Perdana Putera, Perdana
Agricultural Machine and Equipment Department, Agricultural Polytechnic of Payakumbuh, Tanjung Pati, 50 Kota,26271, Indonesia

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ANALISA PEMODELAN GENERATOR MAGNET PERMANEN TIGA PHASA DENGAN SUSUNAN MAGNET ROTOR MENGIKUTI IPM – V Hidayat, Rezi; Alfiansyah, Fahmi; Fadila, Afif; Syofian, Andi; Anugrah, Anggun; Putera, Perdana
Ensiklopedia of Journal Vol 6, No 3 (2024): Vol. 6 No. 3 Edisi 1 April 2024
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v6i3.2288

Abstract

This article is a study analysis for converting an automotive alternator with a maximum output of 24 volts 100 A, into a three-phase permanent magnet generator by replacing the alternator rotor with a permanent magnet rotor. The arrangement of the magnets is similar to the arrangement of an Interior Permanent Magnet (IPM) rotor in a 12-pole V model. Analysis is carried out using COMSOL Multiphysics® software, modeling permanent magnet generators adapting the shape of the alternator and the shape and number of coils on the alternator stator are maintained (not changed). Finite Element Method simulation results using N52 Neodymium Magnets on the rotor, the output voltage amplitude is 4.5 volts with an AC frequency of 50 Hz (at a speed of 500 rpm). The AC waveform of the modified generator output is not purely sinusoidal.Keywords : Generator, Permanent Magnets, Finite Element Method, Neodymium
Penentuan Kriteria Kapasitas Transformator Berdasarkan Proyeksi Kebutuhan Energi secara Mikrospasial SENEN, ADRI; DINI, HASNA SATYA; ANGGAINI, DWI; PUTERA, PERDANA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 10, No 1: Published January 2022
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v10i1.200

Abstract

ABSTRAKProyeksi energi memiliki peran penting dalam perencanaan pengembangan sistem distribusi listrik. Penelitian ini bertujuan untuk menentukan lokasi, jumlah dan penambahan kapasitas transformator yang diperlukan di area jaringan Tangerang. Metode prakiraan proyeksi energi dilakukan secara mikrospasial dengan membagi area layananan dalam bentuk grid – grid yang kecil (kelurahan). Selanjutnya pengelompokan (clustering) dilakukan berdasar karakteristik geografis, demografi, ekonomi dan kelistrikan wilayah untuk memperkirakan kerapatan beban. Hasil clustering yang terdiri dari 100 kelurahan, terkelompok menjadi 5 cluster dengan pertumbuhan beban per cluster rata-rata sebesar 8,4 %. Hasil perhitungan kapasitas transformator untuk wilayah Tangerang untuk 10 tahun adalah 250 kVA, 630 kVA, 1000 kVA dan 1250 kVA, dengan asumsi pembebanan transformator maksimal 80 %. Disamping itu prakiraan beban pada tingkatan transformator distribusi mengalami penambahan 3.064 unit gardu distribusi.Kata kunci: Prakiraan Beban, Transformator , Micro-spatial, Cluster, Tangerang ABSTRACTEnergy projection has important role in the planning of electricity distribution systems development. This study set out to investigate location, number and capacity of the transformers in Tangerang network area. A microspatial energy projection forecasting method was used by dividing the service area into small grids. Furthermore, clustering is carried out based on geographical, demographic, economic and electrical characteristics of the region to predict the load density. The clustering results consist of 100 grids grouped into 5 clusters with an average load growth 8.4% per cluster. As the result, the transformers capacity for the Tangerang area for the next 10 years are 250 kVA, 630 kVA, 1000 kVA and 1250 kVA, with the assumption that the maximum transformer loading is 80%. In addition, the estimated load at the distribution transformer level has an additional 3,064 distribution substations.Keywords: Load Forecasting, Transformer, Micro-spatial, Cluster, Tangerang
Analysis Bio-oil of Pyrolysis Production Process from Corn Cobs Novita, Sri Aulia; Putera, Perdana; Djinis, Musdar Effy; Ernita, Yuni
Journal of Applied Agricultural Science and Technology Vol. 9 No. 3 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i3.463

