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Pemantauan Parameter Panel Surya Berbasis Arduino secara Real Time Fachri, Muhammad Rizal; Sara, Ira Devi; Away, Yuwaldi
Jurnal Rekayasa Elektrika Vol 11, No 4 (2015)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.014 KB) | DOI: 10.17529/jre.v11i3.2356

Abstract

Monitoring the output parameters of a solar module is required for assessing its performance under real operating conditions. This paper presents a new technique for monitoring the output parameters i.e. current and voltage of solar module directly under real operating conditions. In this new monitoring technique, the output parameters of a solar module can be directly processed in real time condition and their results are displayed in a graph. The monitoring system is developed using microprocessor Arduino Atmega 328P and equipped with calibrated current and voltage sensors, a data acquisition system which is integrated directly into an Excel spreadsheet using the PLX-DAQ application program and a memory card for backup. The monitoring system is connected to a computer using a RS232 serial port. The collected data is saved directly into a spreadsheet and plotted in real time. This technique provides an easy access to the collected data for further analysis.
Perancangan Alat Pencatat Data Kurva Karakteristik Arus dan Tegangan (I-V) Modul Surya Cholis, Cholis; Sara, Ira Devi; Away, Yuwaldi
CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Vol 2, No 1 (2016)
Publisher : PTE FTK UIN Ar-Raniry

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Abstract

Untuk menampilkan kurva karakteristik I-V diperlukan sebuah peralatan dalam menelusuri keluaran sebuah modul surya yang disebut IV Tracer. IV Tracer bekerja berdasarkan nilai tegangan kerja yang divariasikan terhadap sebuah modul surya mulai dari titik nol sampai nilai tegangan rangkaian terbuka (open circuit). Berdasarkan hasil percobaan menggunakan rangkaian snubber dengan nilai kapasitor 47 uF, tahanan 5 Ω dan dioda FR207 memperlihatkan bentuk kurva arus dan tegangan yang sesuai datasheet dengan selisih rata-rata sebesar 8,89 % berdasarkan parameter nilai modul surya yang diuji. Data yang diperoleh merupakan nilai variasi tegangan saat switching MOSFET IRF540 selama 1600 milisekon dengan mengumpulkan sebanyak 52 titik pengujian. IV tracer yang dirancang memiliki batasan sebesar 200 mA - 8V berdasarkan pengaturan yang dilakukan pada layar TFT 1,8”. Kata kunci:
Simulasi Pelacakan Titik Daya Maksimum Modul Surya dengan Metode Grey Wolf Optimization Faulianur, Rizki; Sara, Ira Devi; Arnia, Fitri
Jurnal Rekayasa Elektrika Vol 14, No 1 (2018)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1561.995 KB) | DOI: 10.17529/jre.v14i1.8973

Abstract

The photovoltaic module has a nonlinear current and voltage characteristic curve where there is a maximum power point to be tracked to avoid wasted energy. Some methods for tracking the maximum power points have been developed such as perturb and observe (P& O), Incremental Conductance (IC), and Hill Climbing (HC). However, those methods were not so accurate to find the maximum power point and they were also slow to respond the changes in solar radiation and temperature. To overcome the shortcomings of the method, a new optimization approach was developed. This method is called Gray Wolf Optimization (GWO). It work based on the wolf behavior in capturing the prey. In this study, it will be determined to what extent the GWO method can track the maximum working point of solar modules that undergo changes in radiation and working temperature quickly and accurately. This research was conducted by simulation using Matlab/Simulink by comparing the extract of power GWO method with its power characteristics. The results obtained by the GWO method trace maximum power with an average accuracy rate of 99.14 % with time less than 0.1 second. From this data, it can be concluded that the GWO method successfully responds well and accurately to changes in radiation and temperature.
Disign SPWM multilevel inverter single phase15 level Effendi, Effendi; Sara, Ira Devi; Lubis, Rakhmad Syafutra
Jurnal Rekayasa Elektrika Vol 12, No 2 (2016)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (902.243 KB) | DOI: 10.17529/jre.v12i2.3966

Abstract

Abstract — Fifteen level single phase multilevel inverter is constructed using power circuit consist of 7 MOSFETs as switch, 7 indevendent DC sources, 7 diodes, and a H-Bridge. Trigering technic using sinusoidal pulse width modulation (SPWM) with 14 carrier wave, which pure sinusoidal wave as reference, SPWM circuit is disained using Op-Amp as comparator and some logic gates such as AND, OR and NOT gate in order to triggering S1, S2, S3, S4, S5, S6 and S7. By modificated carrier wave from triangular into DC source wave, this MLI produces THD output wave equal to 5.5019684%, while using methodes Phase Disposition PWM (PD PWM), Phase Shift PWM (PS PWM), and Carrier Overlapping PWM (CO PWM) produces THD more than proposed method, this system simulated using PSIM program. Keywords: Multilevel Inverter, SPWM, THD, PSIM
Studi Kasus Kelayakan Penerapan Sistem Hybrid Building Applied Photovoltaics (BAPV)-PLN pada Atap Gedung Politeknik Aceh Ikhsan, Rachmad; Sara, Ira Devi; Lubis, Rakhmad Syafutra
Jurnal Rekayasa Elektrika Vol 13, No 1 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1063.012 KB) | DOI: 10.17529/jre.v13i1.6071

