Akmal, Raihan Ihsanul (2023) Rancang Bangun Lead Acid Battery Management System pada Photovoltaic untuk Mencegah Overcharge dan Overdischarge. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk merancang dan membangun Sistem Manajemen Baterai Asam Timbal untuk sistem fotovoltaik guna mencegah kondisi overcharge dan overdischarge yang dapat merusak baterai. Sistem fotovoltaik umumnya digunakan dalam aplikasi energi terbarukan, dan baterai asam timbal merupakan salah satu jenis yang umum digunakan dalam sistem tersebut. Dalam penelitian ini, Sistem Manajemen Baterai Asam Timbal yang efektif dan efisien dirancang dan diimplementasikan. Sistem ini terdiri dari komponen kontrol yang dapat memantau tegangan baterai dan mengendalikan arus masuk dan keluar dari baterai. Metode kontrol yang digunakan dalam penelitian ini adalah kontrol fuzzy untuk mengoptimalkan proses pengisian, dan metode perturb and observe untuk mengoptimalkan proses pengosongan. Metode ini memanfaatkan data tegangan dan arus sebagai masukan, dan menghasilkan sinyal kontrol yang sesuai untuk mengatur pengisian dan pengosongan baterai secara optimal. Hasil pengujian menunjukkan bahwa Sistem Manajemen Baterai Asam Timbal yang dirancang efektif dalam mencegah kondisi overcharge dan overdischarge. Sistem dapat mengatur tegangan selama proses pengisian dengan constant voltage yang memiliki effisiensi sebesar 95.12%. Sistem juga dapat melakukan proses constant current discharging dengan nilai effisiensi sebesar 99.36%. Buck converter yang digunakan dalam sistem memiliki effisiensi sebesar 84.04%. Serta dalam melakukan monitoring state of charge dari baterai didapatkan akurasi sebesar 75.73%. Oleh karena itu, melalui sistem manajemen baterai yang telah dirancang didapatkan bahwa alat mampu menjalankan aksi untuk mencegah overcharge dan overdischarge, serta memiliki nilai effisiensi proses charging/discharging sebesar 93.7%.
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This research aims to design and build a Lead Acid Battery Management System for photovoltaic systems to prevent overcharge and overdischarge conditions that can damage the battery. Photovoltaic systems are commonly used in renewable energy applications, and lead acid batteries are one of the commonly used types in such systems. In this study, an effective and efficient Lead Acid Battery Management System is designed and implemented. The system consists of control components that can monitor the battery voltage and control the incoming and outgoing currents of the battery. The control method used in this research is fuzzy control to optimize the charging process and perturb and observe method to optimize the discharging process. These methods utilize voltage and current data as inputs and generate appropriate control signals to regulate the charging and discharging of the battery optimally. The test results show that the designed Lead Acid Battery Management System is effective in preventing overcharge and overdischarge conditions. The system can regulate the voltage during the charging process with a constant voltage that has an efficiency of 95.12%. The system can also perform constant current discharge with an efficiency value of 99.36%. The buck converter used in the system has an efficiency of 84.04%. Furthermore, in monitoring the state of charge of the battery, an accuracy of 75.73% is obtained. Therefore, through the designed battery management system, it is found that the device is capable of taking action to prevent overcharge and overdischarge, and it has an efficiency value of 93.7% for the charging/discharging process.
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