Desain dan Implementasi Equalizer Pengisian Daya Dua Tahap dengan Modulasi Seleksi Sel Switch Baterai Lithium-Ion Terhubung Seri

S, Fikri Ramadhan (2020) Desain dan Implementasi Equalizer Pengisian Daya Dua Tahap dengan Modulasi Seleksi Sel Switch Baterai Lithium-Ion Terhubung Seri. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kendaraan listrik atau kendaraan listrik hybrid menggunakan baterai sebagai penyimpan energi listrik untuk sumber energi penggerak berjenis baterai Lithium-Ion yang dihubungkan secara seri, karena memiliki karakteristrik yang baik. Pengisian dan pengosongan energi pada baterai Lithium-Ion secara berulang dapat menyebabkan ketidakseimbangan muatan di antara tiap sel baterai, karena setiap sel baterai memiliki perbedaan yang tak terhindarkan dalam karakteristik kimia dan listrik. Ketidakseimbangan muatan sel baterai akan mengurangi total kapasitas penyimpanan dan mengurangi lifetime baterai. Untuk mengatasi masalah ini, equalizer pengisian daya dua tahap dengan modulasi seleksi sel switch dapat meningkatkan pemerataan pengisian baterai tiap sel. Metode ini menggunakan konventer dc-dc dua tahap dan sakelar pemilihan sel baterai. Konverter dc-dc yang digunakan yaitu konventer flyback dc-dc dikarenakan flyback konverter adalah satu-satunya konverter yang besifat isolated. Sakelar pemilihan sel akan memanajemen pengisian baterai tiap sel, sehingga pada saat proses charging tidak terjadi overcharging atau undercharging pada salah satu sel. Oleh karena itu dengan adanya equalizer pengisian daya dua tahap dengan modulasi seleksi sel switch proses charging baterai Lithium-Ion yang disusun seri dapat berkerja dengan aman dan membuat lifetime baterai lebih lama. Dari pengujian ini telah dibuktikan bahwa implementasi equalizer baterai telah bekerja dengan baik, dengan beda tegangan tiap sel baterai sebesar 0.01 Volt dan lama waktu proses ekualisasi bergantung dengan besar selisih tegangan antar sel baterai yang diuji. =========================================================== Electric vehicles or hybrid electric vehicles use a battery as a storage for electrical energy to drive, the battery type is Lithium-Ion battery that is connected in series, because it has good characteristics. Charging and discharging energy on a Lithium-Ion battery repeatedly can cause an unbalanced charge between each battery cells, because each battery cell has an inevitable difference in chemical and electrical characteristics. An unbalanced battery cell charge will reduce total storage capacity and reduce battery lifetime. To overcome this problem, a two-stage charging equalizer with switch cell selection modulation can can equalize the voltage of each battery cell. This method uses a two-stage dc-dc converter and a battery cell selection switch. The dc-dc converter used is the dc-dc flyback converter because the flyback converter is the only converter that is isolated. The cell selection switch manages battery charging for each cell, so that during the charging process there is no overcharging or undercharging in one cell. Therefore, with a two-stage charging equalizer with modulating cell selection switch the charging process of Lithium-Ion batteries that is connected in series can work safely and make the battery lifetime longer. From this test it has been proven that the implementation of the battery equalizer has worked well, with a voltage difference of each battery cell of 0.01 Volts and the length of the process of equalization depends on the difference in voltage between the battery cells tested.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Flyback Converter, Lithium-Ion Battery, Cell Selection Switch, Equalizer. Flyback Konverter, Baterai Lithium-Ion, Seleksi Sel Switch, Equalizer.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electric current converters, Electric inverters.
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: Fikri Ramadhan S
Date Deposited: 15 Aug 2020 03:47
Last Modified: 15 Aug 2020 03:47
URI: https://repository.its.ac.id/id/eprint/78240

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