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All Journal Jurnal Sains dan Teknologi Jurnal Teknik Elektro Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika PROtek : Jurnal Ilmiah Teknik Elektro Jurnal Pengabdian UntukMu NegeRI Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Sinergitas PkM & CSR Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal of Applied Materials and Technology IGKOJEI: Jurnal Pengabdian Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Sewagati BATOBO: Jurnal Pengabdian Kepada Masyarakat
Rosma, Iswadi Hasyim
Jurusan Teknik Elektro, Fakultas Teknik, Universitas Riau
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Veterinary Other

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Algoritma Sistem Koordinasi Pembangkit Listrik Hibrid PV-Generator 3 Fasa wahyudi, Agus; Rajagukguk, Antonius; Rosma, Iswadi Hasyim
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The need for electrical energy is increasing along with population growth and increasing community activities, so it is necessary to add new energy sources to reduce fossil resources. One alternative renewable energy issolar energy using photovoltaic (PV). However, so that the load can still be supplied optimally, one alternative solution is to use a hybrid generator technique. Hybrid system is the concept of combining two or more energysources. One of the hybrid power plants that has the potential to be developed is a combination of PV and generator. This research makes a hybrid PV-generator generating system to serve the maximum load and complement each other's shortcomings and add a battery as an additional generator. This research creates a coordination of generators to interact with each other between generators to serve load patterns in a structuredand simulated manner in MATLAB 2016a. The design of the hybrid power plant is PV with 58 kwp power, 30 kAh battery and 25 kva generator. The results in this study show the performance of each generator whenserving the load. Loads of 10 kw, 20 kw and 30 kw are supplied by PV and batteries. At peak load, the load is supplied by a hybrid PV-generator or battery-generator. From the simulation results show that the generator isable to overcome any given load with a given coordination system.Keywords : Photovoltaic (PV), Hybrid, generator, load, Matlab 2016a
Analisis Pengaruh Posisi Peletakan Magnet Permanen Di Rotor Terhadap Kinerja Generator Sinkron Magnet Permanen Harahap, Elco Maghfira Arfi; Rosma, Iswadi Hasyim; Hamzah, Amir
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Permanent Magnet Synchronous Generator (PMSG) has the same construction as conventional synchronous generators. The rotor in the synchronous generator requires DC current feeding to produce GGL while the PMSG rotor does not need DC current feeding because the magnetic field is generated from a permanent magnet. With this permanent magnet, it causes a cogging effect which inhibits the rotation of the stator. To reduce the cogging effect, it is necessary to change the position of the magnet in the motor. This scientific paper discusses the effect of the positioning of a Permenen magnet in the rotor on PMSG on the output of cogging voltage and torque from the modeling of PMSG magnets parallel and PMSG magnets of Skew. The PMSG design that was made refers to the specifications of the outer dimensions of 450 mm and a thickness of 150 mm with the Interior Permanent Magnet (IPM) type rotor using a combination of 24 slots 8 Poles with a rotating rotor at 750 rpm. To get the output values, PMSG must first be modeled into the software to be analyzed. When modeling the PMSG, it turns out that the mesh size of the generator constituent materials affects the level of accuracy at solving. So that the calculation results of the generated voltage, output power and torque will be more accurate. However, it takes a long time during the testing process. Based on the calculations and the results of the tests that have been carried out, it can be concluded that the position of the magnetic placement affects the generated output voltage. From the test results, a magnet with a skew position has a lower voltage than a normal / parallel magnet position. This is because the flux from the skew magnet that enters the stator teeth is imperfect plus there is a collision of flux / field direction from two different poles in one stator gear at the same time. As a result, the generated field becomes smaller. Then the second from the test results it is concluded that the positioning of the magnet affects the cogging torque. magnets that are placed in a skew position have a smaller cogging torque than parallel PMSG modeling. Keywords : Back EMF (Electromotive Force), Ke (Constant Efficiency), flux lingkage, cogging
Analisis Penyetelan Relai Arus Lebih Dan Gangguan Tanah Sebagai Proteksi Pada Jtm 20 Kv Siregar, M. Ikhsan; Hasyim Rosma, Iswadi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This article uses observations aimed at analyzing the settings for overcurrent relays and ground disturbance in the 60 MVA transformer. With the data obtained such as CB data, transformers, overcurrent relay specifications, ground fault relays, load data, and channel data used to obtain 3 phase short circuit current, 2 phase and one ground phase on the incoming and feeder side using ETAP simulation 12.6.0. For overcurrent relays that are on the Incoming side using the calculation of TMS = 0.19s while on the TMS field = 0.24s. The ground fault relay on the incoming side uses the calculation of TMS = 0.2s while those in the field are 0.24s. The overcurrent relay in the folding feeder uses the TMS = 01s calculation while in the TMS field = 0.12s. So the overcurrent relay and ground disturbance relays on the Incoming side of the field must be rearranged.Keywords: protection, overcurrent relay, ground fault relay, ETAP 12.6.0
Otomatisasi Sistem Fertigasi Tetes untuk Tanaman Berbasis Mikrokontroler Rosma, Iswadi Hasyim; Sukma, Dian Yayan; Solihin, Ikhram Minata
Jurnal Teknik Elektro Vol 13, No 1 (2021): Jurnal Teknik Elektro
Publisher : Jurusan Teknik Elektro, Fakultas Teknik, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jte.v13i1.31123

