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All Journal Aceh International Journal of Science and Technology Widya Teknik
Antonia, Diana Lestariningsih
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences

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Energy Assessment of Solar Power Plant on-Grid Bi-direction 3 KW 1 Phase Joewono, Andrew; Angka, Peter R; Sitepu*, Rasional; Yuliati, Yuliati; Antonia, Diana Lestariningsih
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.30259

Abstract

The potential for generating electricity from solar energy as one of the renewable energies is suitable for rural areas, small populations, or communal systems. However, this type of power plant requires a high investment budget. Photovoltaic power systems must be designed to meet the demand for electrical energy but require a large supply. To build a more efficient system, it is necessary to build a communal system. For a small population, a 3000-watt power generation system is made. It will be distributed directly to users; a 5000-watt system is made for a larger area. It will be distributed directly to users and interconnected between generators with the principle of load control. In this study, a solar power plant (PLTS) was designed with an on-grid bidirectional system. Solar panels' conversion of electrical energy is channeled to users and stored in a battery backup system. This PLTS system produces a maximum power of 3000 watts by using 8 units of 450wp solar panels, an inverter with a 48-volt on or off-grid mode system, and 4 12V 200 Ah backup batteries. From the measurement results, the PLTS system will start converting DC current into AC with a radiation value of 356 to 1258 W/m2. Produce on-grid AC current energy, a maximum of 2297 watts, and charge backup batteries with DC current, a maximum of 14.3 A. This on-grid (bidirectional) backup PLTS system can convert DC current into AC, supply it directly to the network electricity (grid), and perform energy backups when solar energy is not energized.
Detektor Kondisi Psikologis Tubuh Berdasar Suhu Tubuh, Heart Rate dan Galvanis Skin Rensponse yang Terukur pada Tangan Kanan Sinaga, Leon Cicero; Antonia, Diana Lestariningsih; Pranjoto, Hartono; Joewono, Andrew; Gunadhi, Albert; Agustine, Lanny
Widya Teknik Vol. 22 No. 2 (2023): November
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v22i2.4882

Abstract

Penelitian ini mengembangkan perangkat untuk mendeteksi kondisi psikologis tubuh dalam 3 tingkatan yaitu rileks, tenang dan stres berdasarkan pengukuran suhu tubuh (derajat celcius), heart rate (bpm), dan konduktivitas kulit (GSR) hanya pada pada tangan kanan. Kondisi rileks ditandai dengan suhu tubuh antara 36-37 oC, heart rate antara 60-70 bpm, dan GSR  antara 0,4-1 µmho. Kondisi tenang ditandai dengan suhu tubuh antara 35-35,9 oC, heart rate antara 71-90 bpm, dan GSR  antara 1,1-1,4 µmho. Kondisi stres ditandai dengan suhu tubuh lebih rendah dari 33 oC, heart rate antara 100-140 bpm, dan GSR lebih dari 4,1 µmho. Pengujian perangkat dilakukan pada 4 orang subyek sehat. Kondisi rileks dan tenang disimulasikan dengan pengujian pada subjek sesaat setelah bangun tidur. Kondisi stres disimulasikan dengan pengujian  setelah subyek berolahraga ringan selama 15 menit. Hasil pengujian menunjukkan perangkat dapat mengukur suhu tubuh dan heart rate dengan akurasi 98,7% dan 93,7%. Ketepatan deteksi kondisi psikologis tubuh berdasarkan heart rate dan GSR sudah sesuai desain. Hasil pengujian juga menunjukkan bahwa simulasi olahraga pada orang sehat belum dapat memenuhi rentang parameter suhu tubuh untuk kondisi stres. 
Co-Authors Andrew Joewono, Andrew Angka, Peter Rhatodirdjo Gunadhi, Albert Lanny Agustine, Lanny Pranjoto, Hartono Sinaga, Leon Cicero Sitepu*, Rasional Yuliati -