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Dynamic Voltage Restorer for Mitigation of Voltage Sags Due to 3 Phase Motor Starts Based on Artificial Neural Networks Sujito, Sujito; Gumilar, Langlang; Ridzki, Imron; Syah, Abdullah Iskandar; Falah, Moh. Zainul
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 9 No. 1 (2023): March
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v9i1.25897

Abstract

The Direct On-Line (DOL) process of starting a high-power 3-phase induction motor causes voltage sags in the distribution system that is connected to one point of common coupling (PCC). Voltage sag can cause damage and failure of sensitive loads. This article analyzes and proposes a simulation of voltage sag recovery using a Dynamic Voltage Restorer (DVR) based on an Artificial Neural Network (ANN). ANN is used as a detector and regulator of the voltage compensation value. In this study, a 3-phase induction motor will be connected to a sensitive load, and the DVR will be placed in series with a voltage source or PCC with a sensitive load. The simulation test system uses Simulink-Matlab R2016a with different configurations of induction motor parameters. Based on the simulation results show that the parameters of the 3-phase induction motor cause the depth and duration of the voltage sag. DVR with ANN control can detect and compensate for a voltage sag of 0.5 pu so that the voltage will be normal to 1 pu.
Teknologi Mesin Roasting Berbasis Kontrol Suhu Guna Tingkatkan Kualitas dan Produktifitas UMKM Kopi Gupait Hary Suswanto; Sujito, Sujito; Budi Wibowotomo; Nuzul Zaeni Eki Ramadhanu; Abdullah Iskandar Syah
Rengganis Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2025): November 2025
Publisher : Pendidikan Matematika, FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/rengganis.v5i2.836

Abstract

MSMEs are the driving force of the community's economy and play an important role in the coffee processing sector. Gupait MSMEs still face obstacles in the roasting process, which is done manually using a hand crank, resulting in unstable temperatures and inconsistent roasting quality. This community service program was implemented using the Participatory Action Research (PAR) method through the stages of observation, socialization, design of a temperature-controlled roasting machine, trial assistance, and operational training for partners. The roasting machine developed has a capacity of 5 kg per roasting process and uses an automatic Temperature Control system. The implementation results showed a significant improvement in the quality of the roasting, with a uniformity level of around 85-90% and no burnt coffee beans, based on visual evaluation from field trials. Additionally, production capacity increased from approximately 1 kg to 5 kg (maximum drum capacity). The assistance also improved partners' understanding of equipment use and maintenance. This program had a positive impact on product quality improvement, process efficiency, and the competitiveness of Gupait MSMEs.
Peningkatan Kualitas Air Bersih Melalui Optimalisasi Filter Guna Mengatasi Air Keruh dan Berbau di TPQ Nurul Huda Heru Wahyu Herwanto; Sujito, Sujito; Triyanna Widyaningtyas; Abdullah Iskandar Syah; Muhammad Fazlur Rahman Addakhil
PaKMas: Jurnal Pengabdian Kepada Masyarakat Vol 6 No 1 (2026): Mei 2026
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/pakmas.v6i1.5348

Abstract

TPQ Nurul Huda, located in Mayong Village, Karangbinangun Subdistrict, Lamongan Regency, is a religious educational institution that plays an important role in nurturing the younger generation through social and religious activities. This TPQ faces serious problems related to the availability of clean water. The well water used tends to be cloudy, discoloured, and smelly, causing discomfort for residents in meeting their household needs and worshipping. This community service activity aims to overcome these problems through the application of appropriate technology in the form of water filters. The methods used include surveying water conditions, designing and installing filters, training in operation, and maintenance of equipment, as well as testing and evaluating the filtration results together with the community. The results show a significant improvement in water quality, where water that was originally cloudy, discoloured, and odorous has become clear, odourless, and suitable for daily use. In addition, the community's skills in operating and maintaining the filters have also improved, so that this technology can be utilised independently and sustainably, while also contributing significantly to the comfort of worship and the health of the community.