In the realm of wireless power transfer, considering misalignment between transmitting and receiving coils is imperative. Traditional wireless power transfer systems experience a significant decrease in output power when the coupling coefficient fluctuates. This paper proposes a reconfigurable dual-frequency series–series (SS) topology with primary side inductive detuned and secondary side with full resonance. The proposed topology operates at two frequencies and can be transformed into two different SS topologies at each frequency. This allows the system to switch between the two SS topologies when a large misalignment occurs, thereby achieving a more stable output power level. Furthermore, a comprehensive parameter design flowchart for the proposed topology is presented, and the parameters for a 400 W prototype are designed and implemented. The prototype is tested to evaluate the performance of the topology. The frequency response analysis of the prototype validates the effectiveness of the parameter design method. The test results show that the topology can maintain output power fluctuations within 23% of the maximum power for misalignment ranging from k = 0.13 to k = 0.46. Additionally, the system maintains an efficiency of at least 80% across the entire output power flat range, peaking at a maximum efficiency of 91%.

中文翻译：

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可重构失谐双频串联补偿 WPT 系统，具有高抗失准容差

在无线电力传输领域，必须考虑发射线圈和接收线圈之间的错位。当耦合系数波动时，传统的无线电力传输系统的输出功率会显着下降。本文提出了一种可重构双频串联（SS）拓扑，初级侧电感失谐，次级侧全谐振。所提出的拓扑在两个频率下运行，并且可以在每个频率下转换为两种不同的 SS 拓扑。这允许系统在发生较大失准时在两种 SS 拓扑之间切换，从而实现更稳定的输出功率水平。此外，还提出了所提出的拓扑的综合参数设计流程图，并设计和实现了 400 W 原型的参数。对原型进行测试以评估拓扑的性能。样机的频率响应分析验证了参数设计方法的有效性。测试结果表明，对于k  = 0.13 至k  = 0.46 的失准范围，该拓扑可以将输出功率波动保持在最大功率的 23% 以内。此外，该系统在整个输出功率平坦范围内保持至少 80% 的效率，峰值最高效率为 91%。