A HIGH-FIDELITY SIMULINK MODEL FOR NEXT-GENERATION EV CHARGING INFRASTRUCTUREPages 81-97 Abstract
The global transition to electric mobility demands advanced charging infrastructure capable of delivering high efficiency, superior power quality, and intelligent battery management while maintaining grid stability and thermal safety. Despite substantial progress in individual charger subsystems, the literature reveals a persistent gap in integrated modeling frameworks that capture the complex interdependencies between power electronics, control systems, battery dynamics, and thermal behavior, limiting system-level performance optimization. This research addresses this gap through the development and validation of a comprehensive high-fidelity MATLAB/Simulink model of a 50 kW two-stage electric vehicle charging system, integrating a three-phase active rectifier with dq-frame current regulation, an LLC resonant converter with frequency-modulated CC-CV control, a second-order Thevenin battery model, and a Cauer-type thermal network. The simulation results demonstrate that the proposed system achieves 1.92% current total harmonic distortion, 0.99 power factor, 94.3% peak efficiency, and 36-minute 20-80% state-of-charge charging time, meeting or exceeding IEEE 519 requirements. Furthermore, the integrated analysis reveals previously underappreciated system interactions including nonlinear coupling between DC-link ripple and LLC soft-switching margin, efficiency trajectory dynamics during charging cycles, and electro-thermal coupling affecting transition timing. This work establishes a validated virtual prototyping platform supporting design iteration and performance prediction for next-generation EV charging infrastructure, with implications for advancing reliable and grid-friendly charging solutions essential to sustainable transportation ecosystems.
Keywords:
Electric Vehicle (EV) Charger,
High-Fidelity Modeling,
Pulse Width Modulation (PWM),
Closed-Loop Control,
Battery Management System (BMS),
DC-DC Converter,
LLC Resonant Converter,
Fast Charging,
Vehicle-to-Grid (V2G),
Multi-Domain Simulation,
Constant Current-Constant Voltage (CC-CV) Charging,
Dq-Frame Control.
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Asif Eakball Emon 
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