Abstract

Corn cobs are converted into bio-oil through pyrolysis using a simple pyrolysis apparatus at temperatures ranging from 300 to 400°C. This study evaluates the efficiency of the pyrolysis system, characterizes the compounds in corn cob bio-oil, and analyzes the economic viability of the method. The methods include the raw materials preparation (through drying and size reduction), development of bio-oil production equipment, implementation of pyrolysis and condensation processes, purification of the resulting bio-oil, compound analysis of the bio-oil, performance evaluation of the equipment, and engineering economic analysis. The successful production of high-quality bio-oil depends heavily on the precise and careful installation of all system components, including the pyrolysis reactor, smoke pipe, tar catcher, condenser, coil pipe, outlet pipe, liquid smoke container, water drum, and combustion furnace. The tool has a production capacity ranging from 0.89 to 0.96 kg per hour, with a coefficient of determination of 97.94%, and produced a yield of 32% to 34%. The bio-oil derived from corn cobs contained several compounds, including acetic acid, methyl ester, decenal, methyl 9,9-dideutero-octadecanal, phenol, 1-octanol, 2-butyl, 2-heptadecanone, myristaldehyde, octadecane, 1-chloro, and 1,9-tetradecadiene. The basic operating cost of the equipment is Rp 18,509.28 per kilogram, with a break-even point (BEP) of 238.43 kg per year. The basic production cost represents the minimum selling price required to achieve profitability. Biomass pyrolysis is a crucial thermal conversion technique with significant industrial and economic potential.
Memomath: Educational Game Application for Elementary School Children in Special Inclusion Classes for Students with Slow Learner Diagnosis Jingga, Trinovita Zuhara; Novita, Rina; Putri , Ega Evinda; Febrina , Widya; Putera, Perdana
JURNAL TEKNOLOGI DAN OPEN SOURCE Vol. 7 No. 2 (2024): Jurnal Teknologi dan Open Source, December 2024
Publisher : Universitas Islam Kuantan Singingi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jtos.v7i2.3999

Abstract

Memomath is a game-based educational application designed to support the learning of children diagnosed as slow learners in elementary school inclusion classes. This application integrates mnemonic-based math, reading, and memory exercises to improve students' academic skills and learning motivation. This research was conducted at SDIT Madani Islam Terpadu Kota Payakumbuh, an inclusive school that provides special programs for students with slow learning needs. The waterfall method was applied in the development of this application, involving the stages of needs analysis, design, implementation, testing, and maintenance. The test results showed that this application was effective in increasing engagement and understanding of concepts in students, especially at the age of 7-12 years. The data also revealed the relationship between age and duration of application use, providing important insights for design optimization. This study shows that a targeted gamification approach can make a significant contribution to the education of children with special needs, especially in helping them overcome learning challenges.
OPTIMISASI TEKNOLOGI INFORMASI UNTUK EFISIENSI LAYANAN: STUDI KASUS PADA SISTEM ANTRIAN RSIA BATUSANGKAR Khomarudin, Agus Nur; Aulia, Romy; Novita, Rina; Nazli, Rabby; Putri, Ega Evinda; Amrizal, Amrizal; Putera, Perdana
Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Vol 5, No 2 (2025): Desember 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpstm.v5i2.5509