Abstract

The process of manual fertilization and irrigation of plants has disadvantages such as it requires human labor and is inefficient in the use of fertilizers and water sources. Therefore, the purpose of this research is to design and develop an automatic fertigation system. The method used in this research is a drip fertigation technique where the fertigation liquid that has been stirred is placed in a tank with 100 cm height from ground. With the gravitational force, the fertigation liquid is distributed through pipes, hoses and emitters around the plant. While the control system and automation of fertigation distribution to plants is carried out based on a microcontroller that need the condition of soil moisture values around the plant. If the watering time and humidity values are met, the electronic valve will open so that the fertigation liquid flows from the tank to the plants. Furthermore, in this study the tests were carried out to determine the uniformity coefficient and debit of drip fertigation. From the results, it shows that the emitter’s debit influenced by the liquid level in the tank. The uniformity coefficient obtained in the two tests is greater than 90%. From the two tests carried out from the moisture sensor 1 and 2, it shows the mean percentage error for both sensor is less than 1.7%, while the percentage error of soil moisture sensor 1 is 1.6% and the percentage error of soil moisture sensor 2 is 1%, respectively. Meanwhile, from the ultrasonic sensor testing it was obtained 0% of error. It also shows from the testing conducted that the fertigation system works very well and successfully.
Pengaruh Hubungan Belitan Trafo Dan Variasi Beban Terhadap Total Harmonic Distortion S, Rocky Samuel; Rosma, Iswadi Hasyim; Firdaus, Firdaus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Transformers used in generator are generally 3 phase transformers. In the transformer there is a role that is to move and change the amount of electrical energy from one or more electrical circuits to another circuit. In the use of transformers, there many advantages, but there are also disadvantages such as harmonic distortion which can cause power losses and decreased working capacity. Therefore, this thesis aims to analyze the effect of transformer winding type and transformer loading conditions on the harmonic distortion. In this study used supporting tools namely resistive and induktive loads and to see the THD level using the KYORITSU 6310 Power Quality Analyzer. And the variation of the entanglement relationship used is the wye and delta relationship. The test result concluded that the relationship between wye-wye and resistive load had the highest THD percentage of 44,35% dan delta-delta relationship had the lowest THD percentage of 3.06%. Keywords : harmonics, transformators, THD, power quality analyzer.
Effect Of Solar Radiation On Module Photovoltaics 100 Wp With Variation of Module Slope Angle Azriyenni Azhari Zakri; Iswadi Hasyim Rosma; Dohardo P H Simanullang
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 6, No 1: March 2018
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v6i1.351

