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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Amplifier: Jurnal Ilmiah Bidang Teknik Elektro dan Komputer Emitor: Jurnal Teknik Elektro JES-TM Social and Community Service
Herawati, Afriyastuti
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Rancang Bangun Pembangkitan Generator Marx 10 Tingkat pada Uji Kapasitor 220 pF dan Lightning Protector Rodiah, Yuli; Putri, Nilda Tri; Anggraini, Ika Novia; Herawati, Afriyastuti; Rizki, M.
JURNAL AMPLIFIER : JURNAL ILMIAH BIDANG TEKNIK ELEKTRO DAN KOMPUTER Vol. 12 No. 2 (2022): Amplifier November Vol. 12, No. 2 2022
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jamplifier.v12i2.24945

Abstract

The Marx generator circuit is an impulse voltage multiplier that is used to represent lightning overvoltage and switching overvoltage. In this research, a 10-level Marx Generator impulse generator design was carried out by varying the distance between the spark gaps of 2.5mm, 5.0mm, 7.5mm, and 10.0mm and the test load was a 220pF capacitor and a lightning protector. The results of the design and simulation of the 10-level Marx Generator produce an impulse voltage according to the IEC 60060-1 lightning impulses standard, which is 20.20kV with a wavefront and tail time of 2.29 µs and 52.3 µs. The test results for the 220pF capacitor load at a distance of 2.5 mm, the resulting voltage is 23.5 kV with a wavefront and tail time of 1.7 µs and 25 µs, while the lightning protector test load produces a voltage of 24 kV, with a wavefront and tail time of 2.1 µs and 43 µs
Photovoltaic System Performance Analysis with the Application of Hybrid Maximum Power Point Tracking Based on Incremental Conductance (INC) Oktavia, Sari; Herawati, Afriyastuti; Satria Rinaldi, Reza; Rodiah, Yuli
Emitor: Jurnal Teknik Elektro Vol 25, No 2: July 2025
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v25i2.11976

Abstract

It requires work to maximize photovoltaic (PV) power output in order to maximize solar panel input to the battery and avoid overcharging or overdischarging. A technique to determine the value of the maximum power point (MPPT) is required in order to enhance the performance of photovoltaic systems and guarantee that solar panels run at the MPP. In the application of Standard Test Conditions (STC) in comparing the application without using MPPT, INC-based MPPT, and GWO-INC MPPT, it is found that to achieve the maximum power point of the panel, it is good to use the hybrid MPPT GWO-INC application, which gets the maximum power point tracking efficiency value of 64.34% and solar panel efficiency of 12.86% compared to without using MPPT which only gets the maximum power point tracking efficiency value of 52.9% with panel efficiency of 10.58%.
Design of an Off-Grid Solar PV System for a Renewable Energy-Based Home in Bengkulu Rinaldi, Reza Satria; Herawati, Afriyastuti; Anggraini, Ika Novia; Helmizar, Helmizar
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 3 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i3.449

Abstract

Bengkulu Province has a solar energy potential of 3,475 MW, with an average daily solar irradiance duration of 5.9 hours in 2022 and 8.3 hours in 2023. This study designs an off-grid solar PV system for a renewable energy-based home (REH) model in the coastal area of Bengkulu City. The REH is a home with electrical energy independence that utilizes renewable energy systems to generate electricity. This study focuses on the REH powered by solar energy, intended for a modest home with a power capacity equivalent to a 900 VA PLN customer classification. The data on solar energy potential in the coastal area of ​​Bengkulu City used in this study is from the Global Solar Atlas. The data analysis confirmed the need for the REH model to generate electricity from solar energy, requiring 12 units of 120Wp PV modules in a PV array. An appropriate solar charge controller for this REH model is the MPPT SCC with a rating of 48 V 30 A. Based on the selected PV modules and the daily load of the REH model, the required 48 V battery capacity is 300 Ah, and the PSW Inverter 2,000 VA 48 V.
Optimization of Clean Water Supply through Community Assistance in Preparing the Budget Plan for Domestic Water Channel Rehabilitation in Kelindang Atas Village Claudia, Rany; Apriansyah, Yudi; Herawati, Afriyastuti; Arfan, Muhammad; Habibullah, Natsir
Journal of Social and Community Service Vol. 4 No. 1 (2025): Maret 2025
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestmc.v4i1.230

Abstract

The provision of adequate clean water is a form of fulfilling the basic needs of the community, which is very important for supporting good health and quality of life. Kelindang Atas Village still has problems in the management and rehabilitation of domestic water channels. This community service initiative aims to optimize clean water supply by assisting the community in developing a Cost Estimate Plan (CEP) for the rehabilitation of domestic water supply systems. The methods used include observing the condition of water supply systems, conducting outreach on CEP development, and facilitating group discussions with village residents as partners. The results of the community service initiative demonstrate an increase in community understanding of the planning and budgeting processes for rehabilitation, as well as the development of a realistic and field-appropriate RAB. Resulted in a 60% increase in budgeting accuracy as measured by alignment with field conditions. Active community involvement in the RAB development process through guidance is the key to the success of optimizing clean water supply in Kelindang Atas Village.
Co-Authors Agung Santoso, Agung Andi Nugraha Anggara, Sandy Anggraini, Ika Novia Apriansyah, Yudi Claudia, Rany Daratha, Novalio Habibullah, Natsir Handayani, Yanolanda Suzantry Helmizar Irnanda Priyadi Muhammad Arfan Nilda Tri Putri Oktavia, Sari Pakpahan, Roby Janaris Pamungkas, Adityo Putra, Ripo Utama Reza Satria Rinaldi Rizki, M. Rodiah, Yuli Rosa, M. Khairul Amri Rosa, Muhammad Khairul Amri Saputra, Muhammad Alvin Simarmata, Elsara Krysti Surapati, Alex