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All Journal Jurnal Teknologi Elektro Jurnal Elementer (Elektro dan Mesin Terapan) JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Wahana : Tridarma Perguruan Tinggi Journal of Engineering and Scientific Research (JESR) Jambura Journal of Electrical and Electronics Engineering Jurnal Riset Rekayasa Elektro Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Journal of Applied Electrical Engineering BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal JEETech BEES: Bulletin of Electrical and Electronics Engineering JURNAL POLI-TEKNOLOGI Pelita: Jurnal Pengabdian kepada Masyarakat
Reza Sarwo Widagdo
Department Of Electrical Engineering, Universitas 17 Agustus 1945 Surabaya, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Nursing Public Health Social Sciences Transportation Veterinary Other

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Performance Analysis of Three Phase Cascaded H-Bridge Multilevel Inverter Design for Solar Power Plant Optimization Widagdo, Reza Sarwo; Slamet, Puji; Hariadi, Balok
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 1 (2025): Januari - Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i1.28035

Abstract

An inverter is an electrical device that converts direct current (DC) into alternating current (AC). Typically, a standard inverter operates at three voltage levels: +Vdc, -Vdc, and 0. However, a multilevel inverter consists of several smaller inverters connected in a series to produce multiple voltage levels at the output. The primary advantage of this type of inverter lies in its ability to produce a much lower harmonic distortion compared to traditional, non-multilevel inverters. Additionally, the switching components of a multilevel inverter operate at lower frequencies, which makes it more suitable for highpower applications. This research focuses on a threephase cascaded multilevel inverter, specifically generating output waveforms with up to seven levels. The study involves conducting experiments using RL loads, to observe how these variations affect the output waveforms and their harmonic distortions. The result, THDi values are much lower, with the 3rd harmonic contributing 0.02%, the 5th contributing 0.006%, the 7th contributing 0.004%, the 9th contributing 0.002%, the 11th contributing 0.002%, and the 13th harmonic contributing just 0.001%. These results suggest that the voltage harmonic more significant harmonic distortion than the current, particularly at the 13th harmonic order. This increase highlights the effect of inductive loads on the performance of the inverter, particularly in terms of harmonic content. These findings are crucial for optimizing multilevel inverters in practical applications, ensuring improved performance and efficiency.
Solar Panel Education as a Renewable Energy System for Students of SMAN 20 Surabaya Widagdo, Reza Sarwo; Slamet, Puji; Hariadi, Balok; Hartayu, Ratna; Wardah, Izzah Aula
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 1 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i1.483

Abstract

Introduction of Solar Panels as a Renewable Energy System for high school students in Surabaya City. In particular, the city of Surabaya can be an effort to support the realization of the Sustainable Development Goals (SDGs) program. The team has held online discussions with partners, namely SMAN 20 Surabaya to carry out the introduction of solar panels as a renewable energy system to students at SMAN 20 Surabaya. The purpose of community service is to socialize the use of solar power plants through learning activities (education) and solar power plants training for school students and teachers. The method used in this activity is divided into three stages. In the first stage, field observations were carried out to find problems related to the availability of electrical energy in schools. In the second stage, the implementation of community service includes the delivery of solar panel material with lectures, demonstrations, and the design of solar power plants systems at schools. In the third stage, it is an evaluation or feedback stage by giving questionnaires to participants. The results of this community service activity provide information on understanding solar panels and batteries in the good category. Practical activities need to be taught to student, so solar power plants teaching aids are needed at the school. The team made an educational activity for students, namely a demo of converting solar energy into electrical energy. The implementation of this community service has been carried out well.
BUMDes Development Program by Creating Packaging Design and Marketing Through Online Stores to Increase Economic Value in Balongmojo Village, Mojokerto Widagdo, Reza Sarwo; Ardianik, Ardianik; Hartayu, Ratna; Setyadjit, Kukuh; Kusmiyati, Kusmiyati
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i2.503

Abstract

Achieving social welfare in all aspects is one of Indonesia's national goals. The village, as the smallest unit in the structure of society, is often neglected in efforts to achieve this goal. Therefore, regulations were created to address village issues in the hope of improving their welfare. One of the aspects regulated in village regulations is BUMDes, an entity that has a significant role in improving the village economy. This article will discuss the role of BUMDes in advancing the economy, with a case study of Balongmojo Village. Several work programs are proposed, including diversifying the production of kerupuk kelor, creating attractive packaging designs using Canva, and utilizing sugarcane bagasse waste to make it marketable. The results show that BUMDes can be effective in improving the economy of Balongmojo Village by developing local entrepreneurs through strong branding strategies and product market expansion.
Assessment of Grounding System to Reduce Potential Electrical Disturbances at Haji Regional General Hospital, East Java Province Widagdo, Reza Sarwo; Budiono, Gatut; Tauladan, Imam Suri; Tasmono, Hadi; Nababan, Wendi Antonius S
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 3 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i3.517

