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All Journal International Journal of Electrical and Computer Engineering Jurnal Informatika dan Teknik Elektro Terapan INSIST (International Series on Interdisciplinary Research) Dielektrika : Jurnal Ilmiah Kajian Teori dan Aplikasi Teknik Elektro Electrician : Jurnal Rekayasa dan Teknologi Elektro Jurnal Teknik Ilmu dan Aplikasi
Endah Komalasari
University of Lampung (UNILA)
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Rancang Bangun Alat Monitoring Ketidakseimbangan Beban Transformator Distribusi Berbasis Internet of Things Osea Zebua; Endah Komalasari; Syaiful Alam; Aldiansyah Aldiansyah
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 15 No. 2 (2021)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v15n2.2203

Abstract

Intisari Kerusakan transformator distribusi sering disebabkan oleh ketidakseimbangan beban, sehingga monitoring ketidakseimbangan beban transfornator distribusi perlu dilakukan. Letak dan lokasi transformator distribusi yang jauh dan tersebar mengharuskan monitoring harus dilakukan dari jarak jauh. Teknologi internet of things (IoT) dan komunikasi tanpa kabel mendukung monitoring dari jarak jauh. Makalah ini menyajikan perancangan dan pembuatan alat monitoring ketidakseimbangan beban transformator distribusi menggunakan teknologi IoT. Mikrokontroler Arduino digunakan untuk memproses data tegangan dan arus dari sensor, menghitung indikator ketidakseimbangan beban dan mengirim data hasil proses ke jaringan internet menggunakan Ethernet shield dan router yang diperlengkapi dengan modem. Thingspeak digunakan sebagai platform IoT. Hasil pengujian menunjukkan bahwa peralatan monitoring mampu bekerja dengan baik sehingga kondisi ketidakseimbangan beban transformator distribusi dapat dimonitor secara online dari jarak jauh menggunakan perangkat yang terhubung ke jaringan internet. Kata kunci Monitoring, Ketidakseimbangan Beban, Transformator Distribusi, Internet of things. Abstract — Damage to the distribution transformer is often caused by unbalanced load, so it is necessary to monitor the unbalanced load condition of the distribution transformer. The remote and dispersed location of distribution transformers requires remote monitoring. Internet of things (IoT) technology and wireless communication support remote monitoring. This paper presents the design and manufacture of distribution transformer unbalanced load monitoring tools using IoT technology. The Arduino microcontroller is used to process voltage and current data from sensors, calculate unbalanced load indicators and send process data to the internet network using an Ethernet shield and a router equipped with a modem. Thingspeak is used as an IoT platform. The test results show that the monitoring equipment can work properly so that the distribution transformer unbalanced load conditions can be monitored online remotely using a device connected to the internet network. Keywords Monitoring, Unbalanced Load, Distribution Transformer, Internet of Things.
Pengendalian Motor Brushless Direct current Dengan Frekuensi Tinggi Pulse Width Modulation Dengan Metode Back-Electromotive Force Menggunakan Microcontroller Charles Ronald Harahap; Endah Komalasari
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 17 No. 2 (2023)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v17n2.2479

Abstract

Abstract — Research on speed control of electric motors has developed, especially the BLDC motor. In previous research, the pulse width modulation (PWM) has been controlled using the voltage and duty cycle to control the motor speed. The PWM method is a method that is widely used in controlling BLDC motor speed. This research will discuss controlling the speed of the BLDC motor using the PWM modulation method with the switching frequency of 20 KHz and the frequency generated from Arduino reaches 300 Hz. In this study, two tests will be carried out, namely no load and loaded tests. From the two tests carried out, data is obtained in the form of the speed, power, and torque of the motor based on changes in the frequency. The no-load test produces a maximum speed of 14,328 rpm, a power of 71,2 watts, and a torque of 0,047 Nm. During the load test, the maximum speed is 12,060 rpm, power is 79,3 watts, and torque is 0.062 Nm. Keywords— BLDC motor, pulse width modulation, frequency variable, Arduino Mega 2560
Perancangan Self Tuning Dua Derajat Kebebasan dengan Metode Fuzzy Logic pada Pengendalian Kecepatan Motor Sinkron Magnet Permanen Menggunakan Metode Vector Control Charles Ronald Harahap; Endah Komalasari; Nadia Julian Putri
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 17 No. 3 (2023)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v17n3.2483

