Fengxian Wang

Fengxian Wang

Doctoral student in HEBUT

Talks and presentations

Research on the Electromagnetic Energy Flow and Coupling Characteristics of Wireless Power Transfer Systems Based on Poynting’s Theorem

December 07, 2022

Presentation, The 10th Academic Forum on Frontiers in Electrotechnology (FAFEE 2022), Wuhan, Hubei Province, China

This study addresses the challenges in modeling and understanding electromagnetic energy transformation in wireless power transfer systems, proposing a reduced-order model based on Poynting’s theorem to explore energy coupling in the near-field, emphasizing the synergistic role of inductive and capacitive coupling for system performance, and providing theoretical and experimental insights for the design of high-density electromagnetic coupling devices, with the aim of enhancing wireless power transfer capabilities over large air gaps and in various applications.

Near Field Regulation Method of Electric Field Coupling and Magnetic Field Coupling

October 09, 2022

Presentation, The 20th Biennial Conference on Electromagnetic Field Computing (CEFC 2022), Denver, Colorado

This study elucidates the energy transmission mechanism and Poynting vector distribution in wireless power transfer systems, explores coil inductance and capacitance effects, and experimentally verifies the regulation of energy transmission through theoretical calculations, while highlighting the importance of electric field coupling in high-frequency environments and the dual role of magnetic and electric field couplings in energy transfer, culminating in a frequency-based control method to optimize the system’s performance and efficiency.

Analysis of forces on the coupler of a wireless power transfer system under typical faults

July 22, 2019

Presentation, The 2019 National Academic Conference on Theory and New Technologies in Electrotechnics (CTATEE 2019), Zhangjiakou, Hebei Province, China

Typical faults in wireless power transfer systems, such as grounding and disconnection issues, can cause significant current surges and electromagnetic force increases, necessitating consideration of the magnetic shielding structure’s force distribution to maintain stability, with the system stabilizing after about forty fault cycles and the multi-slot structure’s design affecting the electromagnetic stress distribution.