TITLE:
Conceptual Design and Development of Portable EV Charger
AUTHORS:
Muhammad Syahir Sabri, Zulhani Rasin, Mohd Zulkifli Ramli, Maaspaliza Azri
KEYWORDS:
Bidirectional Dual Active Bridge Converter, DC Fast Charging, Portable EV Charger
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.13 No.10,
October
30,
2025
ABSTRACT: As more people turn to electric vehicles (EVs), the need for smarter, more adaptable charging solutions becomes clear. Conventional chargers often come with frustrating limitations with fixed locations, lack flexibility, and do not always fit the dynamic lifestyles of EV owners. This study introduces a portable battery EV charger designed to tackle these issues head-on. Traditional charging stations can be bulky, inefficient, and inconvenient in many scenarios. In contrast, the portable charger presented here is compact, lightweight, and built for high-efficiency charging. The methodology involved a detailed design process that included the specification of a battery pack rated at 799.2 V 8 Ah for simulation and 72 V 6 Ah for hardware implementation. A bidirectional dual active bridge (DAB) converter is applied as the power electronics horsepower to realize the energy transfer with current control capability. Simulation is conducted using MATLAB Simulink software to evaluate the system’s behaviour in terms of energy transfer and current control under varying conditions and experimental results validate the feasibility and practicality of the design. The hardware implementation also incorporated safety measures such as fuses, thermal management, and automatic shutdown features to ensure reliable operation. The results from both simulation and experiment fulfil the expectation, including current control and consistent energy transfer from the battery pack to the targeted EV battery. The findings highlight how this portable battery EV charger can boost EV mobility, improve access to charging infrastructure, and make EV ownership more convenient, addressing the challenges posed by traditional charging methods.