Advanced Magnetic Coupling Resonance Model Optimization for Enhanced Wireless Power Transfer

To address the demand for improved electrical performance parameters in the field of magnetically coupled resonant wireless power transfer (MCR-WPT), this paper conducts an in-depth theoretical simulation and validation of key processes, including electrical signal isolation, inversion, phase detection, and rectification filtering. This study proposes and verifies the impact of transmitter and receiver coil structural parameters on transmission performance, leading to an optimized design. Additionally, a fully digital phase-locked loop (PLL) is implemented to achieve the full-band frequency locking and tracking of wireless power oscillation transmission, ensuring continuous resonance during power transfer for maximum efficiency. Through theoretical simulations and experimental validation, results confirm that under optimized coil structures and frequency-locking technology, transmission efficiency can be improved by up to 13% compared to conventional methods, with an increase of 8 W in transmitted power. The optimized system has demonstrated long-term operational stability and reliability, providing valuable insights for advancing applications in the field.