Abstract

Solar photovoltaic generation system is a very promising type of renewable energy, particularly when it is implemented in the tropical country like Indonesia where it receives a huge amount of sunshine. Solar photovoltaic generation system can be utilised to supply power for different types of consumer, namely utility grids, industrials as well as household. This article discusses the effect solar radiation to the photovoltaic module with different slope angles namely; 300, 400 and 500 respectively. It was used a 100 Wp solar module in the research. It is not only the slope angle of module analysed in this article but also the weather condition such as: sunny or cloudy conditions. The performances of solar photovoltaic at temperature ranging from 280C to 500C are analysed significantly. The results showed that the above conditions affected the voltage generated by solar photovoltaic system. Finally, the results of this test will be compared with the simulation results of photovoltaic system modeling using Matlab/Simulink.
KETERSEDIAAN SISTEM PEMBANGKIT LISTRIK BERBASIKAN TENAGA SURYA DI KOTA PEKANBARU Dian Yayan Sukma; Iswadi Hasyim Rosma
Jurnal Sains dan Teknologi Vol 16, No 2 (2017): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1271.327 KB) | DOI: 10.31258/jst.v16.n2.p62-69

Abstract

Energi surya sangat murah untuk didapatkan, tetapi besarnya berfluktuasi setiap saat dan berbeda di setiap wilayah. Pemanfaatan potensi energi terbarukan ini dalam menghasilkan energi listrik diprioritaskan untuk daerah terisolasi atau ditempatkan pada sistem distribusi (generator terdistribusi) yang secara langsung melayani kebutuhan beban. Durasi pembangkit listrik tenaga surya dalam menyediakan energi listrik di grid adalah tidak tetap dan berubah setiap saat. Hal ini disebabkan oleh perubahan potensi cuaca (radiasi matahari) dan pemilihan teknologi yang diterapkan. Ketersediaan sistem generator dengan pola operasi PLTS yang berdiri sendiri diperoleh 44,3% untuk area Panam dan 28,6% untuk area Sudirman. Secara keseluruhan, ketersediaan rata-rata sistem pembangkit tenaga surya (PLTS) untuk kota Pekanbaru adalah 36,45%.
Pengadukan Pupuk Cair Otomatis Berbasis Mikrokontroler pada Sistem Fertigasi Pintar ISWADI HASYIM ROSMA; DIAN YAYAN SUKMA; SATRIA SARE
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 4 (2021): ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektro
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i4.827

