The letter reveals that for a given operating frequency, infinite amount of compensation capacitor pairs exists, yielding load independent voltage gain of a typical series-series compensated resonant inductive wireless power transfer link (WPTL). Closed-form analytical expression is derived, linking the values of compensating capacitors with the desired load independent voltage gain based on given coil inductances, coupling coefficient and operating frequency. Feasible range of achievable voltage gains is shown to be bounded by the value of coupling coefficient based on a novel 4-parameter generalized loosely coupled transformer model. Experimental results are given to validate the presented findings.

中文翻译：

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用于在固定频率运行的串联补偿电感 WPT 链路中实现任意负载独立电压增益的补偿电容器尺寸

这封信表明，对于给定的工作频率，存在无限数量的补偿电容器对，从而产生典型串联-串联补偿谐振感应无线电力传输链路 (WPTL) 的负载独立电压增益。根据给定的线圈电感、耦合系数和工作频率，导出了封闭形式的分析表达式，将补偿电容器的值与所需的独立于负载的电压增益联系起来。显示可实现电压增益的可行范围受基于新型 4 参数广义松耦合变压器模型的耦合系数值的限制。给出了实验结果以验证所提出的发现。