Abstract

Abstract: The implementation of information technology in healthcare services has become a strategic necessity for improving service efficiency and quality, particularly in patient queue management systems. RSIA Batusangkar, a medium-scale hospital, has experienced operational challenges related to manual queue management, including prolonged waiting times, service irregularities, and decreased patient satisfaction. This Community Service Program (Pengabdian kepada Masyarakat) aimed to optimize the use of information technology through the implementation of a web-based digital queue system integrated with the hospital’s internal service workflow. A participatory, community-driven approach was employed by involving hospital management, service staff, and patients throughout the stages of needs assessment, system design, implementation, and evaluation. The system was developed using the Agile methodology. Evaluation was conducted through quantitative pre- and post-implementation measurements, complemented by qualitative assessments. The results indicate that the digital queue system reduced the average patient waiting time by 44.4%, increased service throughput by approximately 50%, and improved patient satisfaction levels from moderately satisfied to satisfied–highly satisfied. These findings demonstrate that optimizing information technology through a digital queue system effectively enhances operational efficiency and the overall quality of healthcare services. This program is expected to serve as a practical reference model for digital transformation in regional hospital services. Keyword: digital queue system, information technology, service efficiency, hospital services, community service. Abstrak: Penerapan teknologi informasi dalam layanan kesehatan menjadi kebutuhan strategis untuk meningkatkan efisiensi dan kualitas pelayanan, khususnya pada sistem antrian pasien di rumah sakit. RSIA Batusangkar sebagai rumah sakit skala menengah masih menghadapi permasalahan antrian manual yang berdampak pada lamanya waktu tunggu, ketidakteraturan layanan, serta menurunnya kepuasan pasien. Kegiatan Pengabdian kepada Masyarakat (PkM) ini bertujuan untuk mengoptimalkan pemanfaatan teknologi informasi melalui implementasi sistem antrian digital berbasis web yang terintegrasi dengan alur layanan internal rumah sakit. Metode PkM yang digunakan adalah pendekatan partisipatif berbasis kebutuhan (community-driven), melibatkan manajemen rumah sakit, petugas layanan, serta pasien. Pengembangan sistem dilakukan menggunakan metodologi Agile, sementara evaluasi dilakukan melalui pengukuran kuantitatif pra dan pasca implementasi serta evaluasi kualitatif. Hasil kegiatan menunjukkan bahwa sistem antrian digital mampu menurunkan waktu tunggu pasien rata-rata sebesar 44,4%, meningkatkan throughput pelayanan hingga 50%, serta meningkatkan skor kepuasan pasien dari kategori cukup puas menjadi puas–sangat puas. Temuan ini menunjukkan bahwa optimalisasi teknologi informasi melalui sistem antrian digital efektif dalam meningkatkan efisiensi operasional dan kualitas layanan kesehatan. Program PkM ini diharapkan menjadi model transformasi digital layanan rumah sakit di daerah. Kata kunci: sistem antrian digital, teknologi informasi, efisiensi layanan, rumah sakit, pengabdian kepada masyarakat.
Optimasi Kinerja Buck Converter Menggunakan Proportional Integral Controller untuk Regulasi Tegangan Stabil Ansutia, Muhammad Rinande; Jamaluddin, Jamaluddin; Putera, Perdana
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.31524

Abstract

Optimization of Buck Converter performance is carried out through the application of a Proportional-Integral (PI) Controller to achieve more stable output voltage regulation in direct current (DC)-based electronic systems. The Buck Converter is a DC-DC converter that steps down the input voltage to a lower output voltage; however, in an open-loop configuration, maintaining output voltage stability becomes challenging when load variations or input fluctuations occur. These conditions lead to regulation errors, overshoot, and oscillations that reduce system accuracy and reliability. In this study, the PI Controller is implemented in a closed-loop configuration as a solution to enhance voltage regulation performance. The research method is conducted entirely through simulations using PLECS software, analyzing system responses under both open-loop (without PI Controller) and closed-loop (with PI Controller) conditions. Simulation results show that the open-loop system is highly dependent on input voltage variations and unable to maintain output voltage consistently at the reference value. In contrast, the PI Controller significantly reduces the steady-state error from an average of 25,13% to 0,52%, accelerates stabilization time, and eliminates excessive overshoot observed in the open-loop system. Additionally, the output voltage can be maintained near 12 V with a maximum deviation of only 0,08 V despite changes in input voltage. These findings demonstrate that the PI Controller is effective in improving stability, accuracy, and reliability of voltage regulation in Buck Converters. The results contribute to the development of power electronics systems requiring more adaptive and efficient voltage control under various operating conditions.