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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Applied Power Engineering (IJAPE) JTEV (Jurnal Teknik Elektro dan Vokasional Jurnal Simetris TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics INVOTEK: Jurnal Inovasi Vokasional dan Teknologi KACANEGARA Jurnal Pengabdian pada Masyarakat Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Mimbar Ilmu Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Teknologi Informasi dan Pendidikan EDUTEC : Journal of Education And Technology Indonesian Journal of Electrical Engineering and Computer Science JPTE: Jurnal Pendidikan Teknik Elektro JTEIN: Jurnal Teknik Elektro Indonesia Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Vokasi Mekanika Ranah Research : Journal of Multidisciplinary Research and Development SNTE Journal of Industrial Automation and Electrical Engineering
Muldi Yuhendri
Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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The Effectiveness of Using E-Learning as a Learning Media during the Covid-19 Pandemic Elda Permata Sari; Muldi Yuhendri
EDUTEC : Journal of Education And Technology Vol. 5 No. 1 (2021): September 2021
Publisher : STAI Miftahul Ula Nganjuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29062/edu.v5i1.306

Abstract

This study aims to determine the effectiveness of using E-learning as a learning medium during the COVID-19 pandemic in the January-June 2021 semester of the Technology and Vocational Education study program, Padang State University. This research is descriptive research with quantitative method. Data collection techniques using a questionnaire given via google form, where the data analysis technique is to see the achievement of the existing indicators. The subjects of this study were postgraduate students of technology and vocational education in the 2020 entry year of the Faculty of Engineering, Padang State University. Based on data analysis, it was found that quantitative data, indicators of learning objectives were seen that the respondent's achievement level (TCR) reached 77.20% with sufficient category. The indicator of learning infrastructure shows that the TCR reaches 82.07% with a good category. The indicator of the ability to use technology is seen that the TCR reaches 81.18% in the good category. The time efficiency indicator shows that the TCR reaches 81.93% with a good category. Indicators of learning outcomes seen that the TCR reached 86.70%. Thus, it can be concluded that the use of E-learning as a learning medium during the COVID-19 pandemic is categorized as effective, it can be seen from the results of research on 5 indicators, there are 4 indicators which are in good category and 1 is in sufficient category.
Design to optimize the location, number, and performance of dynamic voltage restorers using artificial neural networks Yulianta Siregar; Faizzufar Taqy; Mohd Najib Mohd Hussain; Hafizh Prihtiadi; Muldi Yuhendri
International Journal of Applied Power Engineering (IJAPE) Vol 15, No 2: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v15.i2.pp793-807

Abstract

The need for electrical energy always increases from year to year. This means that the distribution system in the electric power system needs to pay attention to its level of stability and reliability. A low level of stability can cause disruption and result in losses. The system's stability and reliability can be increased by installing custom power devices (CPD) equipment such as a dynamic voltage restorer (DVR). In this research, the location, number, and performance of DVRs are optimized using an artificial neural network based on the voltage stability of the distribution network in the Sibolga Penyulang SB02 area. Based on the research results, buses 2, 12, 24, 27, and 35 are the best places to install DVRs, and the system will have five DVRs installed. A three-phase short circuit simulation was used to determine how feeder stability was impacted by DVR performance. Then, the voltage falls to 0.1770 p.u. during a disturbance and then rises to 0.8073 p.u., which is within the typical voltage limit of > 0.9 p.u. It means that DVRs restored the voltage fully to the acceptable threshold.
Design and analysis of hybrid filters for harmonic reduction in three-phase nonlinear rectifier loads Yulianta Siregar; Daniel Julian Sinaga; Nur Nabila Mohamed; Dedet Candra Riawan; Muldi Yuhendri
Bulletin of Electrical Engineering and Informatics Vol 15, No 1: February 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i1.10971

Abstract

Rectifiers are included in the non-linear load category and can create resonance in a distribution network, which can be called harmonics. In a distribution network, rectifiers (non-linear loads) distort voltage and current harmonics, resulting in power losses and reduced power quality in the network. Harmonics in the distribution power grid cannot be eliminated, but can be reduced to values that can still be tolerated and evaluated until they are by the IEEE 519-2014 Standard. This research discusses reducing harmonic values in distribution networks designed in a simulation to implement a combination (hybrid) of series active and passive filters of the high pass and high pass type-C types. The results of research using the installation of high pass filters, type C filters, series active filters, hybrid-1 filters, and hybrid-2 filters, respectively, for each current total harmonic distortion (THD) value are 15.93%, 16.15%, 8.51%, 0.27%, and 0.25% where the current THD value when using the two hybrid filters is below the specified standard limit, namely 5%. By installing a hybrid filter, the harmonic value in each feeder is much better than installing a single series active filter, a high pass filter, and a type-C filter.
RANCANG BANGUN PEMBANGKIT LISTRIK BERSKALA KECIL MODEL TURBIN VORTEX SEBAGAI APLIKASI TEKNOLOGI TEPAT GUNA DI NAGARI KURANJI HULU Purwantono Purwantono; Dori Yuvenda; Randi Purnama Putra; Muhibbudin Muhibbudin; Muldi Yuhendri
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 1 (2024): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i1.649

