DESIGN AND ANALYSIS OF A STATIONARY WIRELESS CHARGING SYSTEM FOR ELECTRIC VEHICLES BASED ON MAGNETIC RESONANCE COUPLING METHOD

• Main Author: Wahyu Ramanda, Lanang
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86830
• Institution: Institut Teknologi Bandung

This study develops a wireless power transfer (WPT) system based on magnetic resonance coupling for electric vehicles (EVs) at public charging stations (SPKLU). The system addresses the limitations of conductive charging, such as cable wear, short-circuit risks, and user inconvenience. Utilizing a standard resonant frequency of 85 kHz and a Series–Series (SS) compensation topology, the system is designed to maintain high efficiency under various operational conditions. Combined simulations using Ansys Maxwell and MATLAB Simulink evaluate the system’s performance based on power transfer efficiency (%PTE) in both aligned and misaligned coil scenarios. Simulation results show a maximum efficiency of 97.50% under aligned conditions (k = 0.95) and an efficiency of 81.77% under misalignment (k = 0.4), meeting SAE J2954 standards.. A case study using the Hyundai Ioniq 5 serves as a design reference, featuring a circular pad with a 30 cm diameter, 20 turns, ferrite core material (relative permeability of 2400), and ferrite shielding material (relative permeability of 1000), which reduces magnetic field leakage by up to 59.45%. Further analysis highlights the system’s efficiency sensitivity to coil distance, orientation, and misalignment. Additionally, this study recommends design adjustments for other EV types, including modifications to pad geometry, shielding materials, and coil configurations to ensure compatibility and optimal efficiency. This research contributes significantly to accelerating EV adoption in Indonesia by developing reliable, efficient, and environmentally friendly SPKLU infrastructure based on WPT technology.