Muhammad Ridzuan Razali, Jafferi Jamaludin, Ahmad Shuhaimi Abu Bakar, Fauzan Ismail, Radin Za'im, Krismadinata
As electric vehicles (EVs) continue to gain pace internationally, the demand for e±cient, compact and high-power charging options has grown. While fast charging is largely performed by o®-board DC chargers, the growth of battery capacities and customer expectations is prompting increasing interest in high-performance on-board chargers (OBCs). This paper presents a complete examination of gallium nitride (GaN)-based bidirectional OBCs running at 400 and 800 V, which are essential voltage levels in recent EV platforms. Various GaN-based power conversion topologies are examined in terms of conduction and switching losses, power density, soft-switching capabilities, thermal management, electromagnetic interference (EMI), power quality and system reliability. This paper also addresses the availability and growth of commercial GaN power modules, progress in GaN device technology and alignment with important industry standards and application-specific criteria. By identifying gaps and new research possibilities, this analysis seeks to enable the design of next-generation OBCs that boost system e±ciency, minimize charging time and satisfy the expanding demands of the EV ecosystem. © World Scientific Publishing Company.
Higher Institution's Centre of Excellence (HICoE), Universiti Malaya Power Energy Dedicated Advanced Centre (UMPEDAC), Level 4, Wisma R&D, Jalan Pantai Baharu, Kuala Lumpur, 59990, Malaysia; Centre of Energy and Power Electronics Research (CEPER), Universitas Negeri Padang, Jalan Prof. Dr. Hamka, Air Tawar Sumatera Barat, Padang, 25131, Indonesia; Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia; Faculty of Engineering, Institut Teknologi Padang, Jln. Gajah Mada Kandis, Kp. Olo, Kec. Nanggalo, Kota, Sumatera Barat, Padang, 25143, Indonesia; Power Electronics Laboratory, Microelectronics Group, MIMOS Berhad, MRANTI Technology Park, Kuala Lumpur, Bukit Jalil, 57000, Malaysia; Centre of Energy and Power Electronics Research (CEPER), Universitas Negeri Padang, Jalan Prof. Dr. Hamka, Air Tawar, Sumatera Barat, Padang, 21531, Indonesia
