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All Journal ELKHA : Jurnal Teknik Elektro Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Semesta Teknika MEDIA BINA ILMIAH JURNAL PHOTON
Hendro Cahyono, Hendro
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Journal : ELKHA : Jurnal Teknik Elektro

 1 
Implementasi Teknik P&O Pada Optimisasi Daya Pengisian Baterai Dari Sel Surya Rianda, Rianda; Cahyono, Hendro
ELKHA : Jurnal Teknik Elektro Vol. 9 No. 2, October 2017
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1120.512 KB) | DOI: 10.26418/elkha.v9i2.24355

Abstract

Abstract– Pada sistem konversi pembangkit listrik tenaga surya, teknik MPPT merupakan suatu teori atau gagasan yang bertujuan   menemukan cara bagaimana mendapatkan nilai puncak energi, atau daya untuk kuat penyinaran matahari yang berubah-ubah. Pada sistem pengisian baterai dari sel surya yang diusulkan, teknik P&O (perturb and observation) merupakan salah satu dari teknik MPPT, yang dipilih berdasarkan pertimbangan bahwa teknik ini memiliki algoritma sederhana dan mampu  menjejak potensi daya maksimum dari sel surya. Bertitik tolak dari algoritma P&O, disusun deskripsi lanjut untuk mendapatkan bentuk implementasi yang tepat pada bidang elektronika. Dari hasil deskripsi dan  ketersediaan komponen lokal, dilakukan perancangan untuk memenuhi tujuan implementasi yang tepat. Rancangan sistem ini terdiri dari bagian- bagian yang saling mendukung dan bekerja sesuai dengan prinsip yang diinginkan.  Setelah melalui proses perancangan dilanjutkan dengan pembuatan prototipe perangkat elektronika. Melalui percobaan berupa pengukuran dan pengujian diperoleh data, ketika dianalisa dapat dilihat pola dan karakter yang yang terlihat  memenuhi kriteria rancangan. Realisasi sistem pengisian baterai dari sel surya ini terwujud tidak terlepas dari kendala dan proses perbaikan, meskipun demikian dapat dikatakan sistem memenuhi kriteria rancangan seperti biaya rendah, rugi-rugi konversi daya kurang dari 30% dan konverter daya bekerja dengan baik pada tiap kuat penyinaran yang berbeda. Keywords- teknik MPPT, P&O, implementasi dan perangkat elektronika.
Web-Based Presence Application Development at Pontianak State Polytechnic Cahyono, Hendro; Hasan, Hasan; Siswanto, Lindung; Sufandi, M. Ridhwan
ELKHA : Jurnal Teknik Elektro Vol. 13 No. 1 April 2021
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v13i1.44831

Abstract

The employees' presence is an important factor for an institution, which is relate to discipline and has an impact on the employee's performance.  Therefore, it is necessary to have specific data collection to record presence, absenteeism, and work activities that has done every day so that employee performance record in real-time and proper. There are many ways that can be done to achieve a good presence information system, one of them is using computer and mobile phone technology which is implemented with a website-based presence application. At the Pontianak State Polytechnic, finger print machine used in the presence process system, but it is still lack in efficiency and effectiveness in data collection, data retrieval as well as data recap calculations, which require a relatively long time. Besides, the bigger risk of error and loss of presence data.  Based on problems, a Web-Based Presence Application Development Information System created at the Pontianak State Polytechnic. The research method used in data collection, which includes research methods, interviews and literature. While software development uses a waterfall model which includes requirements analysis, design, coding, testing and implementation. This web-based presence application can provide convenience in the employee presence process, data search and presence recap calculations, and minimize loss and errors in recording employee presence data. Based on web-based presence application testing and evaluation to thirty-four employees of Pontianak State Polytechnic, it stated that the web-based presence application is suitable for used by all employees of Pontianak State Polytechnic.
Co-Authors Ahmad Kafrawi Nasution, Ahmad Kafrawi Hasan Hasan Muhammad Ridhwan Sufandi Mustaqim - Putri Nawangsari, Putri Rianda, Rianda Rina Dwi Yani, Rina Dwi Siswanto, Lindung Tri Pratomo, Tri