Abstract

With the undeveloped BAPV(Building Applied Photovoltaics) at Office Building and Public Facilities, Caused the high price of solar modules and the lack the economic study on the use of solar modules that housed in the Banda Aceh region. Furthermore, the price of solar modules is expensive, so people think it will cost so much funds to building a BAPV’s system. These problems could be overcomed if the existing technical studies and economic studies of the application of the BAPV’s system. This study aims to assess the application of the BAPV’s system on institutions  building in terms of technical and economic value, in this case the building that is used as the study object is the Polytechnic Aceh’s Building. The method that used in the technical studies are theoretical calculations and simulations using helioscope software, while the methods used for economic studies is using the methods of cost-benefit analysis (cost benefit analysis). The method used to find the NPV (Net Present Value), PP (Payback Period), IRR (Internal Rate of Return), and BCR (Benefit Cost Ratio). If the average value of solar radiation reaching 4.79 kWh / m2 / day and the average daily energy requirement is 592 kWh, the energy generated from BAPV-PLN hybrid system on the roof of the object building will reach the amount of 237 MWh/year with the capacity charge controller used is 7490 A and the capacity of the battery used is 64.487 Ah. Panel tilt angle used is 25o and the type of panel used is Monocrystalline manifold. From the economic value will obtained NPV value of Rp. 20.022.106.937, PP during 5,2 years, IRR of 36% and 3,49 of BCR. Based on the evaluation results of the feasibility study, the project of hybrid BAPV-PLN’s system on the roof of the Polytechnic  Aceh’s  building can be realized, because its already meet the criteria of the feasibility study to make the systems get established in real term.
Pengaruh Heatsink Terhadap Kinerja Modul Surya Sya?rani D, T. Mizan; Sara, Ira Devi; Hilma Sari, Laina
Jurnal Nasional Komputasi dan Teknologi Informasi (JNKTI) Vol 2, No 1 (2019)
Publisher : Program Studi Teknik Informatika, Fakultas Teknik. Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.837 KB) | DOI: 10.32672/jnkti.v2i1.1051

Abstract

Panas matahari yang diserap oleh modul surya dapat menaikkan suhu modul surya dan menurunkan tegangan keluarannya. Oleh karena itu perlu usaha untuk menurunkan suhu modul surya agar kinerja modul surya agar tetap optimal. Pemasangan bahan heatsink digunakan untuk mendinginkan modul surya. Pemakaian heatsink mampu menurunkan suhu modul surya sebesar 45,9oC lebih besar daripada tanpa menggunakan heatsink  53,3oC sedangkan tegangan keluaran dari modul surya mampu ditingkatkan menjadi 20,03 volt.  Dari hasil penelitian dapat disimpulkan bahwa pemakaian bahan heatsink lebih baik untuk menurunkan suhu modul surya daripada tanpa menggunakan heatsink.
Studi Simulasi Aerodinamika Airfoil dan Prediksi Performa Picth Tetap Turbin Angin Poros Tegak (Darrieus) terhadap Output Power untuk Aplikasi Kecepatan Angin Rendah Priyanto, Wahyu; Sara, Ira Devi; Lubis, Rakhmad Syafutra
Jurnal Nasional Komputasi dan Teknologi Informasi (JNKTI) Vol 2, No 1 (2019)
Publisher : Program Studi Teknik Informatika, Fakultas Teknik. Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.131 KB) | DOI: 10.32672/jnkti.v2i1.1049

Abstract

Turbin angin sumbu vertikal adalah turbin angin yang sangat efektif di terapkan  ada wilayah  perkotaan. Integrasi  dengan infrastuktur bangunan kota, turbin angin ini sangat memungkinkan untuk bersinergi, serta memiliki respon yang lebih baik dalam turbulensi aliran yang umum di wilayah perkotaan. Artikel ini memberikan kontribusi untuk pengembangan aerodinamis rotor turbin dalam mempelajari turbin angin sumbu vertikal, dengan metode Double Multiple Stream Tube (DMS). Metode DMS ini menggunakan software Qblade untuk mengembangkan serta memprediksi picth yang digunakan secara tetap pada turbin angin vertikal sekala kecil di Banda Aceh dengan koordinat latitude 5.58° longitude 95.37°.Pengembangan mengunakan NACA airfoil  4418 konvensional dan 4418 yang telah di modifikasi bagian trillingnya, telah terbukti dapat meningkatkan nilai koefisien daya (Cp) yang mampu bekerja pada tip speed rasio yang rendah serta lebih efesien dalam pengunaan turbin angin jenis Darrieus poros tegak,dengan mengubah serta menghilangkan pada bagian trilling 10° terbukti mampu meningkatkan nilai koefisien daya (Cp) 26% dengan nilai puncak 43% dari sebelumnya (bentuk airfoil konvensional) dengan nilai Cp 19%  dengan nilai puncak 37% yang mampu bekerja pada rasio tip yang relatif  rendah dengan nilai TSR 1.9 dengan meningkatnya nilai Cp maka efesiensi maksimum dapat didekati.Dengan menggunakan airfoil ini untuk lebih mengutamakan gaya lift sebagai kelebihannya, yang mampu bekerja pada kecepatan angin yang relativ rendah.