基于互感估计定位方案的动态无线电力传输系统恒定输出电压切换策略

In this article, we propose a novel switching strategy for maintaining constant output voltage in dynamic wireless power transfer (DWPT) systems, leveraging a positioning scheme based on mutual inductance estimation. First, we enhance the secondary coil positioning method by improving mutual inductance estimation to support various load types. Furthermore, a practical secondary coil positioning scheme is introduced to address real-world challenges in DWPT systems, factoring in parameter fluctuations and time delays. Following this, steady-state and transient models of the primary coil switching process are derived to thoroughly assess the switching dynamics and identify potential safety risks. Based on these insights, we develop a primary coil switching strategy that guarantees both system safety and consistent output voltage while facilitating practical implementation. Simulation and experimental results validate the design objectives of the secondary coil positioning scheme and primary coil switching strategy. Furthermore, we analyze the mutual interactions between the positioning scheme and switching strategy, confirming their compatibility and effectiveness under simultaneous operation.