A new inductive power transfer using integrated low loss dielectric technique on metamaterial

• Main Author: Yusri, Muhammad Sukriyllah
• Format: Thesis
• Language: English; English
• Published: 2025
• Subjects: T Technology; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utem.edu.my/id/eprint/29347/

In recent times, there has been a significant surge in innovation and advancement in the field of wireless power transfer (WPT), leading to an increased demand for WPT systems that offer high power transfer efficiency (PTE) and longer transmission lengths for end users. As a result, there is an increasing need for enhanced PTE and extended transmission distance in WPT systems, to meet the needs of consumers. However, currently available WPT systems have limited PTE and transmission ranges due to their use of inductive coupling. As the distance between the transmitter and receiver coils increases, the PTE undergoes a substantial decrease when using this approach. Therefore, this work proposes a concept for inductive WPT that utilizes metamaterials (MTMs) to enhance PTE by controlling the refraction of magnetic fields. Integration MTM between the transmitting (TX) and receiving (RX) coils can improve the effectiveness and distance coverage of WPT. MTMs have qualities such as evanescent wave amplification and negative refractive index, which show potential for improving PTE. The proposed MTM structures exhibit a negative permeability characteristic, allowing them to redirect the flux towards the RX coil area. This redirection results in an increase in both the flux density and the generated current. The PTEs shows amplification with implementation of MTM. When used at a distance of 40 mm, MTM A, MTM B, and MTM C all show a notable enhancement in PTE. Specifically, there is a 32.95% increase with MTM A, 32.49% increase with MTM B, and another 20% increase with MTM C.