PEMODELAN PERSAMAAN MODUL PHOTOVOLTAIC YANG MEMILIKI DIODA BYPASS PADA SAAT GANGGUAN SHADING

Andrew Jussac Jusran, Chairul G. Irianto, Henry Candra
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Abstract

Photovoltaic (PV) modules are devices that convert sunlight to electricity. The usages of PV modules become more popular from time to time. In a certain condition, PV modules can have multiple problems. One of many problems found in usages of PV modules is shading. Shading is a condition where sunlight is blocked by objects that makes shadow around the surface of PV modules which lead to a decreasing of productivity and efficiency in power generation. Shading issue can  occurs to a single cell or group of cells in PV module which not only can cause a drastic decreasing in power generation but also can cause structure failure and fire. Equation modeling is needed to represent power, current, and voltage characteristic of PV module when shading occurs. Method that used in this research is a synthesis of several method which is detailed equation modeling of PV module and varying shading amount of a PV module using Simulink MATLAB program. The results shows that current and voltage characteristic and power and voltage characteristic are representing PV module behaviour in shading condition which can be analysed and lead to further research and development of PV devices and systems.
ABSTRAK:Modul Photovoltaic (PV) adalah perangkat yang mengubah sinar matahari menjadi energi listrik. Penggunaan modul PV menjadi semakin populer dari waktu ke waktu. Pada kondisis tertentu, modul PV dapat mengalami gangguan. Salah satu gangguan dalam penggunaan modul PV adalah shading. Shading adalah kondisi di mana sinar matahari terhalangi oleh suatu objek, di mana objek tersebut menghasilkan bayangan pada permukaan modul PV yang mengakibatkan berkurangnya produktifitas dan efisiensi dari pembangkitan listrik. Gangguan shading dapat terjadi pada satu sel PV atau beberapa sel PV yang tidak hanya mengakibatkan berkurangnya pembangkitan listrik secara drastis tetapi juga kerusakan struktur dan kebakaran. Pemodelan persamaan diperlukan untuk merepresentasi karakteristik daya, arus dan tegangan pada saat terjadinya gangguan shading. Metode yang digunakan pada penelitian tersebut adalah sintesa dari beberapa metode yaitu pemodelan detail persamaan modul PV dan memvariasikan besaran gangguan shading pada modul PV menggunakan program Simulink MATLAB. Hasil dari penilitan memperlihatkan karakteristik arus dan tegangan dan karakteristik daya dan tegangan merepresentasikan modul PV pada saat mengalami shading di mana hasil tersebut dapat dianalisis dan digunakan untuk penelitian yang lebih lanjut dan pengembangan dari perangkat PV dan sistem PV

Keywords

Photovoltaic; Shading; Bypass Diode; Current and Voltage Characteristic; Power and Voltage Characteristic; Photovoltaic; Shading; Dioda Bypass, Karakteristik Arus dan Tegangan; Karakteristik Daya dan Tegangan

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