Abstract

The grounding system in the Hospital is used to overcome when there is a touch voltage and step voltage on the transformer and also other equipment installed on the transformer. The process carried out in this study was carried out by measuring the grounding and processing the data used to determine the size and smallness of the touch voltage and Step voltage. The results of the calculation of the grounding resistance in the hospital obtained a value of 5,056 ? which can cause a touch voltage with a value of 1014 V. The step voltage in humans weighing 50 Kg produces a value of 962,8 V and the step voltage for humans weighing 70 Kg produces a value of 1299 Volts. With the results of the values ??obtained, that the value has been in accordance with the standard of Step voltage based on IEEE 80-2013 with a value of 3,140 V with a duration of disturbance of 0,5 seconds.
Analysis of Losses Due to Load Unbalance in a 2000 kVA Transformer at Supermall Mansion 2 Tower Tanglin Surabaya Reza Sarwo Widagdo; Aris Heri Andriawan
Journal of Engineering and Scientific Research Vol. 5 No. 2 (2023)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v5i2.144

Abstract

The load unbalance causes a neutral current, the current flowing in the neutral conductor will cause an increase in losses in the transformer. The greater the losses incurred, the efficiency and reliability of the transformer will decrease. Based on this, a study was conducted on analyzing the losses on distribution transformers at Supermall Mansion 2 Tower Tanglin which aims to determine the percentage value of transformer loading, the value of transformer imbalance, the value of transformer losses, and the value of transformer efficiency. This is done so that the value of the installed transformer does not exceed the applicable SPLN value. During the measurement, it was found that the percentage value of the transformer loading was 38.88% during the daytime and 48.89% at night (maximum SPLN 80%, minimum 40%). The load unbalance value is 11.66% during the daytime and 10.33% at night (SPLN is categorized as good if < 10%). Copper losses (Pcu) are 91.3 kW during the daytime and 94.2 kW at night. The value of losses due to neutral currents is 0.134 kW with a percentage of 0.0071% during the daytime and 0.173 kW with a percentage of 0.0090% at night. The percentage of the current value in the neutral conductor is 26.36% during the day and 24.04% at night (SPLN is categorized as good if < 20%).
Implementation of Solar Cell and Photocell-Based Street Lighting in Gaprang Village, Blitar Widagdo, Reza Sarwo; Ardianik; Puji Slamet; Aris Heri Andriawan; Tauladan, Imam Suri; Balok Hariadi
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 4 (2025): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The increasing demand for sustainable energy sources has encouraged the application of renewable technologies in rural infrastructure, particularly in public lighting systems. This study focuses on the implementation of solar cell and photocell-based street lighting in Gaprang Village, Blitar Regency, as a solution to reduce dependency on conventional electricity and to enhance energy efficiency. The system utilizes photovoltaic modules as the primary energy source to convert solar radiation into electrical power, which is stored in batteries and subsequently used to supply street lamps during nighttime. In addition, the integration of photocell sensors enables automatic control of the lighting system by detecting environmental illumination levels, ensuring that the lamps operate only when required. The design and installation process involved site surveying, load estimation, solar panel configuration, and the application of photocell-based automation. The results demonstrated that the system provided reliable illumination for rural roads, significantly lowering operational costs and minimizing environmental impact compared to traditional grid-powered lighting. Furthermore, the use of photocells improved energy management by preventing unnecessary power consumption during daylight. The activity will take place in August 2025, with a focus on installation in Gaprang Village. The results of the activity include community understanding of the benefits and maintenance of street lights, as well as the implementation of solar cell-based technology. The conclusion states that this project can provide a positive and sustainable impact, empowering communities and creating efficient infrastructure that aligns with renewable energy initiatives.
Co-Authors Aris Heri Andriawan Aris Heri Andriawan Aris Heri Andriawan, Aris Heri Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi, Balok Bima Bayu Santoso Cahyo Pangestu Fajar Astuti Hermawati Fernanda Eka Saputra Gatut Budiono Gatut Budiono Gatut Budiono Hartayu, Ratna Hartono, Elvianto Dwi I Made Kastiawan Imam Suri Tauladan Indra Budi Hermawan Iswahyudi, Yolan Bagus Putra Ivan Maulana, Ade Izzah Aula Wardah Izzah Aula Wardah Kukuh Setyadjit Kukuh Setyadjit, Kukuh Kusmiyati Kusmiyati M Ary Heryanto Miftachun Nasichin Mohammad Irfandi Novianto Muhammad Al Ahyudi Muhammad Sultan Abdai Habibullah Nababan, Wendi Antonius S Prenata, Giovanni Dimas Puji Slamet Puji Slamet Puji Slamet Puji Slamet Puji Slamet Puji Slamet Slamet Puji Slamet, Puji Putra, Roy Wibatsu Raden Mohamad Herdian Bhakti Rafli, Syah Achmad Amar Ratna Hartayu Ratna Hartayu Santoso SANTOSO SANTOSO Tasmono, Hadi Wahyu Setyo Pambudi Wardah, Izzah Aula