Abstract

Abstract — This paper proposes self tuning Proportional-Integral/Proportional gain controller parameter in a Two Degree of Freedom (2DoF) using fuzzy logic method for speed control of permanent magnet synchronous motor. The self tuning method can automatically determine the PI-P parameters using a fuzzy logic control system. Speed control of the 3-phase permanent magnet synchronous motor is carried out by changing the 3-phase system (a-b-c) to a 2-phase system (direct-quadrature) using the vector control method. SVPWM method is used to modulate six switches on a 3 phase inverter. The results obtained using MATLAB Simulink show that by using a self-tuning fuzzy logic control system, high motor performance results are obtained, where the speed response of the permanent magnet synchronous motor shows that the step response and disturbance response are close to the ideal response. Keywords— Permanent Magnet Synchronous Motor, Self Tuning, Two Degrees of Freedom, Fuzzy Logic, Vector Control.
Analisis Commissioning Pembangkit Listrik Tenaga Surya Kapasitas 20.5 kWp On Grid PT. Quickprint Office Soedjarwanto, Noer; T Rausyan Hilmy; Komalasari, Endah; Zebua, Osea
Jurnal Teknik Ilmu dan Aplikasi Vol. 5 No. 2 (2024): Jurnal Teknik Ilmu dan Aplikasi
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtia.v5i2.4823

Abstract

Solar power plants (PLTS) are one of the renewable energy plants that continue to be developed in Indonesia to meet electrical energy needs. The Indonesian government issued the Electricity Supply Business Plan (RUPTL) as a national energy management framework designed to resolve energy needs challenges and problems by utilizing new renewable energy sources (EBT). In the construction of a Solar Power Plant (PLTS) at PT. Quick Print Office built PLTS with a capacity of 20.5 kWp which is used for the electrical energy needs used by PT. Quick Print Office with a total power of 10 kWp, generator system with an on grid system which means it is directly connected to the PLN network. In the feasibility study, the performance ratio (PR) obtained from manual calculations for inverter 1 was 71.9% and inverter 2 was 26.2%. Meanwhile, to improve the performance ratio of the PLTS system, maintenance of the PLTS system is required, starting from cleaning the panels or checking the cable installation on the PLTS. For the calculation results, the efficiency on inverter 1 was 94.6% and on inverter 2 the efficiency was 90.8% when measured at 11.18 – 14.53.
MONITORING KETIDAKSEIMBANGAN BEBAN TRANSFORMATOR DISTRIBUSI MENGGUNAKAN INTERNET OF THINGS Zebua, Osea; Komalasari, Endah; Alam, Syaiful; Aldiansyah, Aldiansyah
DIELEKTRIKA Vol 8 No 2 (2021): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

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

Abstract

Unbalanced load is one of the causes of unpredictable distribution transformer failure, so it is necessary to monitor the unbalanced load condition of the distribution transformer. Internet of things technology-based equipment supports remote monitoring needs. This paper presents the monitoring of unbalanced load in distribution transformer based on IoT technology. The ZMPT101B voltage sensor and SCT019 current sensor are used to measure the rms voltage and current in each phase, the Arduino microcontroller is used to process the measurement data and send it to the network server via an ethernet shield and a wifi router equipped with an internet modem. The results showed that the monitoring equipment based on IoT technology is able to work to monitor load unbalanced online so that it could be monitored remotely via device connected to the internet network
Monitoring Loss of Life Transformator Distribusi Menggunakan Internet of Things Zebua, Osea; Komalasari, Endah; Alam, Syaiful
DIELEKTRIKA Vol 9 No 1 (2022): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

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

Abstract

Berbagai karakteristrik operasi dan gangguan yang terjadi pada dapat mengurangi umur pelayanan transformator distribusi. Pembebanan yang berlebihan, ketidakseimbangan beban dan gangguan hubungsingkat dapat mengakibatkan temperatur isolasi transformator naik dan mengakibatkan kerusakan isolasi transformator distribusi. Pemantauan dan monitoring transformator distribusi setiap waktu terkendala dengan banyaknya jumlah transformator distribusi, letak dan posisi pemasangan transformator distribusi dan jumlah tenaga pemantau yang terbatas. Tujuan dari penelitian ini adalah memonitoring prediksi loss of life (berkurangnya umur pelayanan) transformator distribusi dari jarak jauh dan kontinyu dengan merancang dan membuat suatu peralatan monitoring berbasis mikrokontroler dan teknologi internet of things (IoT). Hasil penelitian menunjukkan bahwa peralatan yang dibuat mampu menampilkan prediksi loss of life, besaran-besaran listrik dan temperatur transformator distribusi secara online yang dapat dilihat melalui peralatan yang terhubung ke jaringan internet.
PENERAPAN ANALOG MODULASI LEBAR PULSA MENGUBAH DAYA DC KE DAYA AC 3 FASA UNTUK MEMUTAR MOTOR BLDC TIGA FASA Soedjarwanto, Noer Arif; Alam, Syaiful; Komalasari, Endah; Umar, Muhammad Abdullah
Jurnal Informatika dan Teknik Elektro Terapan Vol 12, No 3S1 (2024)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v12i3S1.5312

