Rahman, Irham Izzatur (2019) Desain dan Implementasi DC-DC Bidirectional Cuk Converter dengan Average Current Mode Control untuk Pengujian Baterai Lead-Acid. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baterai lead-acid merupakan elemen utama dalam pengembangan kendaraan listrik, UPS, dan sistem pembangkit hibrid. Pada keadaan riil kapasitas dari baterai akan mengalami perubahan sesuai dengan besar arus yang ter-discharge dari baterai. Pada pengoperasian baterai sendiri biasa menggunakan acuan tegangan cut-off. Namun batas tegangan cut-off baterai biasa didapatkan dengan arus discharge yang konstan, dimana hal ini tidak dapat dilakukan di lapangan. Acuan lain yang dapat digunakan dalam mengoperasikan baterai adalah dengan menggunakan estimasi state of charge (SoC) baterai. Metode estimasi SoC yang umum digunakan adalah coulomb counting karena dapat dilakukan secara real-time. Pada penelitian ini akan dilakukan pengujian kurva karakteristik discharge dan estimasi SoC baterai menggunakan coulomb counting. Baterai yang diuji adalah jenis valve regulated lead-acid (VRLA) dengan rating 12V 7,2Ah. Untuk mengimplementasikan sistem pengujian digunakan DC-DC Bidirectional Cuk Converter dengan menggunakan Average Current Mode Control, dimana skema pengujian baterai umum dimodifikasi agar penggunaan daya lebih efisien. Dari hasil pengujian sistem baru ini dapat bekerja dengan baik. Pada pengujian baterai VRLA didapatkan kurva karakteristik discharge dan kelebihan-kekurangan estimasi SoC menggunakan metode coulomb counting.
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Lead-acid batteries are key element in the development of electric vehicles, UPS, and hybrid power generation systems. In real conditions the capacity of the battery will change according to the amount of discharge current flowing from the battery. The operation of the battery itself usually uses cut-off voltage as reference. However, the cut-off
voltage limit of the battery is normally obtained by using constant discharge current, which is not possible in the field application when load is always change. Another more appropriate reference to use in operating batteries is to use an estimation of the state of charge (SoC) of the battery. The SoC estimation method commonly used is coulomb counting because it can be done in real-time. In this study we will test the discharge characteristics curve and estimating battery SoC using coulomb counting. Battery that used in this study is valve regulated lead-acid (VRLA) type with 12V 7.2Ah rating. To implement the testing system, DC-DC Bidirectional Cuk Converter with Average Current Mode Control is used, where a common battery testing scheme is modified to make power used in more efficient ways. From the results of testing this new system can work well. In the VRLA battery testing the discharge characteristics curve and the advantages and disadvantages of the SoC estimation using the coulomb counting method were obtained and analyzed.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSE 621.312 42 Rah d-1 2019 |
| Uncontrolled Keywords: | Bidirectional Cuk Converter, Coulomb Counting, Lead-Acid Battery |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2945 Lead-acid batteries. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Rahman Irham Izzatur |
| Date Deposited: | 12 Jan 2023 02:38 |
| Last Modified: | 12 Jan 2023 02:38 |
| URI: | http://repository.its.ac.id/id/eprint/63491 |
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