In this article the model for the study of wireless power transfer to several receivers is presented. The problem of determining the ideal loads to obtain the maximum transfer of energy in a connection between a transmitter and several receivers was considered and solved by applying the maximum power transfer theorem for N ports. This condition is derived from the circuit analysis and discussed together with the respective efficiency of the Wireless Power Transfer (WPT) system (). In sequence, it is shown that a WPT system with multiple coils without loss of energy in the two communication circuits presents, from the maximum transfer of power and efficiency point of view, performance similar to that of a 2 coil WPT system. Simple analytical expressions for the load impedances were validated through experiments and circuit simulations. These expressions are also valid in the case of mutual coupling between receivers.

中文翻译：

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多接收器无线电力传输系统的分析和建模


在本文中，提出了研究向多个接收器进行无线电力传输的模型。通过应用 N 端口的最大功率传输定理，考虑并解决了确定理想负载以获得发射器和多个接收器之间的连接中的最大能量传输的问题。该条件是从电路分析中得出的，并与无线电力传输（WPT）系统的各自效率一起讨论（）。接下来，结果表明，从最大功率传输和效率的角度来看，在两个通信电路中没有能量损失的具有多个线圈的 WPT 系统呈现出与 2 线圈 WPT 系统类似的性能。通过实验和电路模拟验证了负载阻抗的简单解析表达式。这些表达式在接收器之间相互耦合的情况下也有效。