Variable parameter (VP) or variable frequency (VF) methods for load-independent output current or output voltage in inductive power transfer (IPT) systems have been widely studied. This study proposes an IPT system based on series-series compensation topology with VP and VF methods to achieve constant-current–constant-voltage (CC–CV) charging for electric bicycles (EBs). The proposed IPT system can operate in CC and CV modes regardless of load conditions at two different operating frequencies with corresponding values of compensation capacitors. The rating current/voltage of the proposed method is configurable by altering the compensation capacitor and operational frequency. Therefore, one charging stand can be shared by various EBs to save the space and to cut the overall cost. Only one capacitor is needed for one EB specification. The proposed IPT system can achieve zero-voltage switching under all load conditions. An experimental prototype with two ratings of 48 V/3A and 60 V/4A is built to verify the feasibility of the proposed method. The experimental results demonstrate the feasibility of the proposed method.

中文翻译：

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可配置充电电流和充电电压的基于可变参数和基于频率的IPT充电系统

对于感应功率传输（IPT）系统中与负载无关的输出电流或输出电压的可变参数（VP）或可变频率（VF）方法，已经进行了广泛的研究。这项研究提出了一种基于串联补偿拓扑的VPT和VP和VF方法的IPT系统，以实现电动自行车（EB）的恒流-恒压（CC-CV）充电。所提出的IPT系统可以在CC和CV模式下运行，而不管负载条件如何在两个不同的工作频率下具有相应的补偿电容器值。该方法的额定电流/电压可通过改变补偿电容器和工作频率来配置。因此，各种EB可以共享一个充电座，以节省空间并降低总体成本。一种EB规格仅需要一个电容器。提出的IPT系统可以在所有负载条件下实现零电压开关。建立了具有两个额定值48 V / 3A和60 V / 4A的实验原型，以验证该方法的可行性。实验结果证明了该方法的可行性。