Rancang Bangun Sistem Charging Baterai Kendaraan Listrik Dengan Sumber Energi Tenaga Surya Di Surabaya

Dwiyantara, Muhammad Yahya (2025) Rancang Bangun Sistem Charging Baterai Kendaraan Listrik Dengan Sumber Energi Tenaga Surya Di Surabaya. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini merancang dan menguji sistem pengisian baterai kendaraan listrik berbasis tenaga surya dengan kontrol fuzzy logic close loop untuk menerapkan metode Constant Current–Constant Voltage (CC–CV). Sistem terdiri dari panel surya, DC-DC converter, baterai VRLA 48V 12Ah, sensor arus dan tegangan, serta mikrokontroler sebagai pengendali utama. Nilai setpoint tegangan (Vset) dan arus (Iset) ditentukan berdasarkan karakteristik baterai agar pengisian berjalan stabil dan aman. Hasil pengujian menunjukkan bahwa pada SoC < 80%, sistem mempertahankan arus pengisian mendekati 3,5 A dengan duty cycle sekitar 75% (fase CC), sedangkan saat SoC > 80%, sistem beralih ke fase CV dengan tegangan output mendekati 56 V dan duty cycle menurun bertahap. Deviasi Vout dan Iout terhadap setpoint tercatat kecil, masing-masing ± 0,6 V dan ± 0,35 A. Simulasi menunjukkan respon serupa, memperkuat validitas sistem. Efisiensi sistem tercatat bervariasi terhadap waktu: 61,71% (07.00–11.45 WIB), 33,05% (09.00–14.30 WIB), dan 37,59% (11.00–16.00 WIB). Penurunan efisiensi di siang hari disebabkan oleh fluktuasi suhu panel dan intensitas cahaya. Ini menunjukkan bahwa kontrol fuzzy close loop efektif menjaga kestabilan dan efisiensi sistem pengisian berbasis energi surya.
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This study designs and tests a solar-powered electric vehicle battery charging system using a fuzzy logic close-loop controller to implement the Constant Current–Constant Voltage (CC–CV) method. The system consists of a solar panel, DC-DC converter, 48V 12Ah VRLA battery, current and voltage sensors, and a microcontroller as the main controller. The voltage (Vset) and current (Iset) setpoints are determined based on the battery’s charging characteristics to ensure stable and safe operation. Testing results show that when SoC < 80%, the system maintains a charging current close to 3.5 A with a duty cycle of around 75% (CC phase). When SoC > 80%, the system transitions to the CV phase, keeping the output voltage near 56 V while gradually reducing the duty cycle. The deviations of Vout and Iout from their setpoints are minimal, ± 0.6 V and ± 0.35 A respectively. Simulation results reflect similar trends, reinforcing the system’s validity. Charging efficiency varies with time: 61.71% (07:00–11:45), 33.05% (09:00–14:30), and 37.59% (11:00–16:00), with reduced efficiency during midday due to panel temperature and sunlight fluctuations. These findings confirm that the fuzzy logic close loop control effectively maintains charging stability and energy efficiency in solar-based systems

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Charging System, Photovoltaic, Fuzzy Logic, close loop, Constant Current - Constant Voltage
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1087 Photovoltaic power generation T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2943 Battery chargers. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2945 Lead-acid batteries. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3070 Automatic control T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK351 Electric measurements.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30101-(S2) Master Thesis
Depositing User:	Muhammad Yahya Dwiyantara
Date Deposited:	06 Aug 2025 03:11
Last Modified:	06 Aug 2025 04:05
URI:	http://repository.its.ac.id/id/eprint/127667

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