Analisa Proses Charging Dan Discharging Dengan Variasi Permodelan Energy Management System Terhadap Aging Baterai Pada Mobil Phev ITS Konfigurasi Penyalur Daya Seri

Putra, M Naufal Aditya (2022) Analisa Proses Charging Dan Discharging Dengan Variasi Permodelan Energy Management System Terhadap Aging Baterai Pada Mobil Phev ITS Konfigurasi Penyalur Daya Seri. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kendaraan hybrid merupakan salah satu kendaraan alternatif yang mampu mengurangi penggunaan bahan bakar dan permasalahan emisi di dunia. Kendaraan hybrid menggambungkan dua atau lebih sumber energi penggerak, umumnya motor bakar dan motor listrik. Baterai yang menjadi media penyimpanan energi dari motor listrik, dalam siklus hidupnya akan mengalami fase charge/discharge. Proses reversibel ini akan menurunkan kapasitas maksimal dari baterai, hal ini disebut juga sebagai fenomena penuan baterai/ battery aging. Faktor yang sangat berpengaruh terhadap aging pada sel baterai diantaranya adalah depth of discharge (DOD), C-rate (nilai indeks laju arus), dan temperatur. Oleh karena itu, tujuan dari penelitian adalah untuk mengetahui penuan baterai akibat siklus charging dan discharging dengan beberapa variasi mode berkendara/energy management system (EMS) dan mengetahui mode berkendara PHEV ITS yang paling optimal. Pada penelitian ini dilakukan pengembangan mobil plug-in hybrid electric vehicle (PHEV) ITS penyalur daya seri. Penilitian dilakukan dengan metode eksperimen untuk mengetahui kondisi aktual baterai pada mobil PHEV ITS dan simulasi untuk memprediksi umur baterai. Eksperimen dilakukan pada chassis waterbrake dynotest. Dengan tiga variasi pembebanan kecepatan yaitu 17 km/jam, 30 km/jam, dan 50 km/jam. Dari hasil pengujian, didapatkan laju arus, tegangan, SOC, dan temperatur setiap pertambahan waktu 1 menit. Data yang dicatat pada eksperimen dijadikan parameter input untuk analisa data menggunakan software MATLAB Simulink. Laju arus akan digunkan sebagai profil arus yang bekerja pada baterai, tegangan dan SOC akan digunakan untuk menentukan karakteristik baterai yang diinput pada blok generic battery model di MATLAB Simulink, dan temperatur akan dihitung sebagai heat generation pada baterai. Hasil pengujian menunjukkan peningkatan kecepatan menyebabkan laju arus discharge baterai yang semakin tinggi, dan diiringi dengan kenaikan temperatur baterai yang semakin cepat juga. Dari pengukuran perubahan temperature sel baterai, dapat diketahui thermal resistance dari baterai sebesar 0,127 C/W dengan thermal time constant senilai 7224,12 s. Hasil simulasi baterai ageing pada MATLAB Simulink menampilkan laju penurunan kapasitas baterai terhadap siklus yang dialami baterai dengan memperhitungkan laju arus (C-Rate), temperatur, dan depth of discharge (DOD). Dihasilkan penyalaan engine-generator di PHEV dengan mode hybrid SOC 60% dengan 7500 rpm memiliki kemampaun penurunan laju degradasi kapasitas baterai yang lebih baik dibandingkan mode lainnya. Selain itu, pada pembebanan kecepatan 50 km/jam, efektifitas mode hybrid dalam memperlambat penuan baterai lebih baik dibandingkan mode lainnya, peningkatan umurnya dapat mencapai 100% atau dua kali lipat dibandingkan dengan mode Hybrid full electric. ================================================================================================ Hybrid vehicles are one of the alternative vehicles that can reduce fuel usage and emission problems in the world. Hybrid vehicles combine two or more sources of propulsion energy, generally a combustion engine and an electric motor. The battery as a medium of energy storage of the electric motor, will through a charge/discharge phase along its life cycle. This reversible process can reduce the maximum capacity of the battery, this phenomenon is also known as the battery aging. Factors that greatly affect the aging of battery cells include depth of discharge (DOD), C-rate (current rate index value), and temperature. Therefore, the purpose of this study was to determine battery aging due to charging and discharging cycles with several variations of driving mode/energy management system (EMS) and to find out the most optimal driving mode for PHEV ITS. In this study, the development of a plug-in hybrid electric vehicle (PHEV) ITS with series hybrid model was carried out. The research was conducted using experimental methods to determine the actual condition of the battery in the PHEV ITS car and simulations to predict battery life. Experiments were carried out on a waterbrake chassis dynotest. With three variations of speed loading, that is 17 km/hour, 30 km/hour, and 50 km/hour. From the test, the change of current rate, voltage, SOC, and temperature every 1 minute was obtained. The data recorded in the experiment were used as input parameters for simulations using the MATLAB Simulink software. The current rate will be used as a current profile acting on the battery, voltage and SOC will be used to determine the characteristics of the battery which is input into the generic battery model block in MATLAB Simulink, and the temperature will be calculated as heat generation on the battery. The experiment result shows at higher speed state means a higher battery discharge current rate, and is accompanied by a faster increase in battery temperature. From the measurement of changes in battery cell temperature, it can be seen that the thermal resistance of the battery is 0.127 C/W with a thermal time constant of 7224.12 s. The simulation results of battery aging in MATLAB Simulink show the rate of battery capacity decreases against the battery cycles by taking into account the current rate (C-Rate), temperature, and depth of discharge (DOD). The result is that the usage of the engine-generator in the PHEV with 60% SOC hybrid mode at 7500 rpm has better impact than the other modes to reduce the degradation rate of battery capacity. In addition, at a loading speed of 50 km / h, the effectiveness of the hybrid mode in slowing battery aging is better than other modes, the increase in life can reach 100% or two times compared to the full electric Hybrid mode.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: aging baterai, baterai, cycle life, PHEV. battery, battery aging
Subjects: T Technology > T Technology (General) > T57.5 Data Processing
T Technology > T Technology (General) > T57.62 Simulation
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc.
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL221.5 Hybrid Vehicles. Hybrid cars
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: M Naufal Aditya Putra
Date Deposited: 16 Feb 2022 05:18
Last Modified: 16 Feb 2022 05:18
URI: https://repository.its.ac.id/id/eprint/94146

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