Friansa Listra Yehezkiel Ginting Maharsi, Retno Mohamad Samsul Anrokhi Mohammad Kemal Agusta Muhammad Asrofi Muhammad Rifqi Dwi S Muhammad Rizky Hikmatullah Muhammad Rizky Hikmatullah Nike Dwi Grevika Drantantiyas Putty Yunesti Rahmat Fadhilah Retno Maharsi Retno Maharsi Rizqi Wahyudi Sabar Sabar Sabhan Kanata Sabrina Milesa Sefrani IG Siregar Septia Eka Marsha Putra Simatupang, Daniel Hasiholan Suaif, ahmad Syamsyarief Baqaruzi Syamsyarief Baqaruzi Syauqi Abdurrahman Abrori Tata Widyawasih Virgiawan Listanto Rahagung Yeli Krisdayanti Lature