Abstract

Pembangkit listrik berskala kecil masih banyak dibutuhkan dikalangan masyarakat, khususnya di daerah tertinggal yang tidak terjangkau aliran Listrik PLN. Kawasan hutan lindung merupakan sumber potensi air yang muaranya adalah aliran sungai-sungai baik kecil maupun besar. Nagari Kuranji Hulu memiliki sumber air sebagai energi kinetic yang dapat dikonversi menjadi energi listrik atau tenaga pikohidro, Masyarakat di sekitarnya hanya memanfaatkan sebagai irigasi untuk persawahan. Teknologi Tepat Guna sebagai alternatif yang dapat membuka wawasan bagi masyarakt desa. Aplikasi Teknologi Tepat Guna ini diantaranya adalah Turbin air vortex. Turbin Vortex ini mempunyai keuntungan yaitu jumlah alairan air yang dibutuhkan relatif kecil, ketinggian permukaan jatuh air juga kecil dan ini sangat sesuai dengan kondisi aliran air pada sungai kecil atau parit. Secara keseluruhan biaya pembuatan pembuatan Turbin Vortex ini menjadi lebih murah. Konstruksi Turbin Vortex dirancang dengan menggunakan komponen komponen yang relatif kecil dan ringan sehingga secar keseluruhannya juga menjadi lebih murah, disamping itu dengan komponen yang kecil dan ringan ini memudahkan untuk mobilitas pemasangan Vortex. Konstruksi pembuatan Vortex ini tidak membutuhkan bendungan besar, pipa saluran panjang, dan pintu air yang besar. Penggunaan konstruksi kincir model turbin vortex ini dapat digunakan pada daerah aliran sungai yang mempunyai kecepatan aliran air antara 1–5 m/s tanpa harus diletakan pada air terjun yang tinggi. Pengujian alat ini dilakukan di Kanagarian Kuranji Hulu dengan membuat sebuah konstruksi tenaga listrik berskala kecil. Rancang bagun turbin ini dimulai dari survei awal di lapangan, analisis kapasitas turbin tenaga air, perencanaan desain turbin, proses fabrikasi dan pengujian kinerja dari turbin vortex.
Co-Authors Adtrizal Lindo Agung Satria Ahyanuardi Ahyanuardi Al Amin, Athah Alham Ali ALWI, ZIKRI Anne Fadia Ikhfa Aprilianty, Resti Ari Anggawan Arief, Fashly Aslimeri Aslimeri, Aslimeri Asnil Asnil Aswaldi Alfaris Aswardi Aswardi Athaya Atsiq Aulia Rahman Azar Ihsan Azizah, Farah Azzikri, Muhammad Fadhel Candra Riawan, Dedet Citra Dewi Citra Dewi Daniel Julian Sinaga Dedet Candra Riawan Diffa, Allif Khairul Doni, Dona Dori Yuvenda Dwi Junita, Revidadina Dwi Kurniawan, Bintang Dwi Saputra, Robi Efianti, Weli Eko Solihin Elda Permata Sari Elda Permata Sari Emilia Mustafa Fadhli Ranuharja Fahmi Idris Faizzufar Taqy Faradina, Nevi Farahilla, Wahyu Fatimah Hanifah Febri Angriawan Febri Rahmadi Firmansyah, M.Erdian Gatot Santoso Putra Gozi, Muhammad Habibullah Hafizh Prihtiadi Hambali Hambali Hambali Hambali Hambali Hambali Haris Masrepol Hendra, Ayu Ikhfa, Anne Fadia Ikhsan Rifaldo Ikhwani Ikhwan Ilham Kurniawan Irma Husnaini Irvan Zakaria Candra Ishlah Fain Sanul Iskandar, Adrian Juli Sardi Khulkhairat, Delvira Kurnia Deca Nevil, Prayoga Larra Oktavia Lovella, Nadillah Luthfil Hirzan M Heycal Ridwan Maulana Rasiddin, Muhammad Maulana, Iqbal Dafri Maulida, Hilda Mauridhi Hery Purnomo Minsandi, Ayub Mirshad, Emilham Mochamad Ashari Mohd Najib Mohd Hussain Muhamad Ilham Esario Muhammad Padri Muhammad Rezky Muhammad Zein, Habibi Muhammad, Razi Muhammmad Zainul Fikri Muhibbudin Muhibbudin Mukhaiyar, Riki Muskhir, Mukhlidi Nabila Binti Mohamed, Nur Nahydatul Hami Najmi, Muhammad Nila Gusriani Nugraha, Ksatria Nur Nabila Mohamed Olivia, Fanessa Peri Peri Purwantono Purwantono Putra, Randi Purnama Rahma Putri, Nadila Rahmad, Rahmad Rizki Rahmat Hidayat Rahmawati Mayangsari Raihan Alfiansyah, Muhammad Randaka Saputra Randy Setiawan Randy Yonanda Pratama Rasyid, Hambali Reni Putri Mayenti Riadotul Jannah Ridwan, Ainul Rijeng Firanda Risfendra, Risfendra Romi Fadli Romi Fernandes Rotua Oktaviana Siahaan, Yosephine Salihul Fajri Saputra, Rifaldo Selfi Harowanti Shandy Oktafianto Pratama Simanullang, Aldi Simon Padri P Sonia Anjeli Sukardi, Sukardi Syafitri, Muharani Syafyutina, Rahmat Alwafi Syarah, Ullya Ta ali Taali, Taali Tri Yogi Putra Trivaldo Putra Ulandari, Putri Widya Anggraini Yanto, Doni Tri Putra Yelfianhar, Ichwan Yudi Ari Putra Yulia Dwi Satriani Yulianta Siregar