In the bipolar (multiple) receiver inductive power transfer (IPT) system, the delivered power sharply drops with detuning due to the coupling between the two receiver coils. As a remedy to this problem, a new self-decoupled model of bipolar receiver by adding decoupling coils (sub-coils) to the receiver coils is proposed. First, the IPT system topology with a bipolar receiver has been analysed. Then, the self-decoupled model of bipolar receiver has been built. Furthermore, a quantitative calculation model of decoupling coils has been given. Finally, a series of IPT system comparison experiments for a single receiver, a bipolar receiver, and the decoupled bipolar receivers by using overlap, and the presented method are carried out separately. The results show that the presented self-decoupled model of bipolar receiver can effectively overcome the electromagnetic coupling between the dual receiver coils on the system resonance. The results further verified that the presented model is also suitable for the case with core plates.

中文翻译：

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IPT中新的双极接收机自解耦模型研究

在双极（多个）接收器感应功率传输（IPT）系统中，由于两个接收器线圈之间的耦合，所传递的功率随着失谐而急剧下降。为了解决这个问题，提出了一种通过在接收器线圈上增加去耦线圈（子线圈）的新的双极接收器自解耦模型。首先，已经分析了具有双极接收器的IPT系统拓扑。然后，建立了双极接收器的自解耦模型。此外，给出了去耦线圈的定量计算模型。最后，针对单个接收器，双极性接收器和解耦双极性接收器通过重叠进行了一系列IPT系统比较实验，并分别进行了所提出的方法。结果表明，所提出的双极接收器自解耦模型可以有效克服双接收器线圈之间的电磁耦合对系统的共振。结果进一步验证了所提出的模型也适用于带芯板的情况。