Abstract

ABSTRAKPengadukan pupuk cair secara manual memiliki kekurangan, yaitu rendahnya akurasi campuran hanya sekitar 50% sehinggga dibutuhkannya pengadukan pupuk otomatis untuk meningkatkan akurasi campuran pupuk dan air. Tujuan penelitian ini adalah untuk melakukan perancangan, pembuatan, serta analisis sistem pengadukan pupuk otomatis berbasis mikrokontroler. Bagian dari sistem pengaduk pupuk dibagi menjadi dua bagian utama. Bagian pertama adalah komponen mekanik yang terdiri dari tangki air, tangki pupuk cair, dan motor pengaduk. Sedangkan bagian kedua adalah sistem kendali berupa mikrokontroler arduino untuk mengatur volume air, volume pupuk cair, dan lama pengadukan. Dari hasil pengujian didapatkan bahwa keberhasilan pencampuran pupuk cair EM4 adalah sebesar 99,561%, sedangkan untuk pupuk hijau sebesar 98,551%. Sebagai kesimpulan, sistem fertigasi pintar yang dibangun dapat beroperasi dengan baik dan akurasi diatas 90%.Kata kunci: Sistem Fertigasi, Arduino, Pengadukan, Pupuk cair, Air ABSTRACTManual mixing of liquid fertilizers has drawbacks, namely the low accuracy of the mixture, only about 50%, so that automatic fertilizer mixing is needed to increase the accuracy of the fertilizer and water mixture. The purpose of this study was to design, manufacture, and analyze a microcontroller-based automatic fertilizer mixing system. The part of the fertilizer mixing system is divided into two main parts. The first part is a mechanical component consisting of a water tank, a liquid fertilizer tank, and a stirrer motor. While the second part is a control system in the form of an Arduino microcontroller to regulate the volume of water, the volume of liquid fertilizer, and the stirring time. From the test results, it was found that the success of mixing EM4 liquid fertilizer was 99.561%, while for green manure it was 98.551%. In conclusion, the smart fertigation system built can operate well and the accuracy is above 90%.Keywords: Fertigation System, Arduino, Stirring, Liquid Fertilizer, Water
Uji Komparatif Lapangan Jangka Pendek Produksi Energi Solar Photovoltaic Jenis Monocrystalline Dan Polycrystalline Pada Iklim Tropis Tsabitul Khair; Iswadi Hasyim Rosma
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Monocrystalline and polycrystalline are most widely used solar panels in Indonesia. This article discusses the energy production of both types with different tilted angles. The study was conducted by using 20 Wp solar panel. The tilted angles that examined in this research were 0, 15, 30 and 45 degree, respectively. The location of research was chosen at Faculty of Engineering building at Universitas Riau, Indonesia since it reflects the tropical weather condition. It has been found that monocrystalline produced higher energy compare with polycrystalline. The 0 and 15 degrees tilted angles gave the highest energy production of solar photovoltaic compare with the rest of tilted angles.Keyword: Monocrystalline, Polycrystalline, Solar Photovoltaic , Tilted Angle, Weather
Rancang Bangun Aerator Menggunakan Penggerak Motor Satu Fasa Dan Sistem Otomatisasi Berbasis Smart Relay Abdul Gafar Arsaf; Iswadi Hasyim Rosma
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Oxigen in the water is obtained from 2 processes specifically the first is, photosynthesis by water plants and the second is aeration which included in the diffusion process. Aerator is a device that serves to produce oxygen through the diffusion process for the needs of living creatures in the water. Aerators themselves have several types, those are ; gravity aerator (gravity influence), surface aerator (surface), diffusier aerator (mixing), turbine aerator (windmill), and combination. The aerators which designed here are aerator type of turbine (turbine aerator) similar to the aerator used in the research area generally. The purpose in the making of an aerator with this automatic system is to simplify the management and also to reduce the operational costs of the ponds. Aerator is made using 2 pieces of waterwheel with each pin having the same 6 blades with a mill used in ponds at the research site. As the basis of the automation system, the aerator is a smart relay programmed with 2 input which are the light sensor and the sensor temperature parameters in the programming obtained from the results of research on dissolved oxygen levels in the water. From the results of the testing, when dissolved oxygen levels are relatively high in the range of 30mg/L light intensity > 100,000 lux and for temperature < 350 C. Then the results of the data retrieval is made into the input parameters in the programming. The results of the device testing shows that the performance which is as expected. Aerator can work well in increasing oxygen from 8mg/L – 14.4mg/L in 45 minutes and the controller work as programmed when dissolved oxygen level below standard with indication of light intensity < 40 lux and temperature >350 C.Keyword : Aerator, Dissolve Oxygen, Smart Relay
Co-Authors A. Ludfi Nur Kasan A. U. Lawan Abdul Gafar Arsaf Abdul Gafar Arsaf Abubakar Abdulkarim Abubakar Abdulkarim Adamu Halilu Jabire Agus Ika Putra Agus Ika Putra Agus Wahyudi Ahmad Jamaan Ahmad Jamaan Alfian Adri Amanda Khaira Perdana Amir Hamzah Amir Hamzah Antonius Rajagukguk, Antonius Ari Sandhyavitri Ari Sandhyavitri Azmi Abdullah Azriyenni Azhari Zakri Dansarki Nanly Wesley Dian Yayan Sukma Dian Yayan Sukma, Dian Yayan Dicky Rinaldi Dicky Yulvarizal Dohardo P H Simanullang Fajar Restuhadi Fathir Juliando Feblil Huda Feblil Huda Feblil Huda Feblil Huda Febrizal Febrizal Febrizal Ujang Feranita Abdul jalil Feranita Feranita Ferdy Ultra Sony Firdaus Firdaus Fri Murdiya Harahap, Elco Maghfira Arfi Herki Desrizal Hidayatul Catra Burhan Hidayatul Catra Burhan I.S. Madugu Ichsan Maulana Putra Jamarrintan Jamarrintan Muhammad Riski Hanifa N Nazaruddin Nasir Faruk Noveri Lysbetti Marpaung Nurhalim Dani Ali P.U. Okorie Randy Putra Ranto Ramandana Rusdi Masri S, Rocky Samuel Sani Saminu Satibi, Syawal SATRIA SARE Siregar, M. Ikhsan Sobhy Abdelkader Soewignjo Agus Nugroho Soewignjo Agus Nugroho Solihin, Ikhram Minata Suwitno Tsabitul Khair Wallsman Lamtota Nainggolan Yoga Pratama Yogie Rinaldy Ginting