Abstract

Teknologi yang kian pesat perkembangannya selaras dengan energi yang dikonsumsinya memberikan dampak negatif kepada sumber energi listrik konvensional serta mengakibatkan kerusakan lingkungan dimana perlunya energi alternatif yaitu energi baru terbarukan (EBT). Energi baru terbarukan ini menghasilkan energi listrik dalam bentuk arus searah (DC) yang perlu diubah menjadi arus bolak-balik (AC). Maka, hasil energi listrik yang diproduksi EBT dapat dikonversi menjadi arus bolak-balik dengan menggunakan inverter. Maka penilitian disini adalah untuk simulasi dan membuat inverter tiga fasa untuk mengubah energi listrik DC menjadi AC tiga fasa lalu dihubungkan ke motor bldc tiga fasa dengan berbagai frekuensi. Inverter memerlukan sebuah sistem kontrol dalam penaklaran transistor daya, dimana metode yang digunakan adalah Sinusoidal Pulse Wide Modulation (SPWM) yang dimana metode ini membandingkan dua gelombang yaitu gelombang fundamental (sinus) dan gelombang karir (segitiga) dimana hasil dari komunikasi ini yang dipanggil sebagai SPWM yang nantinya digunakan untuk pensaklaran transistor daya pada inverter. Keluaran dari inverter disambungkan ke motor bldc tiga fasa lalu diukur kecepatannya menggunakan tachometer serta frekuensi yang dikeluaran dapat divariasikan dengan mengatur frekuensi dasar gelombang dengan menggunakan mikrokontroler. Konklusi yang dapat diambil dari penelitian ini mendemonstrasikan bahwa kecepatan pada kecepatan motor bldc tiga fasa yang mana berbanding lurus terhadap frekuensi.
DESAIN PWM PADA THREE PHASE INTERLEAVED BUCK CONVERTER SEBAGAI CATU DAYA 10KW Agani, Usman; Komalasari, Endah; Darajat, AU
Jurnal Informatika dan Teknik Elektro Terapan Vol 12, No 3 (2024)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v12i3.4330

Abstract

Abstrak. Tulisan ini menyajikan desain Pulse Width Modulation (PWM) yang digunakan pada DC DC Buck Converter. Dalam tulisan ini suatu perbandingan antara pembangkitan signal Buck Converter konvensional dan Three Phase Interleaved Buck Converter untuk mengurangi ripple pada keluaran DC DC Converter. Suatu Interleaved Buck Converter adalah pilihan yang lebih disukai untuk diaplikasikan sebagai catu daya menengah dan tinggi karena dapat mengurangi ripple. Sistem yang diusulkan didesain menggunakan PSIM.  Dari pengujian yang dilakukan didapatkan interleaved PWM pada topologi Three Phase Buck Converter mampu mengurangi ripple tegangan dan arus keluaran, sehingga mampu menghasilkan efisiensi yang lebih tinggi. Abstract. This paper presents the Pulse Width Modulation (PWM) design used in the DC DC Buck Converter. In this paper, a comparison is presented between conventional Buck Converter signal generation and Three Phase Interleaved Buck Converter to reduce the ripple at the DC DC Converter output. An Interleaved Buck Converter is the preferred choice for application as a medium and high power supply because it can reduce ripple. The proposed system is designed using PSIM. From the tests carried out, it was found that interleaved PWM in the Three Phase Buck Converter topology was able to reduce output voltage and current ripples, thereby producing higher efficiency.
Co-Authors Afrizal Fitriandi Agani, Usman Agus Trisanto Ahmad Saudi Samosir Aldiansyah Aldiansyah Aldiansyah, Aldiansyah Asdian - Ayu Sintianingrum Charles Ronald Harahap Darajat, AU Diah Permata Dikpride Despa Giri Woryanto Hakim, Lukmanul Hekson Yulian N Herri Gusmedi Hidayat Hidayat Nadia Julian Putri Noer Soedjarwanto Noer Sudjarwanto Osea Zebua Osea Zebua Rahmattulloh Rahmattulloh Soedjarwanto, Noer Arif Sri Purwiyanti Syaiful Alam Syaiful Alam Syuja Asyraf Fardhan T Rausyan Hilmy Umar, Muhammad Abdullah Venus Asadila Yul Martin